Page last updated: 2024-12-07

ezogabine

Description Research Excerpts Clinical Trials Roles Classes Pathways Study Profile Bioassays Occurs in Manufacturing Related Drugs Related Conditions Protein Interactions Research Growth Market Indicators

Description

Ezogabine is an anticonvulsant medication used to treat partial-onset seizures in adults. It is thought to work by enhancing the activity of a potassium channel in the brain, which helps to regulate the electrical activity of neurons. Ezogabine was first synthesized in the 1980s and was initially studied for its potential to treat a variety of neurological disorders. However, it was eventually approved specifically for the treatment of partial-onset seizures. Research on ezogabine continues to focus on its potential benefits and risks, as well as on its mechanism of action. It is also being investigated for its potential use in treating other neurological disorders, such as neuropathic pain.'

ezogabine: structure in first source [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

ezogabine : A substituted aniline that is benzene-1,2,4-triamine bearing ethoxycarbonyl and 4-fluorobenzyl substituents at positions N-1 and N-4 respectively. An anticonvulsant used to treat seizures associated with epilepsy in adults. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Cross-References

ID SourceID
PubMed CID121892
CHEMBL ID41355
CHEBI ID68584
SCHEMBL ID20835
MeSH IDM0266905

Synonyms (94)

Synonym
AC-6908
gtpl2601
150812-12-7
retigabine
n-(2-amino-4-(4-fluorobenzylamino)-phenyl) carbamic acid ethyl ester
way-143841
n03ax21
add-230001
potiga
trobalt
ezogabine
aw21-360
gw-582892x
gke-841
ethyl (2-amino-4-(((4-fluorophenyl)methyl)amino)phenyl)carbamate
ethyl 2-amino-4-((p-fluorobenzyl)amino)carbanilate
d 20443
d 23129
n-(2-amino-4-(4-fluorobenzylamino)phenyl)carbamic acid ethyl ester
carbamic acid, (2-amino-4-(((4-fluorophenyl)methyl)amino)phenyl)-, ethyl ester
[2-amino-4-[[(4-fluorophenyl)methyl]amino]phenyl]-carbamate
d-23129
ZINC00016154
[2-amino-4-(4-fluoro-benzylamino)-phenyl]-carbamic acid ethyl ester
n-(2-amino-4-(4-fluorobenzylamino)-phenyl)carbamic acid ethylester
bdbm50143558
awd-21360
chebi:68584 ,
gw582892x
awd21-360
CHEMBL41355 ,
ethyl [2-amino-4-[[(4-fluorophenyl)methyl]amino]phenyl]carbamate
ethyl n-[2-amino-4-[(4-fluorophenyl)methylamino]phenyl]carbamate
n-[2-amino-4-[(4-fluorophenyl)methylamino]phenyl]carbamic acid ethyl ester
A809076
ethyl n-[2-azanyl-4-[(4-fluorophenyl)methylamino]phenyl]carbamate
ezogabine (usan)
retigabine (inn)
D09569
potiga (tn)
retigabine [inn]
potiva
12g01i6bbu ,
ezogabine [usan]
dea no. 2779
way 143841
gw 582892x
gki 841
hsdb 8171
unii-12g01i6bbu
S4733
HY-15471
CS-0990
retigabine,d2312, d-23129
BCP0726000089
FT-0601527
NCGC00346739-01
retigabine [who-dd]
ezogabine [vandf]
n-[2-amino-4-(4-fluorobenzylamino)-phenyl]carbamic acid ethyl ester
retigabine [ema epar]
ezogabine [mi]
carbamic acid, (2-amino-4-(((4-fluoro-phenyl)methyl)amino)phenyl)-ethyl ester
retigabine [mart.]
ezogabine [orange book]
ethyl {2-amino-4-[(4-fluorobenzyl)amino]phenyl}carbamate
AKOS015895311
RTG ,
DB04953
SCHEMBL20835
KE-0201 ,
PCOBBVZJEWWZFR-UHFFFAOYSA-N
2-amino-4-(4-fluorbenzylamino)-1-ethoxycarbonylaminobenzene
Q-101418
ethyl (2-amino-4-((4-fluorobenzyl)amino)phenyl)carbamate
DTXSID40164615
retigabine, analytical standard
ethyl n-(2-amino-4-{[(4-fluorophenyl)methyl]amino}phenyl)carbamate
FBX ,
retigabine, >=98% (hplc)
NCGC00346739-06
ethyl 2-amino-4-(4-fluorobenzylamino)phenylcarbamate
retigabin
BCP04194
retigabine (1.0 mg/ml in acetonitrile)
n-(2-amino-4-[fluorobenzylamino]-phenyl) carbamic acid|d-23129
EX-A2203
Q2146170
AMY18466
HMS3885L20
HMS3748I09
CCG-267503
NCGC00346739-05
ae3 - newer anti-epileptic drug mixtures 3

Research Excerpts

Overview

Ezogabine (retigabine) is a novel antiepileptic agent which primarily acts to stabilize neuronal potassium-gated ion channels. It has been approved as adjunctive treatment for partial-onset seizures in adults with epilepsy.

ExcerptReferenceRelevance
"Ezogabine (EZG) is a potassium-channel opener that has been approved as adjunctive treatment for partial-onset seizures in adults with epilepsy. "( The effect of ezogabine on the pharmacokinetics of an oral contraceptive agent.
Buraglio, M; Crean, CS; Tompson, DJ, 2013
)
2.19
"Ezogabine (retigabine) is a novel antiepileptic agent which primarily acts to stabilize neuronal potassium-gated ion channels. "( Ezogabine: a novel antiepileptic as adjunctive therapy for partial onset seizures.
Owen, RT, 2010
)
3.25
"Ezogabine is a newly approved anticonvulsant for adjunctive therapy in partial-onset seizures in adults with a novel mechanism of action, activating low-threshold voltage-gated potassium channels. "( Ezogabine (retigabine) and its role in the treatment of partial-onset seizures: a review.
Splinter, MY, 2012
)
3.26
"Ezogabine (D-23129) is a recently approved antiepileptic drug approved by USFDA for adjunctive therapy of partial onset seizures."( Ezogabine: development and role in the management of epileptic seizures.
Kumar, M; Kumar, R; Verma, A, 2013
)
2.55

Effects

ExcerptReferenceRelevance
"Ezogabine has reported dose-dependent efficacy at doses of 600, 900, and 1200 mg/d."( Ezogabine (retigabine) and its role in the treatment of partial-onset seizures: a review.
Splinter, MY, 2012
)
2.54

Toxicity

ExcerptReferenceRelevance
" Treatment discontinuations due to adverse events (AEs) were more likely with EZG (RTG) than with placebo (placebo, 8%; 600 mg, 17%, 900 mg, 26%)."( Efficacy and safety of adjunctive ezogabine (retigabine) in refractory partial epilepsy.
Brodie, MJ; Elger, C; Gil-Nagel, A; Hall, S; Lerche, H; Mansbach, H; Nohria, V; Shin, P, 2010
)
0.64
" Consequently, the adverse event (AE) profile of RTG/EZG includes a potential risk of effects on the urinary system."( The urinary safety profile and secondary renal effects of retigabine (ezogabine): a first-in-class antiepileptic drug that targets KCNQ (K(v)7) potassium channels.
Brickel, N; DeRossett, S; Gandhi, P; Hammond, J; VanLandingham, K, 2012
)
0.61
" In the network meta-analysis, RTG was not found to be different from the other AEDs for responder rate (maintenance period), seizure freedom (maintenance period and double-blind period), withdrawals due to adverse events, and incidences of ataxia, dizziness, fatigue and nausea."( The efficacy and safety of retigabine and other adjunctive treatments for refractory partial epilepsy: a systematic review and indirect comparison.
Cooper, J; Duffy, S; Glanville, J; Hugel, P; Lane, PW; Martyn-St James, M; McCool, R, 2012
)
0.38
" Careful monitoring of drug interactions and adverse reactions is necessary."( Ezogabine: an evaluation of its efficacy and safety as adjunctive therapy for partial-onset seizures in adults.
Welty, TE; Yamada, M, 2012
)
1.82
" Treatments were generally tolerated, with no serious adverse events or discontinuations owing to adverse events."( The effects of ethanol on the pharmacokinetics, pharmacodynamics, safety, and tolerability of ezogabine (retigabine).
Crean, CS; Tompson, DJ, 2013
)
0.61
"Central nervous system effects are predominant within the adverse event profiles of both ezogabine and perampanel."( Safety profile of two novel antiepileptic agents approved for the treatment of refractory partial seizures: ezogabine (retigabine) and perampanel.
Burke, RA; Faulkner, MA, 2013
)
0.82
" Discontinuation rates due to treatment-emergent adverse events (TEAEs) were numerically higher in the fast- (10/23) and medium- (7/22) titration groups than in the slow-titration group (3/23) but statistical significance was achieved only for the high-titration group compared with the low-titration group (p=0."( Safety and tolerability of different titration rates of retigabine (ezogabine) in patients with partial-onset seizures.
Biton, V; Brodie, MJ; Derossett, SE; Gil-Nagel, A; Nohria, V, 2013
)
0.63
" Safety assessments included adverse event (AE) monitoring, clinical laboratory evaluations, electrocardiograms, and physical and neurologic examinations."( A novel design for a dose finding, safety, and drug interaction study of an antiepileptic drug (retigabine) in early clinical development.
Biton, V; DeRossett, S; Nohria, V; Partiot, A; Porter, RJ; Rosenfeld, WE; Sachdeo, R; Tompson, D, 2014
)
0.4
" The incidence of this significant adverse effect requires further investigation."( Blue-gray mucocutaneous discoloration: a new adverse effect of ezogabine.
Bergman, R; Didkovsky, E; Feuerman, H; Garin Shkolnik, T; Hodak, E; Kaplan, I; Pavlovsky, L, 2014
)
0.64
" Treatment-emergent adverse events occurred in 82% (CBZ/OXC), 76% (LTG), 73% (LEV), and 67% (VPA) of patients; most were of mild-to-moderate intensity."( Efficacy and safety of ezogabine/retigabine as adjunctive therapy to specified single antiepileptic medications in an open-label study of adults with partial-onset seizures.
Brandt, C; Daniluk, J; DeRossett, S; Edwards, S; Lerche, H; Lotay, N, 2015
)
0.73
" Safety assessments included monitoring treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs)."( Safety of retigabine in adults with partial-onset seizures after long-term exposure: focus on unexpected ophthalmological and dermatological events.
Boll, MC; Brickel, N; Cooper, J; Daniluk, J; De'Ath, J; Hewett, K; Joshi, K; McDonald, S; Rayner, K; Tiamkao, S; Vorobyeva, O, 2020
)
0.56
" In addition, comprehensive eye examination identified a new adverse reaction of acquired vitelliform maculopathy in a limited number of patients."( Safety of retigabine in adults with partial-onset seizures after long-term exposure: focus on unexpected ophthalmological and dermatological events.
Boll, MC; Brickel, N; Cooper, J; Daniluk, J; De'Ath, J; Hewett, K; Joshi, K; McDonald, S; Rayner, K; Tiamkao, S; Vorobyeva, O, 2020
)
0.56

Pharmacokinetics

ExcerptReferenceRelevance
" Pharmacokinetic parameters were compared between days and among dose groups."( Multiple-dose, linear, dose-proportional pharmacokinetics of retigabine in healthy volunteers.
Ferron, GM; Fruncillo, R; Getsy, J; Knebel, N; Paul, J; Richards, L; Troy, S, 2002
)
0.31
" This study was performed to evaluate potential pharmacokinetic interactions between both AEDs."( Pharmacokinetic interaction between retigabine and lamotrigine in healthy subjects.
Borlak, J; Hermann, R; Knebel, NG; Locher, M; Niebch, G; Richards, L, 2003
)
0.32
"RGB and LTG exhibit a modest pharmacokinetic interaction on each other."( Pharmacokinetic interaction between retigabine and lamotrigine in healthy subjects.
Borlak, J; Hermann, R; Knebel, NG; Locher, M; Niebch, G; Richards, L, 2003
)
0.32
"To evaluate potential pharmacokinetic interactions between phenobarbitone and retigabine, a new antiepileptic drug."( Lack of pharmacokinetic interaction between retigabine and phenobarbitone at steady-state in healthy subjects.
Ferron, GM; Parks, V; Patat, A; Rolan, P; Troy, SM, 2003
)
0.32
"There was no pharmacokinetic interaction between retigabine and phenobarbitone in healthy subjects."( Lack of pharmacokinetic interaction between retigabine and phenobarbitone at steady-state in healthy subjects.
Ferron, GM; Parks, V; Patat, A; Rolan, P; Troy, SM, 2003
)
0.32
"The goal of this study was to examine the impact of coadministration of ethanol 1 g/kg on the safety and tolerability of EZG and the consequences of coadministration on pharmacokinetic (PK) and pharmacodynamic (PD) parameters in healthy volunteers."( The effects of ethanol on the pharmacokinetics, pharmacodynamics, safety, and tolerability of ezogabine (retigabine).
Crean, CS; Tompson, DJ, 2013
)
0.61
"This manuscript summarizes the pharmacokinetic and biopharmaceutical properties of retigabine collated from published and unpublished in vitro and clinical phase I-III studies in healthy volunteers or patients with partial-onset seizures."( Clinical pharmacokinetics of retigabine/ezogabine.
Crean, CS; Tompson, DJ, 2013
)
0.66
" Thereafter, plasma concentrations decline in a mono-exponential manner, with a median half-life of 6-8 hours."( Clinical pharmacokinetics of retigabine/ezogabine.
Crean, CS; Tompson, DJ, 2013
)
0.66
" Ethinyl estradiol Cmax was 21% lower with no change in AUC."( The effect of ezogabine on the pharmacokinetics of an oral contraceptive agent.
Buraglio, M; Crean, CS; Tompson, DJ, 2013
)
0.75

Bioavailability

ExcerptReferenceRelevance
" The absolute oral bioavailability of retigabine is ~60%."( Clinical pharmacokinetics of retigabine/ezogabine.
Crean, CS; Tompson, DJ, 2013
)
0.66
" It is well absorbed from the digestive system and undergoes metabolism via glucuronidation and acetylation."( [Retigabine - a new antiepileptic drug with a different mechanism of action].
Pietrzak, B; Zwierzyńska, E, 2013
)
0.39
" Oral or intraperitoneal administration of QO58-lysine, which has improved bioavailability and a half-life of approximately 3 h in plasma, can reverse inflammatory pain in rodent animal models."( Activation of neuronal Kv7/KCNQ/M-channels by the opener QO58-lysine and its anti-nociceptive effects on inflammatory pain in rodents.
Li, G; Ma, TY; Qi, JL; Song, Y; Teng, BC; Wang, K; Zhang, F; Zhang, HL, 2016
)
0.43
"The ATP-binding cassette transporter P-glycoprotein (P-gp) is known to limit both brain penetration and oral bioavailability of many chemotherapy drugs."( A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
Ambudkar, SV; Brimacombe, KR; Chen, L; Gottesman, MM; Guha, R; Hall, MD; Klumpp-Thomas, C; Lee, OW; Lee, TD; Lusvarghi, S; Robey, RW; Shen, M; Tebase, BG, 2019
)
0.51

Dosage Studied

ExcerptRelevanceReference
" Plasma profiling and spectroscopic analysis (liquid chromatography with tandem mass spectrometry NMR) of two isolated urinary metabolites obtained after single oral dosing of 600 mg retigabine in healthy volunteers indicated that both acetylation and glucuronidation are major metabolic pathways of retigabine in humans."( Metabolism of retigabine (D-23129), a novel anticonvulsant.
Engel, J; Griesinger, C; Grunwald, C; Heinecke, K; Hempel, R; Kronbach, C; Kronbach, T; McNeilly, PJ; Schupke, H; Zimmermann, G, 1999
)
0.3
" No dosage adjustment is likely to be necessary when retigabine and phenobarbitone are coadministered to patients."( Lack of pharmacokinetic interaction between retigabine and phenobarbitone at steady-state in healthy subjects.
Ferron, GM; Parks, V; Patat, A; Rolan, P; Troy, SM, 2003
)
0.32
" Blood samples were collected up to 60 h after dosing for plasma PK of RGB and AWD21-360."( The role of Gilbert's syndrome and frequent NAT2 slow acetylation polymorphisms in the pharmacokinetics of retigabine.
Borlak, J; Erb, K; Fuhr, U; Hermann, R; Maus, J; Munzel, U; Niebch, G,
)
0.13
" The isobolographic analysis for parallel and nonparallel dose-response effects was used in the mouse maximal electroshock seizure (MES) model for evaluation of pharmacodynamic interaction."( Isobolographic characterization of interactions of retigabine with carbamazepine, lamotrigine, and valproate in the mouse maximal electroshock-induced seizure model.
Czuczwar, SJ; Luszczki, JJ; Raszewski, G; Wu, JZ, 2009
)
0.35
" Dose-response curves were obtained with increasing concentrations of the KCNQ((2-5)) selective positive modulator, retigabine or with the KCNQ((1-5)) negative modulator XE991."( Functional effects of the KCNQ modulators retigabine and XE991 in the rat urinary bladder.
Rode, F; Rønn, LC; Sheykhzade, M; Svalø, J, 2010
)
0.36
" Dosage adjustments are recommended in elderly patients and those with moderate and severe renal or moderate hepatic impairment."( Clinical pharmacokinetics of retigabine/ezogabine.
Crean, CS; Tompson, DJ, 2013
)
0.66
" The final dosing regimen attained was maintained for an additional 14 days."( A novel design for a dose finding, safety, and drug interaction study of an antiepileptic drug (retigabine) in early clinical development.
Biton, V; DeRossett, S; Nohria, V; Partiot, A; Porter, RJ; Rosenfeld, WE; Sachdeo, R; Tompson, D, 2014
)
0.4
" Likewise, information regarding the appropriate dosage of RTG with VPA, CBZ, PHT, or TPM was obtained, which permitted the subsequent pivotal trials to be performed appropriately."( A novel design for a dose finding, safety, and drug interaction study of an antiepileptic drug (retigabine) in early clinical development.
Biton, V; DeRossett, S; Nohria, V; Partiot, A; Porter, RJ; Rosenfeld, WE; Sachdeo, R; Tompson, D, 2014
)
0.4
"To assess efficacy/tolerability of ezogabine (EZG)/retigabine (RTG) in combination with specified monotherapy antiepileptic drug (AED) treatments in adults with uncontrolled partial-onset seizures using a flexible dosing regimen."( Efficacy and safety of ezogabine/retigabine as adjunctive therapy to specified single antiepileptic medications in an open-label study of adults with partial-onset seizures.
Brandt, C; Daniluk, J; DeRossett, S; Edwards, S; Lerche, H; Lotay, N, 2015
)
1
"NCT01227902 was an open-label, uncontrolled study of flexibly dosed EZG/RTG."( Efficacy and safety of ezogabine/retigabine as adjunctive therapy to specified single antiepileptic medications in an open-label study of adults with partial-onset seizures.
Brandt, C; Daniluk, J; DeRossett, S; Edwards, S; Lerche, H; Lotay, N, 2015
)
0.73
"EZG/RTG was effective as adjunctive therapy to CBZ/OXC, LTG, LEV, and VPA, using a flexible dosing regimen, in adults with partial-onset seizures; safety and tolerability were consistent with that previously observed."( Efficacy and safety of ezogabine/retigabine as adjunctive therapy to specified single antiepileptic medications in an open-label study of adults with partial-onset seizures.
Brandt, C; Daniluk, J; DeRossett, S; Edwards, S; Lerche, H; Lotay, N, 2015
)
0.73
" Unlike other drugs, repeated dosing of retigabine was necessary to induce this effect."( Profile of retigabine-induced neuronal apoptosis in the developing rat brain.
Brown, L; Forcelli, PA; Gutherz, S; Kondratyev, A; Kulick, C; Soper, C, 2016
)
0.43
"The aim of this review was to evaluate current literature for dosing recommendations for the use of antiepileptic medications in patients receiving renal replacement therapy (RRT)."( Antiepileptic dosing for critically ill adult patients receiving renal replacement therapy.
Bastin, ML; Cook, AM; Oyler, DR; Smetana, KS, 2016
)
0.43
" Micromedex® DRUGDEX as well as package inserts were used to obtain known pharmacokinetic properties and dosage adjustment recommendations in RRT if known."( Antiepileptic dosing for critically ill adult patients receiving renal replacement therapy.
Bastin, ML; Cook, AM; Oyler, DR; Smetana, KS, 2016
)
0.43
"Data regarding antiepileptic drug use in RRT are limited and mostly consist of case reports limiting our proposed dosing recommendations."( Antiepileptic dosing for critically ill adult patients receiving renal replacement therapy.
Bastin, ML; Cook, AM; Oyler, DR; Smetana, KS, 2016
)
0.43
"Additional studies are necessary before specific dosing recommendations can be made for most antiepileptic drugs in critically ill patients receiving RRT, specifically with newer agents."( Antiepileptic dosing for critically ill adult patients receiving renal replacement therapy.
Bastin, ML; Cook, AM; Oyler, DR; Smetana, KS, 2016
)
0.43
"Type I isobolographic analysis for nonparallel dose-response effects for the combination of retigabine with LCM (at the fixed-ratio of 1:1) in both the MES and chimney test in mice was performed."( Beneficial Combination of Lacosamide with Retigabine in Experimental Animals: An Isobolographic Analysis.
Adamczuk, P; Czuczwar, SJ; Florek-Luszczki, M; Kondrat-Wrobel, MW; Luszczki, JJ; Miziak, B; Wroblewska-Luczka, P; Zagaja, M; Zaluska, K, 2018
)
0.48
"Linear regression analysis revealed that retigabine had its dose-response effect line nonparallel to that of LCM in both the MES and chimney tests."( Beneficial Combination of Lacosamide with Retigabine in Experimental Animals: An Isobolographic Analysis.
Adamczuk, P; Czuczwar, SJ; Florek-Luszczki, M; Kondrat-Wrobel, MW; Luszczki, JJ; Miziak, B; Wroblewska-Luczka, P; Zagaja, M; Zaluska, K, 2018
)
0.48
" As part of a larger preclinical effort to gain a mechanistic understanding as to the origins of retinal pigment changes associated with RTG, we conducted a long-term repeat dosing study in rats."( An Investigation into Retigabine (Ezogabine) Associated Dyspigmentation in Rat Eyes by MALDI Imaging Mass Spectrometry.
Castellino, S; Groseclose, MR, 2019
)
0.79
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Occurs in Manufacturing (1 Product(s))

Product Categories

Product CategoryProducts
Vitamins & Supplements1

Products

ProductBrandCategoryCompounds Matched from IngredientsDate Retrieved
Igennus Pharmepa Complete EPA - DHA - GLA Ultra Pure rTG Wild Fish Oil Lemon -- 1000 mg - 60 SoftgelsIgennusVitamins & SupplementsVitamin E, rTG, Vitamin E, linoleic acid2024-11-29 10:47:42

Roles (2)

RoleDescription
anticonvulsantA drug used to prevent seizures or reduce their severity.
potassium channel modulatornull
[role information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Drug Classes (4)

ClassDescription
carbamate esterAny ester of carbamic acid or its N-substituted derivatives.
organofluorine compoundAn organofluorine compound is a compound containing at least one carbon-fluorine bond.
substituted aniline
secondary amino compoundA compound formally derived from ammonia by replacing two hydrogen atoms by organyl groups.
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Protein Targets (35)

Potency Measurements

ProteinTaxonomyMeasurementAverage (µ)Min (ref.)Avg (ref.)Max (ref.)Bioassay(s)
cytochrome P450 family 3 subfamily A polypeptide 4Homo sapiens (human)Potency21.31740.01237.983543.2770AID1645841
EWS/FLI fusion proteinHomo sapiens (human)Potency25.88700.001310.157742.8575AID1259252; AID1259253; AID1259255; AID1259256
GVesicular stomatitis virusPotency9.52210.01238.964839.8107AID1645842
cytochrome P450 2D6Homo sapiens (human)Potency18.99910.00108.379861.1304AID1645840
Interferon betaHomo sapiens (human)Potency9.52210.00339.158239.8107AID1645842
HLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)Potency9.52210.01238.964839.8107AID1645842
Inositol hexakisphosphate kinase 1Homo sapiens (human)Potency9.52210.01238.964839.8107AID1645842
cytochrome P450 2C9, partialHomo sapiens (human)Potency9.52210.01238.964839.8107AID1645842
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Activation Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Potassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)EC50 (µMol)4.02170.04001.52084.3800AID1557153; AID1604634; AID1604641; AID1874629; AID1874637; AID587711
Potassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)EC50 (µMol)2.62200.04001.32274.3800AID1398549; AID1495580; AID1557153; AID1604634; AID1604640; AID1861507; AID1874629; AID1874637; AID313166; AID587711
UDP-glucuronosyltransferase 1A9Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2B11Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2B17Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
Potassium voltage-gated channel subfamily KQT member 2Rattus norvegicus (Norway rat)EC50 (µMol)2.78672.04002.78674.1500AID1586936; AID1894922; AID1894923
Potassium voltage-gated channel subfamily KQT member 3 Rattus norvegicus (Norway rat)EC50 (µMol)4.15004.15004.15004.1500AID1894923
Sodium channel protein type 2 subunit alphaRattus norvegicus (Norway rat)EC50 (µMol)0.15000.15000.15000.1500AID313166
UDP-glucuronosyltransferase 2B4Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2A1Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2A2Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2B7Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1-6Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1A1 Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1A4Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1A3Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1A5Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2B10 Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2B15Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
Potassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)EC50 (µMol)3.94001.60002.97005.9000AID1586934; AID1604642
UDP-glucuronosyltransferase 2A3Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 2B28Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1A7Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1A10Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
UDP-glucuronosyltransferase 1A8Homo sapiens (human)EC50 (µMol)3.90003.90003.90003.9000AID1604641
Potassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)EC50 (µMol)2.12500.50001.78753.4500AID1586935; AID1604643
Potassium voltage-gated channel subfamily KQT member 2 Mus musculus (house mouse)EC50 (µMol)1.30001.30001.30001.3000AID246570; AID779736; AID94522
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Other Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Potassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)Activity0.32000.04000.27330.4600AID1414250
Potassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)EC2 (µMol)0.33500.33001.06252.0000AID1634031; AID1634032
Potassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)Activity0.32000.04000.27330.4600AID1414250
Potassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)EC2 (µMol)0.33000.33001.16502.0000AID1634031
UDP-glucuronosyltransferase 1A1 Homo sapiens (human)Km460.00004.49006.51339.0000AID624630
UDP-glucuronosyltransferase 1A4Homo sapiens (human)Km322.00007.00007.00007.0000AID214939; AID624633
Potassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)EC2 (µMol)0.34000.34001.80673.5000AID1634032
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Biological Processes (106)

Processvia Protein(s)Taxonomy
protein targetingPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
protein import into nucleusPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
exocytosisPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
endocytosisPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
chemical synaptic transmissionPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
sensory perception of soundPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
gene expressionPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
response to auditory stimulusPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
response to organic cyclic compoundPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
neuron remodelingPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
neuronal action potentialPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
nerve developmentPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
psychomotor behaviorPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
regulation of synaptic plasticityPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
neuron apoptotic processPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
mitochondrial depolarizationPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
membrane hyperpolarizationPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
cellular response to calcium ionPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
cellular response to xenobiotic stimulusPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
potassium ion transmembrane transportPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
apoptosome assemblyPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
excitatory chemical synaptic transmissionPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
inhibitory chemical synaptic transmissionPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
action potential initiationPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
regulation of action potential firing thresholdPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
substantia propria of cornea developmentPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
chemical synaptic transmissionPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
nervous system developmentPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
potassium ion transmembrane transportPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
action potentialPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 1A9Homo sapiens (human)
retinoic acid metabolic processUDP-glucuronosyltransferase 1A9Homo sapiens (human)
flavone metabolic processUDP-glucuronosyltransferase 1A9Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A9Homo sapiens (human)
flavonoid glucuronidationUDP-glucuronosyltransferase 1A9Homo sapiens (human)
xenobiotic glucuronidationUDP-glucuronosyltransferase 1A9Homo sapiens (human)
liver developmentUDP-glucuronosyltransferase 1A9Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 2B11Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2B11Homo sapiens (human)
xenobiotic glucuronidationUDP-glucuronosyltransferase 2B11Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2B11Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 2B17Homo sapiens (human)
steroid metabolic processUDP-glucuronosyltransferase 2B17Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2B17Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2B17Homo sapiens (human)
cell surface receptor signaling pathway via JAK-STATInterferon betaHomo sapiens (human)
response to exogenous dsRNAInterferon betaHomo sapiens (human)
B cell activation involved in immune responseInterferon betaHomo sapiens (human)
cell surface receptor signaling pathwayInterferon betaHomo sapiens (human)
cell surface receptor signaling pathway via JAK-STATInterferon betaHomo sapiens (human)
response to virusInterferon betaHomo sapiens (human)
positive regulation of autophagyInterferon betaHomo sapiens (human)
cytokine-mediated signaling pathwayInterferon betaHomo sapiens (human)
natural killer cell activationInterferon betaHomo sapiens (human)
positive regulation of peptidyl-serine phosphorylation of STAT proteinInterferon betaHomo sapiens (human)
cellular response to interferon-betaInterferon betaHomo sapiens (human)
B cell proliferationInterferon betaHomo sapiens (human)
negative regulation of viral genome replicationInterferon betaHomo sapiens (human)
innate immune responseInterferon betaHomo sapiens (human)
positive regulation of innate immune responseInterferon betaHomo sapiens (human)
regulation of MHC class I biosynthetic processInterferon betaHomo sapiens (human)
negative regulation of T cell differentiationInterferon betaHomo sapiens (human)
positive regulation of transcription by RNA polymerase IIInterferon betaHomo sapiens (human)
defense response to virusInterferon betaHomo sapiens (human)
type I interferon-mediated signaling pathwayInterferon betaHomo sapiens (human)
neuron cellular homeostasisInterferon betaHomo sapiens (human)
cellular response to exogenous dsRNAInterferon betaHomo sapiens (human)
cellular response to virusInterferon betaHomo sapiens (human)
negative regulation of Lewy body formationInterferon betaHomo sapiens (human)
negative regulation of T-helper 2 cell cytokine productionInterferon betaHomo sapiens (human)
positive regulation of apoptotic signaling pathwayInterferon betaHomo sapiens (human)
response to exogenous dsRNAInterferon betaHomo sapiens (human)
B cell differentiationInterferon betaHomo sapiens (human)
natural killer cell activation involved in immune responseInterferon betaHomo sapiens (human)
adaptive immune responseInterferon betaHomo sapiens (human)
T cell activation involved in immune responseInterferon betaHomo sapiens (human)
humoral immune responseInterferon betaHomo sapiens (human)
positive regulation of T cell mediated cytotoxicityHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
adaptive immune responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independentHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of T cell anergyHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
defense responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
immune responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
detection of bacteriumHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of interleukin-12 productionHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of interleukin-6 productionHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
protection from natural killer cell mediated cytotoxicityHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
innate immune responseHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
regulation of dendritic cell differentiationHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
antigen processing and presentation of endogenous peptide antigen via MHC class IbHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2B4Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2B4Homo sapiens (human)
sensory perception of chemical stimulusUDP-glucuronosyltransferase 2A1Homo sapiens (human)
sensory perception of smellUDP-glucuronosyltransferase 2A1Homo sapiens (human)
bile acid metabolic processUDP-glucuronosyltransferase 2A1Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2A1Homo sapiens (human)
bile acid metabolic processUDP-glucuronosyltransferase 2A2Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2A2Homo sapiens (human)
lipid metabolic processUDP-glucuronosyltransferase 2B7Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 2B7Homo sapiens (human)
androgen metabolic processUDP-glucuronosyltransferase 2B7Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2B7Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2B7Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 1-6Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1-6Homo sapiens (human)
liver developmentUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
bilirubin conjugationUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
acute-phase responseUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
response to nutrientUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
steroid metabolic processUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
animal organ regenerationUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
response to lipopolysaccharideUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
retinoic acid metabolic processUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
response to starvationUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
negative regulation of steroid metabolic processUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
flavone metabolic processUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
flavonoid glucuronidationUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
xenobiotic glucuronidationUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
biphenyl catabolic processUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
cellular response to ethanolUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
cellular response to glucocorticoid stimulusUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
cellular response to estradiol stimulusUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
bilirubin conjugationUDP-glucuronosyltransferase 1A4Homo sapiens (human)
heme catabolic processUDP-glucuronosyltransferase 1A4Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A4Homo sapiens (human)
vitamin D3 metabolic processUDP-glucuronosyltransferase 1A4Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 1A3Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 1A3Homo sapiens (human)
bile acid secretionUDP-glucuronosyltransferase 1A3Homo sapiens (human)
retinoic acid metabolic processUDP-glucuronosyltransferase 1A3Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A3Homo sapiens (human)
flavonoid glucuronidationUDP-glucuronosyltransferase 1A3Homo sapiens (human)
xenobiotic glucuronidationUDP-glucuronosyltransferase 1A3Homo sapiens (human)
vitamin D3 metabolic processUDP-glucuronosyltransferase 1A3Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A5Homo sapiens (human)
lipid metabolic processUDP-glucuronosyltransferase 2B10 Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2B10 Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2B10 Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 2B15Homo sapiens (human)
steroid metabolic processUDP-glucuronosyltransferase 2B15Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2B15Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2B15Homo sapiens (human)
potassium ion transportPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
sensory perception of soundPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
inner ear morphogenesisPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
potassium ion transmembrane transportPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2A3Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2A3Homo sapiens (human)
inositol phosphate metabolic processInositol hexakisphosphate kinase 1Homo sapiens (human)
phosphatidylinositol phosphate biosynthetic processInositol hexakisphosphate kinase 1Homo sapiens (human)
negative regulation of cold-induced thermogenesisInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol phosphate biosynthetic processInositol hexakisphosphate kinase 1Homo sapiens (human)
steroid metabolic processUDP-glucuronosyltransferase 2B28Homo sapiens (human)
xenobiotic glucuronidationUDP-glucuronosyltransferase 2B28Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 2B28Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 2B28Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 1A7Homo sapiens (human)
estrogen metabolic processUDP-glucuronosyltransferase 1A7Homo sapiens (human)
coumarin metabolic processUDP-glucuronosyltransferase 1A7Homo sapiens (human)
retinoic acid metabolic processUDP-glucuronosyltransferase 1A7Homo sapiens (human)
flavone metabolic processUDP-glucuronosyltransferase 1A7Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A7Homo sapiens (human)
flavonoid glucuronidationUDP-glucuronosyltransferase 1A7Homo sapiens (human)
xenobiotic glucuronidationUDP-glucuronosyltransferase 1A7Homo sapiens (human)
liver developmentUDP-glucuronosyltransferase 1A7Homo sapiens (human)
lipid metabolic processUDP-glucuronosyltransferase 1A10Homo sapiens (human)
xenobiotic metabolic processUDP-glucuronosyltransferase 1A10Homo sapiens (human)
flavone metabolic processUDP-glucuronosyltransferase 1A10Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A10Homo sapiens (human)
liver developmentUDP-glucuronosyltransferase 1A10Homo sapiens (human)
fatty acid metabolic processUDP-glucuronosyltransferase 1A8Homo sapiens (human)
steroid metabolic processUDP-glucuronosyltransferase 1A8Homo sapiens (human)
coumarin metabolic processUDP-glucuronosyltransferase 1A8Homo sapiens (human)
retinoic acid metabolic processUDP-glucuronosyltransferase 1A8Homo sapiens (human)
negative regulation of fatty acid metabolic processUDP-glucuronosyltransferase 1A8Homo sapiens (human)
negative regulation of steroid metabolic processUDP-glucuronosyltransferase 1A8Homo sapiens (human)
flavone metabolic processUDP-glucuronosyltransferase 1A8Homo sapiens (human)
flavonoid glucuronidationUDP-glucuronosyltransferase 1A8Homo sapiens (human)
xenobiotic glucuronidationUDP-glucuronosyltransferase 1A8Homo sapiens (human)
liver developmentUDP-glucuronosyltransferase 1A8Homo sapiens (human)
cellular glucuronidationUDP-glucuronosyltransferase 1A8Homo sapiens (human)
potassium ion transmembrane transportPotassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Molecular Functions (32)

Processvia Protein(s)Taxonomy
voltage-gated potassium channel activityPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
protein bindingPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
calmodulin bindingPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
voltage-gated potassium channel activityPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
protein bindingPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
calmodulin bindingPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
ankyrin bindingPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1A9Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A9Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A9Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A9Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A9Homo sapiens (human)
protein bindingUDP-glucuronosyltransferase 2B11Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2B11Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 2B17Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2B17Homo sapiens (human)
cytokine activityInterferon betaHomo sapiens (human)
cytokine receptor bindingInterferon betaHomo sapiens (human)
type I interferon receptor bindingInterferon betaHomo sapiens (human)
protein bindingInterferon betaHomo sapiens (human)
chloramphenicol O-acetyltransferase activityInterferon betaHomo sapiens (human)
TAP bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
signaling receptor bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
protein bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
peptide antigen bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
TAP bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
protein-folding chaperone bindingHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 2B4Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2B4Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2A1Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2A2Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 2B7Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2B7Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1-6Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1-6Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1-6Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1-6Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1-6Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
enzyme inhibitor activityUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
steroid bindingUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1A4Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A4Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A4Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A4Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A4Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1A3Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A3Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A3Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A3Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A3Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A5Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A5Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A5Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A5Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2B10 Homo sapiens (human)
UDP-glycosyltransferase activityUDP-glucuronosyltransferase 2B10 Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 2B15Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2B15Homo sapiens (human)
potassium channel activityPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
protein bindingPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
voltage-gated potassium channel activityPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2A3Homo sapiens (human)
inositol-1,3,4,5,6-pentakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol heptakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate 5-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
protein bindingInositol hexakisphosphate kinase 1Homo sapiens (human)
ATP bindingInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate 1-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol hexakisphosphate 3-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol 5-diphosphate pentakisphosphate 5-kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
inositol diphosphate tetrakisphosphate kinase activityInositol hexakisphosphate kinase 1Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 2B28Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1A7Homo sapiens (human)
enzyme inhibitor activityUDP-glucuronosyltransferase 1A7Homo sapiens (human)
protein kinase C bindingUDP-glucuronosyltransferase 1A7Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A7Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A7Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A7Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A7Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1A10Homo sapiens (human)
protein kinase C bindingUDP-glucuronosyltransferase 1A10Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A10Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A10Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A10Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A10Homo sapiens (human)
retinoic acid bindingUDP-glucuronosyltransferase 1A8Homo sapiens (human)
enzyme inhibitor activityUDP-glucuronosyltransferase 1A8Homo sapiens (human)
steroid bindingUDP-glucuronosyltransferase 1A8Homo sapiens (human)
fatty acid bindingUDP-glucuronosyltransferase 1A8Homo sapiens (human)
glucuronosyltransferase activityUDP-glucuronosyltransferase 1A8Homo sapiens (human)
enzyme bindingUDP-glucuronosyltransferase 1A8Homo sapiens (human)
protein homodimerization activityUDP-glucuronosyltransferase 1A8Homo sapiens (human)
protein heterodimerization activityUDP-glucuronosyltransferase 1A8Homo sapiens (human)
voltage-gated potassium channel activityPotassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)
protein bindingPotassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Ceullar Components (36)

Processvia Protein(s)Taxonomy
mitochondrionPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
plasma membranePotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
cell surfacePotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
node of RanvierPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
axon initial segmentPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
synapsePotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
voltage-gated potassium channel complexPotassium voltage-gated channel subfamily KQT member 3Homo sapiens (human)
plasma membranePotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
node of RanvierPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
axon initial segmentPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
synapsePotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
voltage-gated potassium channel complexPotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
membranePotassium voltage-gated channel subfamily KQT member 2Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A9Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A9Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A9Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2B11Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2B17Homo sapiens (human)
membraneUDP-glucuronosyltransferase 2B17Homo sapiens (human)
extracellular spaceInterferon betaHomo sapiens (human)
extracellular regionInterferon betaHomo sapiens (human)
Golgi membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
endoplasmic reticulumHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
Golgi apparatusHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
plasma membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
cell surfaceHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
ER to Golgi transport vesicle membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
secretory granule membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
phagocytic vesicle membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
early endosome membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
recycling endosome membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
extracellular exosomeHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
lumenal side of endoplasmic reticulum membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
MHC class I protein complexHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
extracellular spaceHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
external side of plasma membraneHLA class I histocompatibility antigen, B alpha chain Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2B4Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2A1Homo sapiens (human)
cellular_componentUDP-glucuronosyltransferase 2A2Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2A2Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2B7Homo sapiens (human)
membraneUDP-glucuronosyltransferase 2B7Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1-6Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1-6Homo sapiens (human)
intracellular membrane-bounded organelleUDP-glucuronosyltransferase 1-6Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1-6Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
plasma membraneUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
perinuclear region of cytoplasmUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
endoplasmic reticulum chaperone complexUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
cytochrome complexUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A1 Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A4Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A4Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A4Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A3Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A3Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A3Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A5Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A5Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2B10 Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2B15Homo sapiens (human)
plasma membranePotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
basal plasma membranePotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
voltage-gated potassium channel complexPotassium voltage-gated channel subfamily KQT member 4Homo sapiens (human)
membraneUDP-glucuronosyltransferase 2A3Homo sapiens (human)
fibrillar centerInositol hexakisphosphate kinase 1Homo sapiens (human)
nucleoplasmInositol hexakisphosphate kinase 1Homo sapiens (human)
cytosolInositol hexakisphosphate kinase 1Homo sapiens (human)
nucleusInositol hexakisphosphate kinase 1Homo sapiens (human)
cytoplasmInositol hexakisphosphate kinase 1Homo sapiens (human)
nuclear outer membraneUDP-glucuronosyltransferase 2B28Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 2B28Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 2B28Homo sapiens (human)
perinuclear region of cytoplasmUDP-glucuronosyltransferase 2B28Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A7Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A7Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A7Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A10Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A10Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A10Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A8Homo sapiens (human)
endoplasmic reticulum membraneUDP-glucuronosyltransferase 1A8Homo sapiens (human)
endoplasmic reticulumUDP-glucuronosyltransferase 1A8Homo sapiens (human)
plasma membranePotassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)
voltage-gated potassium channel complexPotassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)
clathrin coatPotassium voltage-gated channel subfamily KQT member 5Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Bioassays (203)

Assay IDTitleYearJournalArticle
AID1296008Cytotoxic Profiling of Annotated Libraries Using Quantitative High-Throughput Screening2020SLAS discovery : advancing life sciences R & D, 01, Volume: 25, Issue:1
Cytotoxic Profiling of Annotated and Diverse Chemical Libraries Using Quantitative High-Throughput Screening.
AID1346987P-glycoprotein substrates identified in KB-8-5-11 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1347160Primary screen NINDS Rhodamine qHTS for Zika virus inhibitors2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID1347411qHTS to identify inhibitors of the type 1 interferon - major histocompatibility complex class I in skeletal muscle: primary screen against the NCATS Mechanism Interrogation Plate v5.0 (MIPE) Libary2020ACS chemical biology, 07-17, Volume: 15, Issue:7
High-Throughput Screening to Identify Inhibitors of the Type I Interferon-Major Histocompatibility Complex Class I Pathway in Skeletal Muscle.
AID1347159Primary screen GU Rhodamine qHTS for Zika virus inhibitors: Unlinked NS2B-NS3 protease assay2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID1346986P-glycoprotein substrates identified in KB-3-1 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1347105qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1745845Primary qHTS for Inhibitors of ATXN expression
AID1347106qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for control Hh wild type fibroblast cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347094qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347107qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh30 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347103qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347098qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347108qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347093qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347096qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for U-2 OS cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347082qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lassa (LASV) Arenavirus: LASV Primary Screen - GLuc reporter signal2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347095qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347090qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347100qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347097qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347083qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lassa (LASV) Arenavirus: Viability assay - alamar blue signal for LASV Primary Screen2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347086qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lymphocytic Choriomeningitis Arenaviruses (LCMV): LCMV Primary Screen - GLuc reporter signal2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347104qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347089qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347092qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347154Primary screen GU AMC qHTS for Zika virus inhibitors2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID1347099qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1508630Primary qHTS for small molecule stabilizers of the endoplasmic reticulum resident proteome: Secreted ER Calcium Modulated Protein (SERCaMP) assay2021Cell reports, 04-27, Volume: 35, Issue:4
A target-agnostic screen identifies approved drugs to stabilize the endoplasmic reticulum-resident proteome.
AID1347102qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347091qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347101qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1604636Activation of human Kv7.2/Kv7.3 expressed in CHO cells assessed as delta V at 10 uM by whole cell patch clamp electrophysiology assay
AID1894922Agonist activity at rat KCNQ2 channel expressed in CHO cells by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894930Anticonvulsant activity in MES induced Kunming mouse model of seizure at 100 mg/kg, po2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1604625Activation of human Kv7.2 expressed in CHO cells assessed as maximal steady-state increase in current amplitude at 10 uM measured within 10 secs at holding potential of -40 mV by whole cell patch clamp electrophysiology assay
AID1894901Agonist activity at human KCNQ1 channel expressed in CHO cells assessed as shift of half voltage of maximal activation at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1604660Photostability of compound in pH 7.4 buffer assessed as metabolite with phenazinium-dimer formation incubated for 6 hrs under visible light irradiation by HPLC/MS/MS analysis
AID1634035Selectivity index, ratio of EC2x for human Kv7.4/5 expressed in HEK293 cells to EC2x for EC2x for human Kv7.2/3 expressed in HEK293 cells
AID214939Binding affinity against human UDP Glucuronosyltransferase 1A4 (UGT1A4)2003Journal of medicinal chemistry, Apr-24, Volume: 46, Issue:9
Pharmacophore and quantitative structure-activity relationship modeling: complementary approaches for the rationalization and prediction of UDP-glucuronosyltransferase 1A4 substrate selectivity.
AID587711Activation of KCNQ2/Q3 expressed in CHO cells by atomic absorption Rb'+ efflux assay2011European journal of medicinal chemistry, Mar, Volume: 46, Issue:3
Design, synthesis and biological activity of pyrazolo[1,5-a]pyrimidin-7(4H)-ones as novel Kv7/KCNQ potassium channel activators.
AID1604630Activation of human Kv7.2 expressed in CHO cells assessed as increase in maximal channel conductance at 0.03 uM in constant voltage pulses by whole cell patch clamp electrophysiology assay
AID1398554Neurotoxicity in Sprague-Dawley rat at 25 mg/kg, ip measured after 30 mins by rotating-rod test2018Bioorganic & medicinal chemistry letters, 09-15, Volume: 28, Issue:17
Design, synthesis and evaluation of novel N-phenylbutanamide derivatives as KCNQ openers for the treatment of epilepsy.
AID1894959Anticonvulsant activity in C57BL/6 mouse 6 Hz seizure model at 32 mA measured after 1 hr2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID246570Effect on outward potassium currents in whole-cell patch clamp assay of HEK 293 cells expressing cloned mouse KCNQ2 channel at -40 mV2005Bioorganic & medicinal chemistry letters, Jan-17, Volume: 15, Issue:2
(S,E)-N-[1-(3-heteroarylphenyl)ethyl]-3-(2-fluorophenyl)acrylamides: synthesis and KCNQ2 potassium channel opener activity.
AID1874646Anticonvulsant activity in PTZ induced C57BL/6 mouse acute seizure model assessed as seizure score at 3 mg/kg, ip pretreated for 30 mins followed by PTZ injection and measured upto 30 mins by Liittjohann's scale analysis
AID1398553Channel opening activity at KCNQ2 (unknown origin) expressed in CHO cells assessed as change in half activation potential at 10 uM by electrophysiological patch-clamp test2018Bioorganic & medicinal chemistry letters, 09-15, Volume: 28, Issue:17
Design, synthesis and evaluation of novel N-phenylbutanamide derivatives as KCNQ openers for the treatment of epilepsy.
AID1604643Activation of human Kv7.5 expressed in CHO cells assessed as increase in channel current amplitude by whole cell patch clamp electrophysiology assay
AID1604649Photostability of compound in pH 7.4 buffer assessed as compound degradation at 100 ug/ml incubated for 2 hrs under natural solar light-irradiation by HPLC analysis relative to control
AID1634036Half life in human liver microsomes
AID1495580Activation of KCNQ2 (unknown origin) expressed in CHO cells at 10 uM after 10 mins by atomic absorption spectrophotometry-based Rb+ flow assay2018Bioorganic & medicinal chemistry letters, 06-01, Volume: 28, Issue:10
Design, synthesis and evaluation of substituted piperidine based KCNQ openers as novel antiepileptic agents.
AID94521Efficacy for mKCNQ2 expressed in HEK293 cells relative to reference compound2004Bioorganic & medicinal chemistry letters, Apr-19, Volume: 14, Issue:8
(S)-N-[1-(4-cyclopropylmethyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-ethyl]-3-(2-fluoro-phenyl)-acrylamide is a potent and efficacious KCNQ2 opener which inhibits induced hyperexcitability of rat hippocampal neurons.
AID1894954Ratio of TC50 for Kunming mouse to EC50 for anticonvulsant activity in Kunming mouse2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1861509Agonist activity at Kv7.2 W236L mutant (unknown origin) assessed as shifting of voltage dependent activation to more negative potentials at 5 uM by SyncroPatch assay2022Bioorganic & medicinal chemistry letters, 09-01, Volume: 71Development of an automated screen for Kv7.2 potassium channels and discovery of a new agonist chemotype.
AID1604658Photostability of compound in pH 7.4 buffer assessed as retention time of metabolite incubated for 6 hrs under visible light irradiation by HPLC/MS analysis
AID1874632Metabolic stability in human liver S9 fraction assessed as phase 2 metabolism by UHPLC-MS/MS analysis
AID313159Analgesic activity in formalin-induced pain hypersensitivity in po dosed rat2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1414250Activation of human wild type Kv7.2/7.3 expressed in CHO cells assessed as 86Rb efflux at 0.001 to 100 uM after 10 mins by microbeta liquid scintillation counting analysis2018Bioorganic & medicinal chemistry letters, 12-15, Volume: 28, Issue:23-24
Novel K
AID1293292Antiepileptic activity in po dosed KM mouse assessed as protection against maximal electroshock-induced seizures administered 30 mins prior to electrical stimulation2016Journal of natural products, Jan-22, Volume: 79, Issue:1
Identification and Evaluation of Antiepileptic Activity of C21 Steroidal Glycosides from the Roots of Cynanchum wilfordii.
AID1604645Photostability of compound in pH 7.4 buffer assessed as compound degradation at 100 ug/ml incubated for 6 hrs under artificial daylight D65 lamp-irradiation by HPLC analysis relative to control
AID1604657Activation of human Kv7.1 expressed in CHO cells assessed as channel current amplitude at 10 uM measured at holding potential of +20 mV and -40 mV by whole cell patch clamp electrophysiology assay
AID1414251Activation of human Kv7.2 W236L mutant/Kv7.3 W265L mutant expressed in CHO cells assessed as 86Rb efflux at 0.001 to 100 uM after 10 mins by microbeta liquid scintillation counting analysis2018Bioorganic & medicinal chemistry letters, 12-15, Volume: 28, Issue:23-24
Novel K
AID1495581Activation of KCNQ2 (unknown origin) expressed in CHO cells assessed as conductivity (I/I0) at 10 uM by electrophysiological patch-clamp test2018Bioorganic & medicinal chemistry letters, 06-01, Volume: 28, Issue:10
Design, synthesis and evaluation of substituted piperidine based KCNQ openers as novel antiepileptic agents.
AID1894940Ratio of drug concentration in brain to plasma of MES induced Kunming mouse model of seizure2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1604654Activation of human Kv7.2 expressed in CHO cells assessed as current amplitude at 10 uM measured after 10 secs upon drug wash-out at holding potential of -40 mV by whole cell patch clamp electrophysiology assay
AID1604633Activation of ICA-insensitive human Kv7.2 F168L mutant expressed in CHO cells assessed as increase in channel current amplitude at 10 uM measured at holding potential of -40 mV by whole cell patch clamp electrophysiology assay
AID1874657Drug concentration in C57BL/6 mouse plasma at 1 mg/kg, ip measured after 60 mins by UHPLC-MS/MS analysis
AID1894955Anticonvulsant activity in Kunming mouse assessed as reduction in MES-induced seizure after 1 hr2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1398551Channel opening activity at KCNQ2 (unknown origin) expressed in CHO cells assessed as conductivity (I/I0 ratio) at 10 uM by electrophysiological patch-clamp test2018Bioorganic & medicinal chemistry letters, 09-15, Volume: 28, Issue:17
Design, synthesis and evaluation of novel N-phenylbutanamide derivatives as KCNQ openers for the treatment of epilepsy.
AID1874628Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells assessed as slope of fluorescent signal at 10 uM by FluxOR fluorescent dye based assay
AID1604623Activation of human Kv7.2 expressed in CHO cells assessed as increase in current amplitude at 10 uM measured at holding potential of -40 mV by whole cell patch clamp electrophysiology assay relative to control
AID1894927Anticonvulsant activity in pentylenetetrazol induced Kunming mouse model of seizure at 30 mg/kg, po after 1 hr2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894943Anticonvulsant activity in Kunming mouse plasma assessed as plasma EC50 level by rotarod test2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1604641Activation of human Kv7.3 expressed in CHO cells assessed as increase in channel current amplitude by whole cell patch clamp electrophysiology assay
AID1604659Photostability of compound in pH 7.4 buffer assessed as formation of 4-fluorobenzaldehyde incubated for 6 hrs under visible light irradiation by GCMS analysis
AID1586936Agonist activity at rat KCNQ2 expressed in CHOK1 cells by whole cell patch clamp assay2019ACS medicinal chemistry letters, Jan-10, Volume: 10, Issue:1
Discovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity.
AID1874656Drug concentration in C57BL/6 mouse brain at 1 mg/kg, ip measured after 60 mins by UHPLC-MS/MS analysis
AID1861507Agonist activity at Kv7.2 (unknown origin) assessed as shifting of voltage dependent activation to more negative potentials by SyncroPatch assay2022Bioorganic & medicinal chemistry letters, 09-01, Volume: 71Development of an automated screen for Kv7.2 potassium channels and discovery of a new agonist chemotype.
AID1894929Anticonvulsant activity in MES induced Kunming mouse model of seizure at 60 mg/kg, po2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894923Agonist activity at rat KCNQ2/3 channel expressed in CHO cells by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID94518Increased outward current at -40 mV mediated by mouse KCNQ2 channel expressed in Xenopus laevis oocytes at 20 uM2004Bioorganic & medicinal chemistry letters, Apr-05, Volume: 14, Issue:7
The synthesis and structure-activity relationships of 3-amino-4-benzylquinolin-2-ones; discovery of novel KCNQ2 channel openers.
AID1894917Agonist activity at human KCNQ4 channel expressed in CHO cells assessed as amplitude change of outward current at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID313170Analgesic activity in formalin-induced pain hypersensitivity in ip dosed rat2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1477024Antagonist activity at NMDA receptor in human IMR90-c4 cells assessed as decrease in NMDA-mediated reduction in cell viability at 0.1 to 10 uM by PrestoBlue assay2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID313168Therapeutic index, ratio of ED50 in rotor rod test in rat to ED50 in rat kindling model of epileptic seizures2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1604624Activation of human Kv7.2 expressed in CHO cells assessed as increase in current amplitude with fast ON kinetics measured at holding potential of -40 mV by whole cell patch clamp electrophysiology assay
AID94522Whole-cell patch-clamp on recombinant mouse KCNQ2 channels expressed in HEK 293 cells at -40 mV2004Bioorganic & medicinal chemistry letters, Apr-19, Volume: 14, Issue:8
(S)-N-[1-(4-cyclopropylmethyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-ethyl]-3-(2-fluoro-phenyl)-acrylamide is a potent and efficacious KCNQ2 opener which inhibits induced hyperexcitability of rat hippocampal neurons.
AID1604652Drug metabolism in human liver S9 fractions assessed as assessed as UGT-mediated phase 2 metabolism at 1 mM preincubated for 5 mins followed by NADPH addition and measured after 60 mins by RP-UHPLC-DAD analysis relative to control
AID1249435Intrinsic clearance in human liver microsomes measured over 1 hr in presence of NADPH regenerating system2015Bioorganic & medicinal chemistry letters, Nov-01, Volume: 25, Issue:21
Discovery of a novel Kv7 channel opener as a treatment for epilepsy.
AID1894944Ratio of drug concentration in Kunming mouse brain to plasma by rotarod test2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1634032Agonist activity at human Kv7.3/Kv7.5 expressed in HEK293 cells assessed as drug concentration that doubles the conductance at voltage leading to 15% channel activation at holding potential of at -80 mV by whole cell patch clamp electrophysiology assay
AID1894961Toxicity in C57BL/6 mouse assessed as sedative effect at 80 mg/kg2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1874638Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells assessed as fold change in maximum current density measured after 24 hrs by whole cell patch clamp based electrophysiological method relative to control
AID1874645Anticonvulsant activity in PTZ induced C57BL/6 mouse acute seizure model assessed as seizure score at 1 mg/kg, ip pretreated for 30 mins followed by PTZ injection and measured upto 30 mins by Liittjohann's scale analysis
AID1894953Drug concentration in Kunming mouse plasma at 300 mg/kg2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894947Neurotoxicity in po dosed Kunming mouse assessed as motor impairment after 1 hr by rotarod test2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1604632Activation of human Kv7.2 W236L mutant expressed in CHO cells assessed as channel current amplitude at 10 uM measured at holding potential of -40 mV by whole cell patch clamp electrophysiology assay
AID1894952Drug concentration in Kunming mouse brain at 300 mg/kg2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894831Agonist activity at rat Kv7.2 channel expressed in CHO cells assessed as amplitude change of outward current at 10 uM by whole cell patch clamp based electrophysiological method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID313165Activity at Kv.7 channel expressed in cloned CHO cells by patch clamp method2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1604648Photostability of compound in pH 7.4 buffer assessed as formation of 4-fluorobenzaldehyde incubated for 6 hrs under visible light irradiation by HPLC analysis
AID1477012Neuroprotective activity against etoposide-induced apoptosis in rat PC12 cells assessed as cell viability at 3 uM pretreated for 4 hrs followed by etoposide challenge measured after 48 hrs by PrestoBlue assay (Rvb = 52.13 +/- 1.13%)2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID1894933Anticonvulsant activity in po dosed MES induced Kunming mouse model of seizure2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894920Agonist activity at human KCNQ5 channel expressed in CHO cells assessed as shift of half voltage of maximal activation at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1874629Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells assessed as slope of fluorescent signal by FluxOR fluorescent dye based assay
AID1604631Activation of human Kv7.2 expressed in CHO cells assessed as half-activation voltage at 0.03 uM in constant voltage pulse by whole cell patch clamp electrophysiology assay (Rvb = -38.2 +/- 2 mV)
AID313166Activity at Kv 7.2 channel expressed in cloned CHO cells by [86Rb] efflux assay2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1604622Activation of human Kv7.2 expressed in CHO cells assessed as increase in current amplitude at 10 uM measured at holding potential of 0 mV by whole cell patch clamp electrophysiology assay relative to control
AID1586942Effect on voltage-dependent activation of human KCNQ4 expressed in CHOK1 cells assessed as negative shift in current activation curve at 10 uM by whole cell patch clamp assay2019ACS medicinal chemistry letters, Jan-10, Volume: 10, Issue:1
Discovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity.
AID1874634Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells assessed as leftward shift change in half activation potential at 1 uM measured after 24 hrs by whole cell patch clamp based electrophysiological method
AID1894830Agonist activity at rat Kv7.2 channel expressed in CHO cells assessed as shift of half voltage of maximal activation at 10 uM by whole cell patch clamp based electrophysiological method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID779735Induction of mouse KCNQ2 expressed in HEK293 cells at -40 mV holding potential by whole-cell patch clamp assay relative to (+/-)-N-(1-(benzo[d][1,3]dioxol-5-yl)ethyl)-3-(2-chlorophenyl)acrylamide2013Bioorganic & medicinal chemistry letters, Nov-15, Volume: 23, Issue:22
Discovery of (S,E)-3-(2-fluorophenyl)-N-(1-(3-(pyridin-3-yloxy)phenyl)ethyl)-acrylamide as a potent and efficacious KCNQ2 (Kv7.2) opener for the treatment of neuropathic pain.
AID1894913Agonist activity at rat KCNQ2/3 channel expressed in CHO cells assessed as amplitude change of outward current at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1249437Efflux ratio of permeability from apical to basolateral over basolateral to apical side in MDCK cells transfected with MDR12015Bioorganic & medicinal chemistry letters, Nov-01, Volume: 25, Issue:21
Discovery of a novel Kv7 channel opener as a treatment for epilepsy.
AID1894903Agonist activity at human KCNQ1 channel expressed in CHO cells assessed as amplitude change of outward current at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894938Anticonvulsant activity in MES induced Kunming mouse model of seizure assessed as EC50 in brain2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1398549Channel opening activity at KCNQ2 (unknown origin) expressed in CHO cells after 10 mins by atomic absorption spectrophotometry-based Rb+ flow assay2018Bioorganic & medicinal chemistry letters, 09-15, Volume: 28, Issue:17
Design, synthesis and evaluation of novel N-phenylbutanamide derivatives as KCNQ openers for the treatment of epilepsy.
AID313169Therapeutic index, ratio of ED50 in rotor rod test in rat to ED50 in rat spinal nerve ligation model of neuropathic pain2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1894939Anticonvulsant activity in MES induced Kunming mouse model of seizure assessed as EC50 in plasma2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1557154Agonist activity at human KCNQ2/3 expressed in HEK293 cells by FLIPR based thallium influx assay relative to retigabine2019Bioorganic & medicinal chemistry letters, 10-01, Volume: 29, Issue:19
Design and evaluation of pyrazolopyrimidines as KCNQ channel modulators.
AID1604642Activation of human Kv7.4 expressed in CHO cells assessed as increase in channel current amplitude by whole cell patch clamp electrophysiology assay
AID1604651Drug metabolism in human liver S9 fractions assessed as CYP450-mediated phase 1 metabolism at 1 mM preincubated for 5 mins followed by NADPH addition and measured after 60 mins by RP-UHPLC-DAD analysis relative to control
AID1477023Antagonist activity at NMDA receptor in human IMR90-c4 cells assessed as decrease in NMDA-mediated reduction in cell viability at 30 uM by PrestoBlue assay2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID1894942Anticonvulsant activity in Kunming mouse brain assessed as brain EC50 level by rotarod test2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894951Neurotoxicity in Kunming mouse assessed as motor impairment rate at 60 mg/kg, po after 1 hr by rotarod test2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1604638Activation of human Kv7.4 expressed in CHO cells assessed as delta V at 10 uM by whole cell patch clamp electrophysiology assay
AID1874635Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells at -80 mV measured after 24 hrs by whole cell patch clamp based electrophysiological method
AID1604627Lipophilicity, log P of the compound
AID1604639Activation of human Kv7.5 expressed in CHO cells assessed as delta V at 10 uM by whole cell patch clamp electrophysiology assay
AID1868422Inhibition of KCNQ2/3 (unknown origin) at a holding potential -40 mV at 30 uM by whole cell patch clamp electrophysiology relative to control2022European journal of medicinal chemistry, Jul-05, Volume: 237Optimization of 4-arylthiophene-3-carboxylic acid derivatives as inhibitors of ANO1: Lead optimization studies toward their analgesic efficacy for inflammatory pain.
AID1874654Toxicity in PTZ induced C57BL/6 mouse acute seizure model assessed as mortality at 3 mg/kg, ip
AID1894921Agonist activity at human KCNQ5 channel expressed in CHO cells assessed as amplitude change of outward current at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894957Ratio of TD50 for Kunming mouse to ED50 for anticonvulsant activity in Kunming mouse2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1249436Permeability in dog RRCK cells after 2 hrs by transwell assay2015Bioorganic & medicinal chemistry letters, Nov-01, Volume: 25, Issue:21
Discovery of a novel Kv7 channel opener as a treatment for epilepsy.
AID1586935Agonist activity at human KCNQ5 expressed in CHOK1 cells by whole cell patch clamp assay2019ACS medicinal chemistry letters, Jan-10, Volume: 10, Issue:1
Discovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity.
AID1604653Drug metabolism in human liver S9 fractions assessed as assessed as NAT-mediated phase 2 metabolism at 1 mM preincubated for 5 mins followed by NADPH addition and measured after 60 mins by RP-UHPLC-DAD analysis relative to control
AID1874659Lipophilicity, logP of the compound
AID1874637Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells at + 80 mV assessed as leftward shift change in half activation potential measured after 24 hrs by whole cell patch clamp based electrophysiological method
AID1586920Activity at rat KCNQ2 expressed in CHOK1 cells assessed as ratio of amplitude of outward current in presence of test compound to amplitude of outward current in absence of test compound at 10 uM at -10 mV by whole cell patch clamp assay2019ACS medicinal chemistry letters, Jan-10, Volume: 10, Issue:1
Discovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity.
AID779736Induction of mouse KCNQ2 expressed in HEK293 cells at -40 mV holding potential by whole-cell patch clamp assay2013Bioorganic & medicinal chemistry letters, Nov-15, Volume: 23, Issue:22
Discovery of (S,E)-3-(2-fluorophenyl)-N-(1-(3-(pyridin-3-yloxy)phenyl)ethyl)-acrylamide as a potent and efficacious KCNQ2 (Kv7.2) opener for the treatment of neuropathic pain.
AID1894909Agonist activity at rat KCNQ3 A278T mutant expressed in CHO cells assessed as amplitude change of outward current at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1557153Agonist activity at human KCNQ2/3 expressed in HEK293 cells by FLIPR based thallium influx assay2019Bioorganic & medicinal chemistry letters, 10-01, Volume: 29, Issue:19
Design and evaluation of pyrazolopyrimidines as KCNQ channel modulators.
AID1634033Agonist activity at human Kv7.4 expressed in HEK293 cells assessed as drug concentration that doubles the conductance at voltage leading to 15% channel activation at holding potential of at -80 mV by whole cell patch clamp electrophysiology assay
AID1634031Agonist activity at human Kv7.2/Kv7.3 expressed in HEK293 cells assessed as drug concentration that doubles the conductance at voltage leading to 15% channel activation at holding potential of at -80 mV by whole cell patch clamp electrophysiology assay
AID1604634Activation of human Kv7.2/Kv7.3 expressed in CHO cells assessed as increase in channel current amplitude by whole cell patch clamp electrophysiology assay
AID624630Drug glucuronidation reaction catalyzed by human recombinant UGT1A12005Pharmacology & therapeutics, Apr, Volume: 106, Issue:1
UDP-glucuronosyltransferases and clinical drug-drug interactions.
AID1495582Activation of KCNQ2 (unknown origin) expressed in CHO cells assessed as half-maximum activation voltage left shift at 10 uM by electrophysiological patch-clamp test2018Bioorganic & medicinal chemistry letters, 06-01, Volume: 28, Issue:10
Design, synthesis and evaluation of substituted piperidine based KCNQ openers as novel antiepileptic agents.
AID1874636Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells at -120 mV measured after 24 hrs by whole cell patch clamp based electrophysiological method
AID1249438Toxicity in human THLE cells assessed as ATP depletion2015Bioorganic & medicinal chemistry letters, Nov-01, Volume: 25, Issue:21
Discovery of a novel Kv7 channel opener as a treatment for epilepsy.
AID1894956Anticonvulsant activity in Kunming mouse assessed as reduction in Sc-PTZ induced seizure after 1 hr2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894945Neurotoxicity in Kunming mouse assessed as motor impairment rate at 250 mg/kg, po after 1 hr by rotarod test2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1894912Agonist activity at rat KCNQ2/3 channel expressed in CHO cells assessed as shift of half voltage of maximal activation at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1874658Ratio of drug concentration in brain to plasma in C57BL/6 mouse at 1 mg/kg, ip measured after 60 mins by UHPLC-MS/MS analysis
AID461907Antinociceptive activity in formalin-treated Sprague-Dawley rat model assessed as reduction in hind paw flinches at 10 mg/kg, po measured during 11 to 60 mins of phase 2 flinches2010Journal of medicinal chemistry, Jan-28, Volume: 53, Issue:2
Novel KCNQ2/Q3 agonists as potential therapeutics for epilepsy and neuropathic pain.
AID1894916Agonist activity at human KCNQ4 channel expressed in CHO cells assessed as shift of half voltage of maximal activation at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1477028Neuroprotective activity against etoposide-induced apoptosis in rat PC12 cells assessed as increase in Bcl2/Bax ratio at 3 uM pretreated for 4 hrs followed by etoposide challenge measured after 48 hrs by Western blot method2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID1495578Activation of KCNQ2 (unknown origin) expressed in CHO cells at 10 uM incubated for 20 mins in dark measured every 2 secs for 10 secs by fluorescence-based thallium influx assay relative to control2018Bioorganic & medicinal chemistry letters, 06-01, Volume: 28, Issue:10
Design, synthesis and evaluation of substituted piperidine based KCNQ openers as novel antiepileptic agents.
AID1323835Displacement of [3H]rosiglitazone from recombinant human C-terminal His-tagged MitoNEET cytosolic domain (32 to 108 residues) expressed in Escherichia coli BL21 by Cheng-Prusoff analysis2016Bioorganic & medicinal chemistry letters, 11-01, Volume: 26, Issue:21
Identification of small molecules that bind to the mitochondrial protein mitoNEET.
AID249628Relative efficacy as ratio of maximal current amplitudes for compound and reference2005Bioorganic & medicinal chemistry letters, Jan-17, Volume: 15, Issue:2
(S,E)-N-[1-(3-heteroarylphenyl)ethyl]-3-(2-fluorophenyl)acrylamides: synthesis and KCNQ2 potassium channel opener activity.
AID1586941Effect on voltage-dependent activation of rat KCNQ2 expressed in CHOK1 cells assessed as negative shift in current activation curve at 10 uM by whole cell patch clamp assay2019ACS medicinal chemistry letters, Jan-10, Volume: 10, Issue:1
Discovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity.
AID1604635Activation of human Kv7.2 expressed in CHO cells assessed as delta V at 10 uM by whole cell patch clamp electrophysiology assay
AID1874631Metabolic stability in human liver S9 fraction assessed as phase 1 metabolism by UHPLC-MS/MS analysis
AID1477025Neuroprotective activity against etoposide-induced apoptosis in rat PC12 cells assessed as increase in Bcl2/Bax ratio at 3 uM pretreated for 4 hrs followed by etoposide challenge measured after 24 hrs by Western blot method2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID313167Toxicity in rat by rotarod test2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1477031Induction of autophagy in rat PC12 cells at 3 uM after 48 hrs by MDC staining-based flow cytometric method relative to control2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID1477020Neuroprotective activity in rat PC12 cells assessed as decrease in H2O2-induced reactive oxygen species generation at 10 uM by CellROX/DAPI-blue staining-based fluorescence microscopic method2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID1604647Photostability of compound in pH 7.4 buffer assessed as formation of ethyl (2,4-bis((4-fluorobenzyl)amino)phenyl)carbamate by measuring retention time of metabolite incubated for 6 hrs under visible light irradiation by HPLC/MS analysis
AID1477021Neuroprotective activity against H2O2-induced apoptosis in rat PC12 cells assessed as increase in cell viability at 1 to 30 uM after 4 hrs by PrestoBlue assay2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID1894908Agonist activity at rat KCNQ3 A278T mutant expressed in CHO cells assessed as shift of half voltage of maximal activation at 10 uM by patch clamp method2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1477016Neuroprotective activity against etoposide-induced apoptosis in human IMR90-c4 cells assessed as increase in cell viability at 10 to 30 uM pretreated for 4 hrs followed by etoposide challenge measured after 36 hrs by PrestoBlue assay2017Journal of medicinal chemistry, 12-14, Volume: 60, Issue:23
Discovery of Aromatic Carbamates that Confer Neuroprotective Activity by Enhancing Autophagy and Inducing the Anti-Apoptotic Protein B-Cell Lymphoma 2 (Bcl-2).
AID624633Drug glucuronidation reaction catalyzed by human recombinant UGT1A42005Pharmacology & therapeutics, Apr, Volume: 106, Issue:1
UDP-glucuronosyltransferases and clinical drug-drug interactions.
AID1604644Photostability of compound in pH 7.4 buffer assessed as compound degradation at 100 ug/ml incubated for 6 hrs under UV-irradiation at wavelength of 365 and 264 nm by HPLC analysis
AID461912Analgesic activity in Sprague-Dawley rat assessed as reduction of spinal nerve ligation-induced allodynia score at 10 mg/kg, po2010Journal of medicinal chemistry, Jan-28, Volume: 53, Issue:2
Novel KCNQ2/Q3 agonists as potential therapeutics for epilepsy and neuropathic pain.
AID1604661Half life in human
AID1894960Anticonvulsant activity in C57BL/6 mouse 6 Hz seizure model at 44 mA measured after 1 hr2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1586934Agonist activity at human KCNQ4 expressed in CHOK1 cells by whole cell patch clamp assay2019ACS medicinal chemistry letters, Jan-10, Volume: 10, Issue:1
Discovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity.
AID1604628Hydrophobicity of compound assessed as self aggregating property by measuring decrease in ratio between fluorescence intensity peaks at 372 nm to 383 nm at 0.7 to 100 uM by pyrene based fluorescence spectroscopic method
AID1604650Photostability of compound in pH 7.4 buffer assessed as compound degradation at 100 ug/ml incubated for 4 hrs under natural solar light-irradiation by HPLC analysis relative to control
AID1894934Drug concentration in Kunming mouse brain at 100 mg/kg2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1604637Activation of human Kv7.3 expressed in CHO cells assessed as delta V at 30 uM by whole cell patch clamp electrophysiology assay
AID1398550Channel opening activity at KCNQ2 (unknown origin) expressed in CHO cells at 10 uM incubated for 20 mins in dark measured every 2 secs for 10 secs by fluorescence-based thallium influx assay relative to control2018Bioorganic & medicinal chemistry letters, 09-15, Volume: 28, Issue:17
Design, synthesis and evaluation of novel N-phenylbutanamide derivatives as KCNQ openers for the treatment of epilepsy.
AID461908Antinociceptive activity in formalin-treated Sprague-Dawley rat model assessed as reduction in hind paw flinches at 17 mg/kg, po measured during 11 to 60 mins of phase 2 flinches2010Journal of medicinal chemistry, Jan-28, Volume: 53, Issue:2
Novel KCNQ2/Q3 agonists as potential therapeutics for epilepsy and neuropathic pain.
AID1894935Drug concentration in Kunming mouse plasma at 100 mg/kg2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID246197Effective concentration against whole-cell patch clamp from mouse HEK293 cells2004Bioorganic & medicinal chemistry letters, Sep-06, Volume: 14, Issue:17
Synthesis and KCNQ2 opener activity of N-(1-benzo[1,3]dioxol-5-yl-ethyl, N-[1-(2,3-dihydro-benzofuran-5-yl)-ethyl, and N-[1-(2,3-dihydro-1H-indol-5-yl)-ethyl acrylamides.
AID313160Analgesic activity in CCI and SNL nerve injury in po dosed rat model of pain2007Journal of medicinal chemistry, May-31, Volume: 50, Issue:11
Kv7 (KCNQ) channel modulators and neuropathic pain.
AID1398552Anticonvulsant activity in maximal electroshock induced Kunming mouse assessed as epilepsy incidence at 25 mg/kg, ip measured after 30 mins2018Bioorganic & medicinal chemistry letters, 09-15, Volume: 28, Issue:17
Design, synthesis and evaluation of novel N-phenylbutanamide derivatives as KCNQ openers for the treatment of epilepsy.
AID1604646Photostability of compound in pH 7.4 buffer assessed as compound degradation at 100 ug/ml incubated for 6 hrs under natural solar light-irradiation by HPLC analysis relative to control
AID1861510Agonist activity at Kv7.2 (unknown origin) assessed as shifting of voltage dependent activation to more negative potentials by SyncroPatch assay relative to control2022Bioorganic & medicinal chemistry letters, 09-01, Volume: 71Development of an automated screen for Kv7.2 potassium channels and discovery of a new agonist chemotype.
AID1861511Agonist activity at Kv7.2 W236L mutant (unknown origin) assessed as shifting of voltage dependent activation to more negative potentials by SyncroPatch assay relative to control2022Bioorganic & medicinal chemistry letters, 09-01, Volume: 71Development of an automated screen for Kv7.2 potassium channels and discovery of a new agonist chemotype.
AID1874660Half life in C57BL/6 mouse plasma at 3 mg/kg, ip measured upto 24 hrs by UHPLC-MS/MS analysis
AID1323834Displacement of [3H]rosiglitazone from recombinant human C-terminal His-tagged MitoNEET cytosolic domain (32 to 108 residues) expressed in Escherichia coli BL21 by scintillation proximity assay2016Bioorganic & medicinal chemistry letters, 11-01, Volume: 26, Issue:21
Identification of small molecules that bind to the mitochondrial protein mitoNEET.
AID1634034Agonist activity at human Kv7.4/Kv7.5 expressed in HEK293 cells assessed as drug concentration that doubles the conductance at voltage leading to 15% channel activation at holding potential of at -80 mV by whole cell patch clamp electrophysiology assay
AID1894946Neurotoxicity in Kunming mouse assessed as motor impairment rate at 300 mg/kg, po after 1 hr by rotarod test2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1861508Agonist activity at Kv7.2 (unknown origin) assessed as shifting of voltage dependent activation to more negative potentials at 5 uM by SyncroPatch assay2022Bioorganic & medicinal chemistry letters, 09-01, Volume: 71Development of an automated screen for Kv7.2 potassium channels and discovery of a new agonist chemotype.
AID1604640Activation of human Kv7.2 expressed in CHO cells assessed as increase in channel current amplitude by whole cell patch clamp electrophysiology assay
AID587713Activation of human KCNQ2/Q3 expressed in CHO cells assessed as increase in channel current at -40 mV holding potential at 10 uM by whole cell patch-clamp assay2011European journal of medicinal chemistry, Mar, Volume: 46, Issue:3
Design, synthesis and biological activity of pyrazolo[1,5-a]pyrimidin-7(4H)-ones as novel Kv7/KCNQ potassium channel activators.
AID587717Activation of KCNQ1 expressed in HEK293 cells upto 100 uM by atomic absorption Rb'+ efflux assay2011European journal of medicinal chemistry, Mar, Volume: 46, Issue:3
Design, synthesis and biological activity of pyrazolo[1,5-a]pyrimidin-7(4H)-ones as novel Kv7/KCNQ potassium channel activators.
AID1894926Anticonvulsant activity in MES induced Kunming mouse model of seizure at 30 mg/kg, po after 1 hr2021Journal of medicinal chemistry, 05-13, Volume: 64, Issue:9
Discovery of HN37 as a Potent and Chemically Stable Antiepileptic Drug Candidate.
AID1874647Anticonvulsant activity in PTZ induced C57BL/6 mouse acute seizure model assessed as time for maximal seizure at 3 mg/kg, ip pretreated for 30 mins followed by PTZ injection and measured upto 30 mins by Liittjohann's scale analysis
AID1346689Human Kv7.5 (Voltage-gated potassium channels)2002European journal of pharmacology, Feb-22, Volume: 437, Issue:3
Activation of KCNQ5 channels stably expressed in HEK293 cells by BMS-204352.
AID1346713Human Kv7.3 (Voltage-gated potassium channels)2001The Journal of neuroscience : the official journal of the Society for Neuroscience, Aug-01, Volume: 21, Issue:15
Activation of expressed KCNQ potassium currents and native neuronal M-type potassium currents by the anti-convulsant drug retigabine.
AID1346699Human Kv7.4 (Voltage-gated potassium channels)2001The Journal of neuroscience : the official journal of the Society for Neuroscience, Aug-01, Volume: 21, Issue:15
Activation of expressed KCNQ potassium currents and native neuronal M-type potassium currents by the anti-convulsant drug retigabine.
AID1346696Human Kv7.2 (Voltage-gated potassium channels)2001The Journal of neuroscience : the official journal of the Society for Neuroscience, Aug-01, Volume: 21, Issue:15
Activation of expressed KCNQ potassium currents and native neuronal M-type potassium currents by the anti-convulsant drug retigabine.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (375)

TimeframeStudies, This Drug (%)All Drugs %
pre-19900 (0.00)18.7374
1990's12 (3.20)18.2507
2000's106 (28.27)29.6817
2010's210 (56.00)24.3611
2020's47 (12.53)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 39.93

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index39.93 (24.57)
Research Supply Index6.02 (2.92)
Research Growth Index5.18 (4.65)
Search Engine Demand Index61.55 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (39.93)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials26 (6.79%)5.53%
Reviews44 (11.49%)6.00%
Case Studies7 (1.83%)4.05%
Observational3 (0.78%)0.25%
Other303 (79.11%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Clinical Trials (25)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Developing Neuronal KCNQ Channel Modulators for Mood Disorders [NCT03043560]Phase 245 participants (Actual)Interventional2017-09-25Completed
A Multicentre, Open-Label, Long-Term, Safety and Tolerability Study of Retigabine Immediate Release (IR) in Adults With Partial-Onset Seizures (Extension of Study RGB113905) [NCT01336621]Phase 398 participants (Actual)Interventional2011-02-21Completed
An Interaction Study to Assess the Effect of the Ezogabine/Retigabine and the Main Metabolite NAMR on the Pharmacokinetics of Digoxin in Healthy Volunteers [NCT01583036]Phase 130 participants (Actual)Interventional2012-01-16Completed
A Randomized, Double-Blind, Placebo-Controlled, Multicenter, Parallel-Group Phase 3 Study to Determine the Efficacy and Safety of Retigabine (1200 mg/Day) Used as Adjunctive Therapy in Refractory Epilepsy Patients With Partial-Onset Seizures [NCT00232596]Phase 3306 participants (Actual)Interventional2005-09-30Completed
A Randomized, Double-Blind, Placebo-Controlled, Phase 2a Proof-of-Concept Study to Evaluate the Efficacy of Maximally Tolerated Doses of Retigabine vs. Placebo in Reducing the Pain Associated With Post-Herpetic Neuralgia [NCT00612105]Phase 2187 participants (Actual)Interventional2007-10-31Completed
A Multicenter, Open-label, Long-term, Safety, Tolerability and Efficacy Study of Retigabine in Adult Epilepsy Patients With Partial-onset Seizures (Extension of Study VRX-RET-E22-301) [NCT00310375]Phase 3181 participants (Actual)Interventional2006-05-01Completed
Randomized, Double-Blind, Placebo-Controlled, Multicenter, Parallel-Group Phase 3 Study - Determine Efficacy and Safety of Two Doses of Retigabine (900 Mg/Day and 600 Mg/Day) Used as Adjunctive Therapy in Refractory Epilepsy Patients With Partial-Onset Se [NCT00235755]Phase 3539 participants (Actual)Interventional2005-12-31Completed
A Multicenter, Open-Label, Long-Term, Safety, Tolerability and Efficacy Study of Retigabine in Adult Epilepsy Patients With Partial-Onset Seizures (Extension of Study VRX-RET-E22-302) [NCT00310388]Phase 3376 participants (Actual)Interventional2006-07-05Terminated(stopped due to No longer any benefit in collecting data since retigabine has been withdrawn from market.)
An Open-Label, Flexible-Dose Study of Retigabine Immediate Release (IR) as Adjunctive Therapy to Specified Monotherapy Antiepileptic Treatments in Adults With Partial -Onset Seizures [NCT01227902]Phase 3203 participants (Actual)Interventional2010-07-31Completed
An Open-Label Extension of the Study XEN496 in Children With KCNQ2 Developmental and Epileptic Encephalopathy [NCT04912856]Phase 38 participants (Actual)Interventional2021-08-17Terminated(stopped due to Sponsor decision; not a safety decision)
Open-label, Multiple Dose Study to Evaluate the Parmacokinetics, Safety and Tolerability of Ezogabine/Retigabine as Adjunctive Treatment in Subjects Aged From 12 Years to Less Than 18 Years With Partial Onset Seizures or Lennox-Gastaut Syndrome [NCT01494584]Phase 25 participants (Actual)Interventional2012-07-25Terminated(stopped due to Terminated after placing the study on hold at the request of the FDA)
A Phase 2 Pharmacodynamic Trial of Ezogabine (Retigabine) on Neuronal Excitability in Amyotrophic Lateral Sclerosis [NCT02450552]Phase 265 participants (Actual)Interventional2015-06-30Completed
An Open Label, Single-dose, Fixed Sequence, Two Treatment Period Study to Assess the Effect of Haemodialysis on the Pharmacokinetics of Ezogabine/Retigabine and the N-acetyl Metabolite of Ezogabine/Retigabine (NAMR). [NCT01480609]Phase 18 participants (Actual)Interventional2011-11-30Completed
A Phase 3 Study of Adjunctive XEN496 in Pediatric Subjects With KCNQ2 Developmental and Epileptic Encephalopathy [NCT04639310]Phase 38 participants (Actual)Interventional2021-03-29Terminated(stopped due to Sponsor decision; Not a safety decision)
Cortical Excitability Changes Induced by Retigabine: a Transcranial Magnetic Stimulation Study [NCT01823159]Phase 315 participants (Actual)Interventional2013-04-30Completed
An Open-label, Single Centre, Parallel Group Study to Evaluate the Safety and Pharmacokinetics of Single Oral Doses of Retigabine Extended Release (XR) Formulation in Healthy Adult Japanese and Caucasian Subjects [NCT01691872]Phase 10 participants (Actual)Interventional2012-10-10Withdrawn(stopped due to Development plan of retigabine XR in Japan was readjusted.)
An Open-label, Randomized, Single Centre, 4-way Crossover Study to Evaluate the Pharmacokinetics of Single Oral Doses of Ezogabine/Retigabine in Healthy Adult Taiwanese Subjects [NCT01462669]Phase 11 participants (Actual)Interventional2012-04-10Completed
A Multicentre, Open-label, Long-term, Safety, Tolerability, and Efficacy Study of Retigabine Immediate-release (IR) in Asian Adults With Partial Onset Seizures (Extension of Study RTG114855) [NCT01777139]Phase 330 participants (Actual)Interventional2013-04-11Completed
Meta-Analysis of VRX-RET-E22-303 and VRX-RET-E22-304: Two Multicenter, Open-Label, Long-Term, Safety, Tolerability and Efficacy Studies of Retigabine in Adult Epilepsy Patients With Partial-onset Seizures (Extensions of Studies VRX-RET-E22-301 and VRX-RET [NCT01457989]1 participants (Actual)Observational2011-08-31Completed
RTG113388, a Long-term, Open-label Safety Extension Study of Retigabine/Ezogabine in Pediatric Subjects With Partial Onset Seizures (>= 12 Years Old) and Subjects With Lennox-Gastaut Syndrome (>=12 Years Old) [NCT01668654]Phase 34 participants (Actual)Interventional2012-09-04Terminated(stopped due to FDA placed a clinical hold on the Pediatric Program requiring retigabine discontinuation in subjects; early termination allows for timely reporting of results.)
A Randomised, Double-blind, Placebo-controlled, Parallel-group, Multicentre Study to Determine the Efficacy and Safety of 2 Doses of Retigabine Immediate Release (900 mg/Day and 600 mg/Day) Used as Adjunctive Therapy in Adult Asian Subjects With Drug-resi [NCT01648101]Phase 376 participants (Actual)Interventional2012-08-29Terminated(stopped due to Registration of the medicine is no longer being pursued in South Korea, Taiwan or Vietnam)
Systematic Review: Retigabine for Adjunctive Therapy in Partial Epilepsy [NCT01587339]6,498 participants (Actual)Observational2010-09-30Completed
A Proof-Of-Concept Clinical Trial of a Novel KCNQ Potentiator in Major Depressive Disorder [NCT02149836]Phase 218 participants (Actual)Interventional2014-08-31Completed
Study PTG116878, a Dose-Optimization Study of Ezogabine/Retigabine Immediate Release Tablets Versus Placebo in the Adjunctive Treatment of Subjects With Partial-Onset Seizures [NCT01721317]Phase 46 participants (Actual)Interventional2012-12-19Terminated(stopped due to After reevaluation of the benefit: risk profile of ezogabine/retigabine, GSK does not believe the early adjunctive treatment study population is appropriate.)
An Open Label Study to Evaluate the Effects of Ezogabine/Retigabine Added to Existing Anti-epileptic Drug(s) on Urinary Voiding Function in Subjects With Partial Onset Seizures [NCT01607346]Phase 410 participants (Actual)Interventional2013-03-27Terminated
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

TrialOutcome
NCT00232596 (20) [back to overview]Number of Participants Reporting New Seizure Types in the Indicated Categories During the DB Phase (Titration and Maintenance Phases) That Were Not Reported at Baseline
NCT00232596 (20) [back to overview]Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the End of DB Phase (Titration and Maintenance Phases) by Indicated Quartile Reduction Categories
NCT00232596 (20) [back to overview]Number of Participants Who Experienced the Indicated Level of Exacerbation and Reduction in the 28-day Total Partial Seizure Frequency From Baseline During the Maintenance Phase
NCT00232596 (20) [back to overview]Number of Participants Who Reported the Indicated Renal and Urinary Disorder Adverse Events at a Frequency Threshold of 2% (in Any Treatment Arm)
NCT00232596 (20) [back to overview]Number of Participants Who Were Responders and Non-responders in the DB Phase
NCT00232596 (20) [back to overview]Number of Participants Who Were Responders and Non-responders in the Maintenance Phase
NCT00232596 (20) [back to overview]Number of Participants Who Were Seizure-free During the DB Phase (Titration and Maintenance Phases)
NCT00232596 (20) [back to overview]Number of Participants Who Were Seizure-free During the Maintenance Phase
NCT00232596 (20) [back to overview]Number of Participants Whose Clinical Laboratory Values Were Deemed an Adverse Event by the Investigator (>=2% in Any Treatment Arm)
NCT00232596 (20) [back to overview]Number of Participants With a >=7% Increase in Body Weight During Weeks 2, 4, and 6 of theTitration Phase and Weeks 7, 8, 10, 14, and 18 of the Maintenance Phase
NCT00232596 (20) [back to overview]Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the End of the DB Phase (Titration and Maintenance Phases) by Indicated Decile Reduction and Increase Categories
NCT00232596 (20) [back to overview]Number of Participants With the Indicated Reduction From Baseline in the 28-day Total Partial Seizure Frequency During the Maintenance Phase
NCT00232596 (20) [back to overview]Quality of Life (QOL) Assessed by QOL in Epilepsy-Problems Questionnaire (QOLIE-31-P) at Baseline (Week 0) and Weeks 6, 10, and 18
NCT00232596 (20) [back to overview]Clinical Global Impression-Improvement (CGI-I) Score at the End of the Maintenance Phase
NCT00232596 (20) [back to overview]Patient Global Impression (PGI) Score at the End of the Maintenance Phase
NCT00232596 (20) [back to overview]Percent Change From Baseline (BL) in the 28-day Total Partial Seizure Frequency During the Maintenance Phase
NCT00232596 (20) [back to overview]Percent Change in the 28-day Total Partial Seizure (PS) Frequency From Baseline (BL) to the End of the Double-blind (DB) Phase (Titration and Maintenance Phases)
NCT00232596 (20) [back to overview]Percentage of Seizure-free Days During the DB Phase (Titration and Maintenance Phases)
NCT00232596 (20) [back to overview]Percentage of Seizure-free Days During the Maintenance Phase
NCT00232596 (20) [back to overview]Change From Baseline in Post-void Residual Urine Volume at Weeks 10 and 18 of the DB Treatment Phase
NCT00235755 (20) [back to overview]Number of Participants Who Were Responders and Non-responders During the DB Phase
NCT00235755 (20) [back to overview]Number of Participants Who Were Seizure-free During the DB Phase (Titration and Maintenance Phases)
NCT00235755 (20) [back to overview]Number of Participants Who Were Seizure-free During the Maintenance Phase
NCT00235755 (20) [back to overview]Number of Participants Whose Clinical Laboratory Values Were Deemed an Adverse Event by the Investigator (>=2% in Any Treatment Arm)
NCT00235755 (20) [back to overview]Number of Participants With a >=7% Increase in Body Weight During Weeks 2 and 4 of theTitration Phase and Weeks 6, 8, 12, and 16 of the Maintenance Phase
NCT00235755 (20) [back to overview]Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the DB Phase (Titration and Maintenance Phases) by Indicated Decile Reduction and Increase Categories
NCT00235755 (20) [back to overview]Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the End of DB Phase (Titration and Maintenance Phases) by Indicated Quartile Reduction Categories
NCT00235755 (20) [back to overview]Number of Participants With the Indicated Reduction From Baseline in the 28-day Total Partial Seizure Frequency During the Maintenance Phase
NCT00235755 (20) [back to overview]Quality of Life Assessed by Quality of Life in Epilepsy-Problems Questionnaire (QOLIE-31-P) at BL (Week 0) and Weeks 4, 8, and 16
NCT00235755 (20) [back to overview]Patient Global Impression (PGI) Score at the End of the Maintenance Phase
NCT00235755 (20) [back to overview]Percent Change From Baseline (BL) in the 28-day Total Partial Seizure Frequency During the Maintenance Phase
NCT00235755 (20) [back to overview]Percent Change in the 28-day Total Partial Seizure (PS) Frequency From Baseline (BL) to the End of the Double-blind (DB) Phase (Titration and Maintenance Phases)
NCT00235755 (20) [back to overview]Percentage of Seizure-free Days During the DB Phase (Titration and Maintenance Phases)
NCT00235755 (20) [back to overview]Percentage of Seizure-free Days During the Maintenance Phase
NCT00235755 (20) [back to overview]Change From Baseline in Post-void Residual Urine Volume at Weeks 8 and 16 of the Maintenance Phase
NCT00235755 (20) [back to overview]Number of Participants Classified as Responders and Non-responders During the Maintenance Phase
NCT00235755 (20) [back to overview]Number of Participants Reporting New Seizure Types in the Indicated Categories During the DB Phase (Titration and Maintenance Phases) That Were Not Reported at Baseline
NCT00235755 (20) [back to overview]Number of Participants Who Experienced the Indicated Level of Exacerbation and Reduction in the 28-day Total Partial Seizure Frequency From Baseline During the Maintenance Phase
NCT00235755 (20) [back to overview]Clinical Global Impression-Improvement (CGI-I) Score at the End of the Maintenance Phase
NCT00235755 (20) [back to overview]Number of Participants Who Reported the Indicated Renal and Urinary Disorder Adverse Events at a Frequency Threshold of 2% (in Any Treatment Arm)
NCT00310375 (39) [back to overview]Number of Participants Who Were Seizure Free for Any 12 Continuous Months
NCT00310375 (39) [back to overview]Number of Participants Who Were Seizure Free for Any 6 Continuous Months
NCT00310375 (39) [back to overview]Number of Participants With a Decrease in Confrontational Visual Field From Initial Examination
NCT00310375 (39) [back to overview]Number of Participants With Pigmentation of Non-retinal Ocular Tissue
NCT00310375 (39) [back to overview]Number of Participants With Pigmentation of Retinal Ocular Tissue
NCT00310375 (39) [back to overview]Number of Participants With Resolution of Dermatologist Confirmed Abnormal Discoloration After Discontinuation of Retigabine
NCT00310375 (39) [back to overview]Number of Participants With Treatment-emergent Adverse Events Leading to Withdrawal From Study Drug
NCT00310375 (39) [back to overview]Number of Responders
NCT00310375 (39) [back to overview]Change From Baseline in Heart Rate
NCT00310375 (39) [back to overview]Change From Baseline in Hematology Parameter-Red Blood Cell Count
NCT00310375 (39) [back to overview]Change From Baseline in Hematology Parameters- Bands, Basophils, Eosinophils, Lymphocytes, Metamyelocyte, Monocytes, Neutrophils, Platelets, White Blood Cells Count (WBC)
NCT00310375 (39) [back to overview]Change From Baseline in Overall American Urological Association (AUA) Symptom Index Score
NCT00310375 (39) [back to overview]Change From Baseline in Post-void Residual Bladder Ultrasound Volume
NCT00310375 (39) [back to overview]Change From Baseline in Quality of Life in Epilepsy (QOLIE)-31-P Questionnaire
NCT00310375 (39) [back to overview]Change From Baseline in the 12-lead Electrocardiogram (ECG) Parameter-RR Interval
NCT00310375 (39) [back to overview]Change From Baseline in the 12-lead Electrocardiogram (ECG) Parameters-PR Interval, QRS Duration, Uncorrected QT (uQT) Interval, Corrected QT (Bazett's Correction) Interval (QTcB), Corrected QT (Friedericia's Correction) Interval (QTcF)
NCT00310375 (39) [back to overview]Change From Baseline in Urine Power of Hydrogen (pH)
NCT00310375 (39) [back to overview]Change From Baseline in Urine Specific Gravity
NCT00310375 (39) [back to overview]Change From Baseline in Weight
NCT00310375 (39) [back to overview]Kaplan-Meier Estimate of the Probability of Discontinuation (d/c) From Study Drug
NCT00310375 (39) [back to overview]Number of Participants With Abnormal Pigmentation of Skin, Including the Skin Around the Eyes and the Eyelids, Lips, Nails, or Mucosa
NCT00310375 (39) [back to overview]Number of Participants With Abnormal Results in Physical Examination
NCT00310375 (39) [back to overview]Number of Participants With Abnormal Results of Neurological Examination
NCT00310375 (39) [back to overview]Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of Retigabine
NCT00310375 (39) [back to overview]Number of Participants With Treatment-emergent Serious Adverse Event (SAE) and Adverse Event (AE)
NCT00310375 (39) [back to overview]Time From Discontinuation of Retigabine to Resolution of Abnormal Eye Pigmentation
NCT00310375 (39) [back to overview]Time From Discontinuation of Retigabine to Resolution of All Dermatologist-Confirmed Abnormal Discoloration
NCT00310375 (39) [back to overview]Percentage Change From Baseline in the 28-day Partial Seizure
NCT00310375 (39) [back to overview]Percentage of Seizure-free Days
NCT00310375 (39) [back to overview]Change From Baseline in Blood Pressure
NCT00310375 (39) [back to overview]Change From Baseline in Body Temperature
NCT00310375 (39) [back to overview]Change From Baseline in Chemistry Parameter-Total Protein
NCT00310375 (39) [back to overview]Change From Baseline in Chemistry Parameters -Creatinine, Total Bilirubin (TB), Uric Acid (UA)
NCT00310375 (39) [back to overview]Change From Baseline in Chemistry Parameters-Alkaline Phosphatase (AP), Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST)
NCT00310375 (39) [back to overview]Change From Baseline in Chemistry Parameters-Bicarbonate, Blood Urea Nitrogen (BUN), Calcium, Chloride, Cholesterol, Non-fasting Glucose, Phosphorus, Potassium, Sodium, Urea
NCT00310375 (39) [back to overview]Change From Baseline in Electrocardiogram (ECG) Parameter-QRS Axis
NCT00310375 (39) [back to overview]Change From Baseline in Haematocrit
NCT00310375 (39) [back to overview]Change From Baseline in Haemoglobin
NCT00310375 (39) [back to overview]Number of Participants With a Clinically Significant Decrease in Visual Acuity From Initial Examination
NCT00310388 (37) [back to overview]Change From Baseline in Body Weight
NCT00310388 (37) [back to overview]Change From Baseline in Body Temperature
NCT00310388 (37) [back to overview]Change From Baseline in Bicarbonate, Calcium, Chloride, Cholesterol, Non-fasting Glucose, Phosphorus, Potassium, Sodium and Urea
NCT00310388 (37) [back to overview]Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Platelet Count, White Blood Cells (WBC)
NCT00310388 (37) [back to overview]Change From Baseline in Alkaline Phosphatase (Alk. Phos.), Alanine Amino Transferase (ALT) and Aspartate Amino Transferase (AST)
NCT00310388 (37) [back to overview]Percentage of Seizure Free Days
NCT00310388 (37) [back to overview]Percentage of Participants With Decrease in Confrontation Visual Field From Initial Examination
NCT00310388 (37) [back to overview]Percentage of Participants With 50% Reduction in Seizure Frequency From Baseline Phase of the Parent Study (VRX-RET-E22-302) to Open Label Treatment
NCT00310388 (37) [back to overview]Change From Baseline in Electocardiogram (ECG) Parameters PR, QRS, QT, Corrected QT Interval (QTc) Bazett and QTc Friedericia
NCT00310388 (37) [back to overview]Number of Participants With TEAEs Leading to Treatment Discontinuation (Disc.)
NCT00310388 (37) [back to overview]Number of Participants Who Were Seizure Free for Any 12 Continuous Months
NCT00310388 (37) [back to overview]Number of Participants Who Were Seizure Free for Any 6 Continuous Months
NCT00310388 (37) [back to overview]Number of Participants With Resolution of Dermatologist Confirmed Abnormal Discoloration After Discontinuation of Retigabine
NCT00310388 (37) [back to overview]Change From Baseline in Urine Potential of Hydrogen (pH)
NCT00310388 (37) [back to overview]Change From Baseline in Hematocrit
NCT00310388 (37) [back to overview]Change From Baseline in Hematology Parameter Red Blood Cells (RBC)
NCT00310388 (37) [back to overview]Change From Baseline in Hemoglobin
NCT00310388 (37) [back to overview]Change From Baseline in Post-Void Residual (PVR) Bladder Ultrasound Volume
NCT00310388 (37) [back to overview]Change From Baseline in Quality of Life in Epilepsy-31-Problems (QOLIE-31-P) Questionnaire
NCT00310388 (37) [back to overview]Change From Baseline in Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) Measurements in the Supine and Standing Position
NCT00310388 (37) [back to overview]Change From Baseline in the Urinary Voiding Function [UVF] (Assessed Using the American Urological Association [AUA] Symptom Index)
NCT00310388 (37) [back to overview]Change From Baseline in Total Protein
NCT00310388 (37) [back to overview]Change From Baseline in Urine Specific Gravity
NCT00310388 (37) [back to overview]Kaplan-Meier Estimate of the Probability of Disc. From Study Drug
NCT00310388 (37) [back to overview]Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of Retigabine
NCT00310388 (37) [back to overview]Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (TESAEs)
NCT00310388 (37) [back to overview]Percentage of Participants With a Clinically Significant Decrease (CSD) in Visual Acuity (VA) From Initial Examination
NCT00310388 (37) [back to overview]Percentage of Participants With Abnormal Pigmentation of Skin, Including the Skin Around the Eyes and the Eyelids, Lips, Nails, or Mucosa
NCT00310388 (37) [back to overview]Percentage of Participants With Abnormal Results of Neurological Examination
NCT00310388 (37) [back to overview]Change From Baseline in Heart Rate (HR) Measurements in the Supine and Standing Position
NCT00310388 (37) [back to overview]Percentage of Participants With Abnormal Results of Physical Examination
NCT00310388 (37) [back to overview]Percentage of Participants With Pigmentation of Non-retinal Ocular Tissue (Non-ret. Pig. Abn)
NCT00310388 (37) [back to overview]Percentage of Participants With Retinal Pigmentary Abnormalities (RPA)
NCT00310388 (37) [back to overview]Time From Discontinuation of Retigabine to Resolution of Abnormal Eye Pigmentation
NCT00310388 (37) [back to overview]Time From Discontinuation of Retigabine to Resolution of All Dermatologist-Confirmed Abnormal Discoloration
NCT00310388 (37) [back to overview]Percentage Change in the 28-day Partial Seizure Rate From the Baseline Phase (Obtained During the 8-week Baseline Period of Study VRX-RET-E22-302) to Open-label Treatment.
NCT00310388 (37) [back to overview]Change From Baseline in Creatinine, Total Bilirubin and Uric Acid
NCT00612105 (23) [back to overview]Scores for Reported Health Transition at the End of the MP for All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP
NCT00612105 (23) [back to overview]"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) Subtype Deafferentation Type 2 (D Type 2)"
NCT00612105 (23) [back to overview]"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) Subtype Irritable Nociceptors"
NCT00612105 (23) [back to overview]"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) Subtype Unclassifiable"
NCT00612105 (23) [back to overview]"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) SubtypeDeafferentation Type 1 (D Type 1)"
NCT00612105 (23) [back to overview]Change From Baseline to the End of the MP (Included All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP) in Sleep Quantity
NCT00612105 (23) [back to overview]Primary Endpoint Will be the Change From Baseline in Average Pain Score Over the Last 7 Days of the Maintenance Phase.
NCT00612105 (23) [back to overview]"Number of Participants With the Indicated Responses at Baseline to the Questions of Is it Cool? and Is it Painful? in an Assessment of Cold Threshold and Allodynia"
NCT00612105 (23) [back to overview]"Number of Participants With the Indicated Responses at the End of the MP to the Question: How Painful Was the Affected Side Compared to the Opposite Side? in an Assessment of Tactile Allodynia"
NCT00612105 (23) [back to overview]"Number of Participants With the Indicated Responses at the End of the MP to the Questions of Is it Cool? and Is it Painful? in an Assessment of Cold Threshold and Allodynia"
NCT00612105 (23) [back to overview]"Number of Subjects With the Indicated Responses at Baseline to the Questions: How Sharp Was the Affected Side Compared to the Opposite Side? and How Painfule Was the Affected Side Compared to the Opposite Side? in an Assessment of Hyperalgesia"
NCT00612105 (23) [back to overview]Change From Baseline in Pain Intensity Score at Each Week During the Maintenance Phase (MP)
NCT00612105 (23) [back to overview]Change From Baseline to the End of the MP (Included All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP) in Medical Outcomes Study (MOS) Sleep Scale Scores
NCT00612105 (23) [back to overview]Change From Baseline to Weeks 2 and 4 of the Maintenance Phase in Mean In-clinic Pain Assessment
NCT00612105 (23) [back to overview]Mean Score on the Treatment Satisfaction Questionnaire for Medication (TSQM) at the End of the Maintenance Phase
NCT00612105 (23) [back to overview]Number of Participants Classified as Responders, With a 50% and 30% Pain Reduction From Baseline to the Last 7 Days of the Maintenance Phase
NCT00612105 (23) [back to overview]Number of Participants With the Indicated Change From Baseline to the End of the Maintenance Phase in Optimal Sleep Based on the Sleep Quantity Domain of the MOS Sleep Scale
NCT00612105 (23) [back to overview]Number of Rescue Medication Tablets Taken Per Day During the Maintenance Phase (MP)
NCT00612105 (23) [back to overview]Scores on the Brief Pain Inventory-Short Form (BPI-SF) at the End of the MP for All Participants Who Completed Week-4 of the MP and Who Terminated Early During the MP
NCT00612105 (23) [back to overview]Scores on the Medical Outcomes Short Form-36 (SF-36) at the End of the MP for All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP
NCT00612105 (23) [back to overview]"Number of Participants With Indicated Responses at the End of the MP to the Questions: How Sharp Was the Affected Side Compared to the Opposite Side? and How Painful Was the Affected Side Compared to the Opposite Side? in an Assessment of Hyperalgesia"
NCT00612105 (23) [back to overview]"Number of Participants With the Indicated Responses at Baseline to the Question: How Painful Was the Affected Side Compared to the Opposite Side? in an Assessment of Tactile Allodynia"
NCT00612105 (23) [back to overview]Number of Participants With the Indicated Overall Patient Global Impression of Change (PGIC)
NCT01227902 (17) [back to overview]Change From Baseline in the PGI-C Score: Current Ability to do the Things You Need to do
NCT01227902 (17) [back to overview]Change From Baseline in the PGI-C Score: Current Ability to do the Things You Want to do
NCT01227902 (17) [back to overview]Change From Baseline in the PGI-C Score: Epilepsy-related Worry
NCT01227902 (17) [back to overview]Change From Baseline in the SF-36v2 Mental Component Summary Score at Week 20/Early Withdrawal
NCT01227902 (17) [back to overview]Change From Baseline in the SF-36v2 Physical Component Summary Score at Week 20/Early Withdrawal
NCT01227902 (17) [back to overview]Functional Status Diary (FSD): Percent Change From Baseline in Epilepsy-related Limitation of Ability to do What You Needed to
NCT01227902 (17) [back to overview]Functional Status Diary (FSD): Percent Change From Baseline in Epilepsy-related Limitation of Ability to do What You Wanted to
NCT01227902 (17) [back to overview]Functional Status Diary (FSD): Percent Change From Baseline in Epilepsy-related Worry
NCT01227902 (17) [back to overview]Number of Participants With a >=50% Reduction in Partial-onset Seizure (POS) Frequency From Baseline
NCT01227902 (17) [back to overview]Percent Change From Baseline in Functional Status: Percentage of Days With no Missed Work or School Time
NCT01227902 (17) [back to overview]Percent Change From Baseline in Partial-onset Seizure Frequency
NCT01227902 (17) [back to overview]Change From Baseline in the Short Form 36 Health Survey, Version 2 (SF-36v2) Domain Scores at Week 20/Early Withdrawal
NCT01227902 (17) [back to overview]Number of Participants With a >=25%, >=75%, or 100% Reduction in Partial-onset Seizure Frequency From Baseline
NCT01227902 (17) [back to overview]Number of Participants With the Indicated Reduction or Increase From Baseline in Partial-onset Seizure Frequency
NCT01227902 (17) [back to overview]Number of Participants With the Indicated Response for the Current Ability to do the Things You Need to do Component of the PGI-C Score
NCT01227902 (17) [back to overview]Number of Participants With the Indicated Response for the Current Ability to do the Things You Want to do Component of the PGI-C Score
NCT01227902 (17) [back to overview]Number of Participants With the Indicated Response for the Epilepsy-related Worry Component of the Patient Global Impression of Change (PGI-C) Score
NCT01336621 (43) [back to overview]Time From Discontinuation of Retigabine to Resolution of All Dermatologist-confirmed Abnormal Discoloration
NCT01336621 (43) [back to overview]Number of Participants Experiencing New Seizure Types
NCT01336621 (43) [back to overview]Duration of Retigabine Exposure
NCT01336621 (43) [back to overview]Number of Participants Experiencing an Increase in 28-day Partial-onset Seizure Frequency From Baseline
NCT01336621 (43) [back to overview]Number of Participants Experiencing Worsening of Seizures
NCT01336621 (43) [back to overview]Number of Participants With a Clinically Significant Decrease in Visual Acuity From Initial Examination
NCT01336621 (43) [back to overview]Number of Participants With Decrease in Confrontational Visual Field From Initial Examination
NCT01336621 (43) [back to overview]Number of Participants With Pigmentation of Non-retinal Ocular Tissue(s)
NCT01336621 (43) [back to overview]Number of Participants With Resolution of Dermatologist Confirmed Abnormal Discoloration After Discontinuation of Retigabine
NCT01336621 (43) [back to overview]Number of Participants With Retinal Pigmentary Abnormalities
NCT01336621 (43) [back to overview]Number of Participants Withdrawn Due to TEAEs
NCT01336621 (43) [back to overview]Percent Change From Baseline in 28-day Partial-onset Seizure Frequency
NCT01336621 (43) [back to overview]Change From Baseline in Absolute Basophils, Absolute Eosinophils, Absolute Lymphocytes, Absolute Monocytes, Absolute Total Neutrophils, Platelet Count and WBC Count
NCT01336621 (43) [back to overview]Change From Baseline in Albumin and Total Protein
NCT01336621 (43) [back to overview]Change From Baseline in Alk. Phosphatase, ALT, AST, Creatine Kinase and LD Levels
NCT01336621 (43) [back to overview]Change From Baseline in BUN/Creatinine Ratio
NCT01336621 (43) [back to overview]Change From Baseline in Calcium, Chloride, CO2, Glucose, Potassium, Magnesium, Sodium and BUN
NCT01336621 (43) [back to overview]Change From Baseline in Direct Bilirubin, Total Bilirubin and Creatinine
NCT01336621 (43) [back to overview]Change From Baseline in ECG Parameter Including PR Interval, QRS Duration, Uncorrected QT Interval, Corrected QT by Bazett's Formula (QTcB), Corrected QT by Fridericia's Formula (QTcF) and RR Interval
NCT01336621 (43) [back to overview]Change From Baseline in Electrocardiogram (ECG) Parameter Including HR
NCT01336621 (43) [back to overview]Change From Baseline in Hematocrit Levels
NCT01336621 (43) [back to overview]Change From Baseline in Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Levels
NCT01336621 (43) [back to overview]Change From Baseline in Mean Corpuscle Hemoglobin (MCH) Levels
NCT01336621 (43) [back to overview]Change From Baseline in Mean Corpuscle Volume (MCV) and Mean Platelet Volume (MPV) Levels
NCT01336621 (43) [back to overview]Change From Baseline in Percent Basophils, Percent Eosinophils, Percent Lymphocytes, Percent Monocytes, Percent Neutrophils and RBC Distribution Width (RDW) Levels
NCT01336621 (43) [back to overview]Change From Baseline in Post-Void Residual (PVR) Bladder Ultrasound Urine Volume
NCT01336621 (43) [back to overview]Change From Baseline in RBC Count
NCT01336621 (43) [back to overview]Change From Baseline in Urine Albumin Creatinine Ratio
NCT01336621 (43) [back to overview]Change From Baseline in Urine Albumin Levels
NCT01336621 (43) [back to overview]Change From Baseline in Urine Creatinine Levels
NCT01336621 (43) [back to overview]Changes From Baseline in American Urological Association Symptom Scale (AUA SS) Score
NCT01336621 (43) [back to overview]Number of Participants Experiencing a 0 to <25, 25 to <50, 50 to <75 and 75 to 100 Percent Reduction in 28 Day POS Frequency From Baseline
NCT01336621 (43) [back to overview]Number of Participants Who Remained Seizure-free
NCT01336621 (43) [back to overview]Number of Participants With Abnormal Discoloration of Skin
NCT01336621 (43) [back to overview]Number of Participants With AEs and SAEs: All SFUCP Subjects
NCT01336621 (43) [back to overview]Number of Participants With Clinical Chemistry Parameters of PCC
NCT01336621 (43) [back to overview]Number of Participants With Hematology Parameters of PCC
NCT01336621 (43) [back to overview]Number of Participants With Potential Clinical Concern (PCC) Values of Change From Baseline in Vital Signs and Weight
NCT01336621 (43) [back to overview]Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of Retigabine
NCT01336621 (43) [back to overview]Number of Participants With Suicidal Ideation or Behavior Assessed by the Columbia Suicide Severity Rating Scale (C-SSRS) Score
NCT01336621 (43) [back to overview]Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious AEs (TESAEs): Safety Population
NCT01336621 (43) [back to overview]Number of Participants With Urinalysis Parameters of PCC
NCT01336621 (43) [back to overview]Time From Discontinuation of Retigabine to Resolution of Abnormal Eye Pigmentation
NCT01494584 (26) [back to overview]Change From Baseline in Mean Corpuscle Volume at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Change From Baseline in Calcium, Chloride, Carbon Dioxide Content/Bicarbonate, Glucose, Potassium, Sodium, Inorganic Phosphorus, and Urea/Blood Urea Nitrogen (BUN) at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Change From Baseline in Direct Bilirubin, Total Bilirubin, Creatinine, and Uric Acid at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Number of Participants With the Indicated Urinalysis Parameter Dipstick Test Results From Screening to Follow-up
NCT01494584 (26) [back to overview]Number of Participants With the Indicated Neurological Abnormality
NCT01494584 (26) [back to overview]Number of Participants With Abnormal Electrocardiogram (ECG) Findings
NCT01494584 (26) [back to overview]Maximum Observed Concentration (Cmax) and Pre-dose (Trough) Concentration at the End of the Dosing Interval (Ctau) Following Oral Administration of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]Change From Baseline in Heart Rate (HR)
NCT01494584 (26) [back to overview]Change From Baseline in Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at the Indicated Time Points
NCT01494584 (26) [back to overview]Apparent Clearance (CL/F) Following Oral Administration of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]Apparent Volume of Distribution (Vd/F) Following Oral Administration of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]Area Under the Concentration-time Curve From Time Zero (Pre-dose) to the Last Time of Quantifiable Concentration (AUC [0-t]) for the N-acetyl Metabolite of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]Change From Baseline in Hematocrit at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Change From Baseline in Mean Corpuscle Hemoglobin at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Change From Baseline in Hemoglobin and Mean Corpuscle Hemoglobin Concentration at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Change From Baseline in Post Void Residual Ultrasound at Day 21
NCT01494584 (26) [back to overview]Change From Baseline in Red Blood Cell Count at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Number of Participants With Any Adverse Event (AE)
NCT01494584 (26) [back to overview]Percent Change From Baseline in 28-day Seizure Frequency Rate
NCT01494584 (26) [back to overview]Plasma Half Life at Steady State (t1/2) Following Oral Administration of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]Pre-dose (Trough) Concentration at the End of the Dosing Interval (Ctau) for the N-acetyl Metabolite of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]The Area Under the Plasma Concentration-time Curve Over the Dosing Interval (AUC[0-tau]) Following Oral Administration of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]Time to Maximum Concentration (Tmax) Following Oral Administration of Ezogabine/Retigabine
NCT01494584 (26) [back to overview]Change From Baseline in Albumin and Total Protein at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Change From Baseline in Alkaline Phosphatase, Alanine Amino Transferase, Aspartate Amino Transferase, and Gamma Glutamyl Transferase at Day 7 Post Each Up-titration
NCT01494584 (26) [back to overview]Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Total Neutrophils (Total ANC [Total Absolute Neutrophil Count]), Platelet Count, and White Blood Cell Count at Day 7 Post Each Up-titration
NCT01607346 (12) [back to overview]Change From Baseline in Maximum Flow Rate (Qmax) at Visit 5.
NCT01607346 (12) [back to overview]Frequency of Micturition as Recorded on the Voiding Diary for 2 Days Prior to Each Visit
NCT01607346 (12) [back to overview]Percent Change From Baseline in Qmax at Visits 3, 4, 5 and 6
NCT01607346 (12) [back to overview]Volume Voided as Recorded on the Voiding Diary for 2 Days Prior to Each Post-baseline Visit
NCT01607346 (12) [back to overview]Change From Baseline in Flow Time at Visits 3, 4, 5 and 6
NCT01607346 (12) [back to overview]Change From Baseline in American Urological Association Symptom Index (AUA SI) at Visits 3, 4, 5 and 6
NCT01607346 (12) [back to overview]Change From Baseline in Average Flow Rate (Qmean) at Visits 3, 4, 5 and 6
NCT01607346 (12) [back to overview]Change From Baseline in Maximum Flow Rate (Qmax) at Visits 3, 4 and 6
NCT01607346 (12) [back to overview]Change From Baseline in Percentage Residual Urinary Volume (RUV) at Visits 3, 4, 5 and 6
NCT01607346 (12) [back to overview]Change From Baseline in PVR Volume by Bladder Ultrasound at Visits 3, 4, 5 and 6
NCT01607346 (12) [back to overview]Change From Baseline in Time to Maximum Flow at Visits 3, 4, 5 and 6
NCT01607346 (12) [back to overview]Change From Baseline in Voided Volume (VV) at Visits 3, 4, 5 and 6
NCT01648101 (10) [back to overview]Number of Participants Who Were Seizure Free During the MP, ITT Population
NCT01648101 (10) [back to overview]Percentage of Seizure-free Days in the TrP
NCT01648101 (10) [back to overview]Number of Placebo and Retigabine 600 mg Responders During the MP
NCT01648101 (10) [back to overview]Number of Placebo and Retigabine 900 mg Responders During the Maintenance Phase (MP)
NCT01648101 (10) [back to overview]Percentage of Seizure-free Days in the MP
NCT01648101 (10) [back to overview]Number of Responders From the BP to the Treatment Phase (TrP)
NCT01648101 (10) [back to overview]Percent Change From Baseline in the 28-day Total POS Frequency During the TrP
NCT01648101 (10) [back to overview]Percent Change From Baseline in the 28-day Total POS Frequency During the MP
NCT01648101 (10) [back to overview]Incidence of New Seizure Types During the TrP in Participants Without a History of the Indicated Seizure Types at Baseline
NCT01648101 (10) [back to overview]Number of Participants Who Were Seizure Free During the TrP
NCT01668654 (6) [back to overview]Number of Participants With Sexual Maturation Based on the Tanner Stage I to Stage V of Puberty in Participants <=18 Years Old Throughout the Study
NCT01668654 (6) [back to overview]Number of Days of Exposure to Retigabine/Ezogabine TID by Individual Participant
NCT01668654 (6) [back to overview]Number of Participants With Vital Signs Outside the Pre-determined Clinically Important Findings or Outside the Normal Ranges at Any Time During the Study
NCT01668654 (6) [back to overview]Number of Participants With Abnormal Clinically Significant ECG Findings Based on Investigator Judgment at Anytime During the Study
NCT01668654 (6) [back to overview]Number of Participants With AEs Leading to Withdrawal
NCT01668654 (6) [back to overview]Number of Participants (Par.) With Any Adverse Event (AE) or Serious Adverse Event (SAE) During the Treatment Period
NCT01721317 (2) [back to overview]Number of Participants With the Indicated Assessment Events of Suicidal Behavior, Suicidal Ideation or Non-suicidal Self Injurious Behavior Via the Columbia Suicide Severity Rating Scale (C-SSRS)
NCT01721317 (2) [back to overview]Number of Participants With Early Study Discontinuation
NCT01777139 (35) [back to overview]Change From Baseline in Alanine Amino Transferase (ALT), Alkaline Phosphatase (Alk. Phosph.), Aspartate Aminotransferase (AST), Creatine Kinase (CK), Gamma Glutamyl Transferase (GGT) and Lactate Dehydrogenase (LD)
NCT01777139 (35) [back to overview]Change From Baseline in Albumin and Total Protein
NCT01777139 (35) [back to overview]Number of Participants Who Discontinued From RTG
NCT01777139 (35) [back to overview]Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Platelet Count, Total Neutrophils, and White Blood Cell Count (WBC)
NCT01777139 (35) [back to overview]Change From Baseline in Blood Urea Nitrogen (BUN)/Creatinine Ratio
NCT01777139 (35) [back to overview]Change From Baseline in Calcium, Carbon Dioxide (CO2) Content/Bicarbonate (Bicarb), Chloride, Glucose, Magnesium, Potassium, Sodium, Urea/BUN
NCT01777139 (35) [back to overview]Change From Baseline in Creatinine, Direct Bilirubin, Total Bilirubin, and Uric Acid
NCT01777139 (35) [back to overview]Change From Baseline in Hematocrit
NCT01777139 (35) [back to overview]Change From Baseline in Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC)
NCT01777139 (35) [back to overview]Change From Baseline in Mean Corpuscle Hemoglobin (MCH) Level
NCT01777139 (35) [back to overview]Change From Baseline in Mean Corpuscle Volume (MCV) and Mean Platelet Volume (MPV)
NCT01777139 (35) [back to overview]Change From Baseline in Post-void Residual (PVR) Bladder Ultrasound Volumes
NCT01777139 (35) [back to overview]Change From Baseline in Red Blood Cell (RBC) Count
NCT01777139 (35) [back to overview]Change From Baseline in Red Cell Distribution Width (RDW)
NCT01777139 (35) [back to overview]Change From Baseline in Urine Albumin/Creatinine Ratio
NCT01777139 (35) [back to overview]Change From Baseline in Urine Creatinine Concentration
NCT01777139 (35) [back to overview]Number of Participants With Abnormal Urinalysis Values (Categorical Data)
NCT01777139 (35) [back to overview]Number of Participants With PCC Values of Change From Baseline for Body Weight
NCT01777139 (35) [back to overview]Number of Participants With PCC Values of Change From Baseline for Electrocardiogram (ECG) Parameters
NCT01777139 (35) [back to overview]Number of Participants With Potential Clinical Concern (PCC) Values of Change From Baseline for Vital Signs
NCT01777139 (35) [back to overview]Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of RTG
NCT01777139 (35) [back to overview]Number of Participants With Suicidal Ideation or Behavior During Treatment Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)
NCT01777139 (35) [back to overview]Number of Participants With Treatment Emergent (TE) Serious Adverse Events (SAEs) and Non-SAEs
NCT01777139 (35) [back to overview]Potential of Hydrogen (pH) of Urine at Indicated Time Points
NCT01777139 (35) [back to overview]Specific Gravity of Urine at Indicated Time Points
NCT01777139 (35) [back to overview]Change From Baseline in American Urological Association (AUA) Symptom Scale Scores
NCT01777139 (35) [back to overview]Number of Participants With Resolution of Dermatologist-confirmed Abnormal Discoloration After Discontinuation of RTG
NCT01777139 (35) [back to overview]Percent Change From Baseline in 28-day Total POS Frequency
NCT01777139 (35) [back to overview]Percentage of Participants With a Clinically Significant Decrease in Visual Acuity From Initial Examination
NCT01777139 (35) [back to overview]Percentage of Participants With Decrease in Confrontational Visual Field From Initial Examination
NCT01777139 (35) [back to overview]Percentage of Participants With Dermatologist-confirmed Abnormal Discoloration
NCT01777139 (35) [back to overview]Percentage of Participants With Pigmentation of Non-retinal Ocular Tissues
NCT01777139 (35) [back to overview]Percentage of Participants With Retinal Pigmentary Abnormalities
NCT01777139 (35) [back to overview]Percentage of Participants With TEAEs Leading to Study Discontinuation
NCT01777139 (35) [back to overview]Percentage of Responders to POS Frequency
NCT02149836 (4) [back to overview]Columbia-Suicide Severity Rating Scale (C-SSRS)
NCT02149836 (4) [back to overview]Patient Rated Inventory of Side Effects (PRISE)
NCT02149836 (4) [back to overview]Changes in Reward System Activation After Treatment With Ezogabine
NCT02149836 (4) [back to overview]Montgomery-Asberg Depression Rating Scale Comparison to Baseline
NCT02450552 (12) [back to overview]Number of Participants Who Tolerate Study Drug
NCT02450552 (12) [back to overview]Hand Held Dynamometry Force Measurement for Abductor Pollicis Brevis
NCT02450552 (12) [back to overview]Proportion of Days With Fasciculations
NCT02450552 (12) [back to overview]Muscle Cramping Frequency
NCT02450552 (12) [back to overview]Change in Strength Duration Time Constant
NCT02450552 (12) [back to overview]Change in Short-interval Intracortical Inhibition (SICI) Measured by Transcranial Magnetic Stimulation (TMS)
NCT02450552 (12) [back to overview]Change in Resting Motor Evoked Potential (MEP) Threshold (Prespecified Secondary Outcome of Primary Importance)
NCT02450552 (12) [back to overview]Change in Recovery Cycle
NCT02450552 (12) [back to overview]Change in MEP Amplitude
NCT02450552 (12) [back to overview]Change in Intracortical Facilitation
NCT02450552 (12) [back to overview]Change in Duration of Cortical Silent Period
NCT02450552 (12) [back to overview]Change in Electrotonus
NCT03043560 (9) [back to overview]Clinical Global Impression - Severity (CGI-S)
NCT03043560 (9) [back to overview]Montgomery-Asberg Depression Rating Scale (MADRS)
NCT03043560 (9) [back to overview]Specific Loss of Interest and Pleasure Scale (SLIPS)
NCT03043560 (9) [back to overview]Temporal Experience of Pleasure Scale (TEPS)
NCT03043560 (9) [back to overview]World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0)
NCT03043560 (9) [back to overview]Anticipatory and Consummatory Interpersonal Pleasure Scale (ACIPS)
NCT03043560 (9) [back to overview]Change in Snaith-Hamilton Pleasure Scale (SHAPS)
NCT03043560 (9) [back to overview]Change in Ventral Striatum (VS) Activation
NCT03043560 (9) [back to overview]Clinical Global Impression - Improvement (CGI-I)

Number of Participants Reporting New Seizure Types in the Indicated Categories During the DB Phase (Titration and Maintenance Phases) That Were Not Reported at Baseline

New seizure types included those seizures which were not reported by any participant at Baseline. (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Week 1 through Week 18

,
Interventionparticipants (Number)
No new seizure typePartial seizures without motor signsPartial evolving to secondarily generalizedComplex partial seizuresPartial seizures with motor signsFlurriesTonic-clonic seizuresAtonic seizures
Placebo - DB Phase (Titration + Maintenance)33127511301
Retigabine DB Phase (Titration + Maintenance)421712117110

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Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the End of DB Phase (Titration and Maintenance Phases) by Indicated Quartile Reduction Categories

"Participants who experienced a reduction from Baseline in the 28-day total partial seizure frequency were categorized as having a reduction of 75-100%, 50-<75%, 25-<50%, or <25%, in addition to having no reduction. This quartile cutting was specified in the study protocol. Participants without any post-baseline data were included in the No reduction category." (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Week 1 through Week 18

,
Interventionparticipants (Number)
75% to 100% reduction50% to <75% reduction25% to <50% reduction>0 to <25% reductionNo reduction
Placebo - DB Phase (Titration + Maintenance)621373355
Retigabine DB Phase (Titration + Maintenance)2741202639

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Number of Participants Who Experienced the Indicated Level of Exacerbation and Reduction in the 28-day Total Partial Seizure Frequency From Baseline During the Maintenance Phase

Participants who experienced an exacerbation from Baseline in the 28-day total partial seizure frequency were categorized as having a 0-25% or a >25% increase (EMEA endpoint). The number of participants experiencing a >0% reduction from Baseline in the 28-day total partial seizure frequency are also presented. (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Week 7 through Week 18

,
Interventionparticipants (Number)
0% to 25% increase>=25% increase>0% reduction
Placebo - Maintenance Phase202196
Retigabine - Maintenance Phase41699

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Number of Participants Who Reported the Indicated Renal and Urinary Disorder Adverse Events at a Frequency Threshold of 2% (in Any Treatment Arm)

A summary of the adverse events classified as renal or urinary disorders and in which at least 2% (rounded to an integer) of participants in any treatment arm reported during the study is presented. (NCT00232596)
Timeframe: Week 1 through Week 24

,,,
Interventionparticipants (Number)
Urinary hesitationDysuriaChromaturiaPolyuriaNephrolithiasisHematuriaUrinary retention
Placebo - DB Phase (Titration and Maintenance)1201012
Placebo (DB Phase) and Retigabine (Transition Phase)2200022
Retigabine - DB Phase (Titration and Maintenance)9874421
Retigabine (DB Phase) and Retigabine (Transition Phase)0100000

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Number of Participants Who Were Responders and Non-responders in the DB Phase

Responders were participants with at least a 50% reduction in the 28-day total partial seizure frequency in the DB Phase as compared to the Baseline period. Participants without any post-baseline data were considered non-responders. (NCT00232596)
Timeframe: Week 1 through Week 18

,
Interventionparticipants (Number)
RespondersNon-responders
Placebo - DB Phase (Titration + Maintenance)27125
Retigabine - DB Phase (Titration + Maintenance)6885

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Number of Participants Who Were Responders and Non-responders in the Maintenance Phase

Responders were participants with at least a 50% reduction in the 28-day total partial seizure frequency in the Maintenance Phase as compared to the Baseline period. (NCT00232596)
Timeframe: Week 7 through Week 18

,
Interventionparticipants (Number)
RespondersNon-responders
Placebo - Maintenance Phase31106
Retigabine - Maintenance Phase6653

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Number of Participants Who Were Seizure-free During the DB Phase (Titration and Maintenance Phases)

Participants were considered to be seizure-free if they had not reported any seizures during the DB treatment period (Weeks 1-18). For a participant to be seizure free during the DB Phase, the participant had to be seizure free both Week 7 to Week 18 and Week 1 to Week 6. A participant could be seizure free Week 7 to Week 18 (during the Maintenance Phase), but not seizure free Week 1 to Week 6. Hence, there are fewer participants being reported as seizure free from Week 1 to Week 18 than from Week 7 to Week 18. (NCT00232596)
Timeframe: Week 1 through Week 18

,
Interventionparticipants (Number)
Seizure freeNot seizure free
Placebo - DB Phase (Titration + Maintenance)0150
Retigabine DB Phase (Titration + Maintenance)3148

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Number of Participants Who Were Seizure-free During the Maintenance Phase

Participants were considered to be seizure-free if they had not reported any seizures during the Maintenance Phase. (NCT00232596)
Timeframe: Week 7 through Week 18

,
Interventionparticipants (Number)
Seizure freeNot seizure free
Placebo - Maintenance Phase2135
Retigabine - Maintenance Phase9110

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Number of Participants Whose Clinical Laboratory Values Were Deemed an Adverse Event by the Investigator (>=2% in Any Treatment Arm)

Clinically important changes in laboratory values were to be reported as an adverse event if they met one of the following criteria: (1) intervention required; (2) change in dose of study drug required; (3) other treatment/therapy required; (4) association with other diagnoses. (NCT00232596)
Timeframe: Week 1 through Week 24

,,,
Interventionparticipants (Number)
Urine analysis abnormalBacteria urineHematology test abnormalUrinary sediment present
Placebo - DB Phase (Titration and Maintenance)3101
Placebo (DB Phase) and Retigabine (Transition Phase)3000
Retigabine - DB Phase (Titration and Maintenance)4110
Retigabine (DB Phase) and Retigabine (Transition Phase)2222

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Number of Participants With a >=7% Increase in Body Weight During Weeks 2, 4, and 6 of theTitration Phase and Weeks 7, 8, 10, 14, and 18 of the Maintenance Phase

The number of participants with recorded weight gain of >=7% over their baseline weight was measured. (NCT00232596)
Timeframe: Weeks 2, 4, 6 of Titration Phase and Weeks 7, 8, 10, 14, and 18 of Maintenance Phase

,
Interventionparticipants (Number)
Titration Phase, Week 2, n=149, 150Titration Phase, Week 4, n=145, 144Titration Phase, Week 6, n=146, 129Maintenance Phase, Week 7, n=130, 121Maintenance Phase, Week 8, n=135, 128Maintenance Phase, Week 10, n=136, 119Maintenance Phase, Week 14, n=137, 109Maintenance Phase, Week 18, n=127, 92
Placebo - DB Phase (Titration + Maintenance)00121334
Retigabine DB Phase (Titration + Maintenance)556910151817

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Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the End of the DB Phase (Titration and Maintenance Phases) by Indicated Decile Reduction and Increase Categories

Participants who experienced a reduction from Baseline in the 28-day total partial seizure frequency were categorized in decile cutting, i.e., reduction categories of 90-100%, 80-<90%, 70-<80%, 60-<70%, 50-<60%, 40-<50%, 30-<40%, 20-<30%, 10-<20%, >0-<10%, and increase categories of 0-10%, >10-20%, >20-30%, >30% (FDA endpoint). Participants without any post-baseline data were included in the 0-10% increase category. (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Week 1 through Week 18

,
Interventionparticipants (Number)
Reduction: 90% to 100%Reduction: 80% to <90%Reduction: 70% to <80%Reduction: 60% to <70%Reduction: 50% to <60%Reduction: 40% to <50%Reduction: 30% to <40%Reduction: 20% to <30%Reduction: 10% to <20%Reduction: >0% to <10%Increase: 0% to 10%Increase: >10% to 20%Increase: >20% to 30%Increase: >30%
Placebo - DB Phase (Titration + Maintenance)05471111131913141412425
Retigabine DB Phase (Titration + Maintenance)121110201510612108105420

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Number of Participants With the Indicated Reduction From Baseline in the 28-day Total Partial Seizure Frequency During the Maintenance Phase

Participants who experienced a reduction from Baseline in the 28-day total partial seizure frequency were categorized as having a >75%, a 50-75%, or a <50% reduction, in addition to having no reduction (EMEA endpoint). (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Week 7 through Week 18

,
Interventionparticipants (Number)
>75% reduction50% to 75% reduction>0 to <50% reductionNo reduction
Placebo - Maintenance Phase13186541
Retigabine - Maintenance Phase37293320

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Quality of Life (QOL) Assessed by QOL in Epilepsy-Problems Questionnaire (QOLIE-31-P) at Baseline (Week 0) and Weeks 6, 10, and 18

The QOLIE-31-P is a 31-item questionnaire evaluating a participant's QOL perception in 7 domains: seizure worry, emotional well being, energy/fatigue, cognitive functioning, medication effects, social functioning, overall QOL. Precoded numeric values for some domains are such that a higher number reflects a more favorable health state; others are such that a higher number reflects a less favorable state. Precoded values are first converted to 0-100 point scores; higher converted scores always reflect better QOL. The overall score is derived by weighting and then summing the 7 domain scores. (NCT00232596)
Timeframe: End of Baseline (Week 0), Weeks 6, 10, and 18

,
Interventionscores on a scale (Mean)
Baseline (Week -7 through Week 0), n=139, 137Week 6 (Titration Phase), n=127, 108Week 10 (Maintenance Phase), n=121, 102Week 18 (Maintenance Phase), n=116, 85
Placebo - DB Phase (Titration + Maintenance)52.655.257.957.3
Retigabine DB Phase (Titration + Maintenance)55.655.756.253.8

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Clinical Global Impression-Improvement (CGI-I) Score at the End of the Maintenance Phase

Clinical Global Impression of Improvement (CGI-I) is a 7-point scale that requires the clinician to assess how much the participant's illness has improved or worsened relative to a baseline state at the beginning of the treatment. Scores on the scale are rated as: 1, very much improved; 2, much improved; 3, minimally improved; 4, no change; 5, minimally worse; 6, much worse; or 7, very much worse. (NCT00232596)
Timeframe: Week 18/end of treatment phase

Interventionscores on a scale (Mean)
Placebo - Maintenance Phase3.2
Retigabine - Maintenance Phase2.7

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Patient Global Impression (PGI) Score at the End of the Maintenance Phase

PGI is a participant-rated scale of improvement that was administered at the end of the Maintenance Phase in order to assess the participant's impression of his or her own improvement. PGI assessments were scored using a 7-point scale: 1, very much improved; 2, much improved; 3, minimally improved; 4, no change; 5, minimally worse; 6, much worse; or 7, very much worse. (NCT00232596)
Timeframe: Week 18/end of treatment phase

Interventionscores on a scale (Mean)
Placebo - Maintenance Phase2.9
Retigabine - Maintenance Phase2.9

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Percent Change From Baseline (BL) in the 28-day Total Partial Seizure Frequency During the Maintenance Phase

28-day total partial seizure frequency in the BL period = (No. of total partial seizures reported in the BL period divided by the No. of days of available total partial seizure data in the BL period) x 28 days. 28-day total partial seizure frequency in the Maintenance Phase = (No. of total partial seizures reported in the Maintenance Phase divided by the No. of days of available total partial seizure data in the same phase) x 28 days. Percent change = (value in the Maintenance Phase minus value at BL divided by the BL value) x 100%. Negative values indicate a reduction in seizure frequency. (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Week 7 through Week 18

Interventionpercent change in seizure frequency (Median)
Placebo - Maintenance Phase-18.9
Retigabine - Maintenance Phase-54.5

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Percent Change in the 28-day Total Partial Seizure (PS) Frequency From Baseline (BL) to the End of the Double-blind (DB) Phase (Titration and Maintenance Phases)

28-day total PS (PSs [also called focal seizures] are seizures limited to a specific area of the brain) frequency in the BL period = (Number [No.] of total PSs reported in the BL period divided by the No. of days of available total PS data in the BL period) x 28 days. 28-day total PS frequency in the DB period = (No. of total PSs reported in the DB period divided by the No. of days of available total PS data in the DB period) x 28 days. Percent change = ([value in the DB period minus value at BL] divided by the BL value) x 100%. Negative values indicate a reduction in seizure frequency. (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Week 1 through Week 18

Interventionpercent change in seizure frequency (Median)
Placebo - DB Phase (Titration + Maintenance)-17.5
Retigabine - DB Phase (Titration + Maintenance)-44.3

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Percentage of Seizure-free Days During the DB Phase (Titration and Maintenance Phases)

A seizure-free day was a day without any seizures. For a participant to be seizure free during the DB Phase, the participant had to be seizure free both Week 7 to Week 18 and Week 1 to Week 6. A participant could be seizure free Week 7 to Week 18 (during the Maintenance Phase), but not seizure free Week 1 to Week 6. Hence, there are fewer participants being reported as seizure free from Week 1 to Week 18 than from Week 7 to Week 18. The percentage of seizure-free days was calculated as the total number of days without seizures in the DB period divided by the number of days in DB period x 100%. (NCT00232596)
Timeframe: Week 1 through Week 18

Interventionpercentage of days (Median)
Placebo - DB Phase (Titration + Maintenance)77.3
Retigabine DB Phase (Titration + Maintenance)84.1

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Percentage of Seizure-free Days During the Maintenance Phase

A seizure-free day was a day without any seizures. The percentage of seizure-free days was calculated as the total number of days without seizures in the DB period divided by the number of days in the DB period x 100%. (NCT00232596)
Timeframe: Week 7 through Week 18

Interventionpercentage of days (Median)
Placebo - Maintenance Phase78.2
Retigabine - Maintenance Phase86.9

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Change From Baseline in Post-void Residual Urine Volume at Weeks 10 and 18 of the DB Treatment Phase

Post-void residual (PVR) urine refers to the amount of urine remaining in the bladder after normal urination. To investigate the possible effects of retigabine on bladder function, all participants underwent post-void residual bladder ultrasound at Baseline and during the Maintenance Phase. The PVR bladder ultrasound was performed by a urologist, a qualified ultrasound technician, or a qualified study nurse who was certified to do PVR bladder ultrasound. Change from Baseline in PVR residual volume was calculated as the values at Week 10 and Week 18 minus the value at Baseline. (NCT00232596)
Timeframe: Baseline (Week -7 through Week 0), Weeks 10 and 18

,
Interventionmilliliters (Median)
Week 10, n=111, 100Week 18, n=95, 76
Placebo - DB Phase (Titration and Maintenance)-1.0-3.0
Retigabine - DB Phase (Titration and Maintenance)0.00.0

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Number of Participants Who Were Responders and Non-responders During the DB Phase

Responders were participants with at least a 50% reduction in the 28-day total partial seizure frequency in the DB Phase as compared to the Baseline period. Participants without any post-baseline data were considered non-responders. (NCT00235755)
Timeframe: Week 1 through Week 16

,,
Interventionparticipants (Number)
RespondersNon-responders
Placebo - DB Phase (Titration Plus Maintenance)31148
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)57124
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)70108

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Number of Participants Who Were Seizure-free During the DB Phase (Titration and Maintenance Phases)

Participants were considered to be seizure-free if they had not reported any seizures during the DB treatment period (Weeks 1-18). For a participant to be seizure free during the DB Phase, the participant had to be seizure free both Week 7 to Week 18 and Week 1 to Week 6. A participant could be seizure free Week 7 to Week 18 (during the Maintenance Phase), but not seizure free Week 1 to Week 6. Hence, there are fewer participants being reported as seizure free from Week 1 to Week 18 than from Week 7 to Week 18. (NCT00235755)
Timeframe: Week 1 through Week 16

,,
Interventionparticipants (Number)
Seizure-freeNot seizure-free
Placebo - DB Phase (Titration Plus Maintenance)2174
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)0179
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)7168

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Number of Participants Who Were Seizure-free During the Maintenance Phase

Participants were considered to be seizure-free if they had not reported any seizures during the Maintenance Phase. (NCT00235755)
Timeframe: Week 5 through Week 16

,,
Interventionparticipants (Number)
Seizure-freeNot seizure-free
Placebo - DB Phase (Titration Plus Maintenance)2162
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)5153
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)7142

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Number of Participants Whose Clinical Laboratory Values Were Deemed an Adverse Event by the Investigator (>=2% in Any Treatment Arm)

Clinically important changes in laboratory values were to be reported as an adverse event if they met one of the following criteria: (1) intervention required; (2) change in dose of study drug required; (3) other treatment/therapy required; (4) association with other diagnoses. (NCT00235755)
Timeframe: Week 1 through Week 16

,,,,,
Interventionparticipants (Number)
ProtenuriaHyperlipidemiaHypercholesterolemiaHematuria
Placebo - DB Phase (Titration Plus Maintenance)3322
Placebo - Transition Phase0001
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)2045
Retigabine 200 mg TID - Transition Phase1000
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)0012
Retigabine 300 mg TID - Transition Phase0011

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Number of Participants With a >=7% Increase in Body Weight During Weeks 2 and 4 of theTitration Phase and Weeks 6, 8, 12, and 16 of the Maintenance Phase

The number of participants with recorded weight gain of >=7% over their baseline weight was measured. (NCT00235755)
Timeframe: Weeks 2 and 4 of Titration Phase and Weeks 6, 8, 12, and 16 of Maintenance Phase

,,
Interventionparticipants (Number)
Week 2, n=174, 180, 175Week 4, n=169, 172, 167Week 6, n=169, 165, 152Week 8, n=161, 160, 149Week 12, n=159, 151, 144Week 16, n=153, 139, 132
Placebo - DB Phase (Titration Plus Maintenance)001164
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)37891513
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)38771312

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Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the DB Phase (Titration and Maintenance Phases) by Indicated Decile Reduction and Increase Categories

Participants who experienced a reduction from Baseline in the 28-day total partial seizure frequency were categorized in decile cutting, i.e., reduction categories of 90-100%, 80-<90%, 70-<80%, 60-<70%, 50-<60%, 40-<50%, 30-<40%, 20-<30%, 10-<20%, >0-<10%, and increase categories of 0-10%, >10-20%, >20-30%, >30% (FDA endpoint). Participants without any post-baseline data were included in the category 0-10% increase category. (NCT00235755)
Timeframe: Baseline (Week -7 through Week 0), Week 1 through Week 16

,,
Interventionparticipants (Number)
Reduction: 90% to 100%Reduction: 80% to <90%Reduction: 70% to <80%Reduction: 60% to <70%Reduction: 50% to <60%Reduction: 40% to <50%Reduction: 30% to <40%Reduction: 20% to <30%Reduction: 10% to <20%Reduction: >0% to <10%Increase: 0% to 10%Increase: >10% to 20%Increase: >20% to 30%Increase: >30%
Placebo - DB Phase (Titration Plus Maintenance)348799152418162013825
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)581114191316161813119325
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)11147211717219108117124

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Number of Participants With a Reduction in the 28-day Total Partial Seizure Frequency From Baseline to the End of DB Phase (Titration and Maintenance Phases) by Indicated Quartile Reduction Categories

"Participants who experienced a reduction from Baseline in the 28-day total partial seizure frequency were categorized as having a reduction of 75-100%, 50-<75%, 25-<50%, or <25%, in addition to having no reduction. This quartile cutting was specified in the study protocol. Participants without any post-baseline data are included in the No reduction category." (NCT00235755)
Timeframe: Baseline (Week -7 through Week 0), Week 1 through Week 16

,,
Interventionparticipants (Number)
75% to 100% reduction50% to <75% reduction25% to <50% reduction>0 to <25% reductionNo reduction
Placebo - DB Phase (Titration Plus Maintenance)1219394366
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)1641383848
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)2743412443

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Number of Participants With the Indicated Reduction From Baseline in the 28-day Total Partial Seizure Frequency During the Maintenance Phase

Participants who experienced a reduction from Baseline in the 28-day total partial seizure frequency were categorized as having a >75%, a 50-75%, or a <50% reduction, in addition to having no reduction (EMEA endpoint). (NCT00235755)
Timeframe: Baseline (Week -7 through Week 0), Week 5 through Week 16

,,
Interventionparticipants (Number)
>75% reduction50% to 75% reduction>0 to <50% reductionNo reduction
Placebo - DB Phase (Titration Plus Maintenance)11208350
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)27346037
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)30404930

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Quality of Life Assessed by Quality of Life in Epilepsy-Problems Questionnaire (QOLIE-31-P) at BL (Week 0) and Weeks 4, 8, and 16

The QOLIE-31-P is a 31-item questionnaire evaluating a participant's QOL perception in 7 domains: seizure worry, emotional well being, energy/fatigue, cognitive functioning, medication effects, social functioning, overall QOL. Precoded numeric values for some domains are such that a higher number reflects a more favorable health state; others are such that a higher number reflects a less favorable state. Precoded values are first converted to 0-100 point scores; higher converted scores always reflect better QOL. The overall score is derived by weighting and then summing the 7 domain scores. (NCT00235755)
Timeframe: End of Baseline (Week 0), Weeks 4, 8, and 16

,,
Interventionscores on a scale (Mean)
Baseline, n=165, 173, 166Week 4 (Titration Phase), n=155, 155, 149)Week 8 (Maintenance Phase), n=141, 146, 127Week 16 (Maintenance Phase), n=143, 133, 123
Placebo - DB Phase (Titration Plus Maintenance)53.355.455.354.7
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)56.057.359.659.1
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)52.152.752.753.2

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Patient Global Impression (PGI) Score at the End of the Maintenance Phase

PGI is a participant-rated scale of improvement that was administered at the end of the Maintenance Phase in order to assess the participant's impression of his or her own improvement. PGI assessments were scored using a 7-point scale: 1, very much improved; 2, much improved; 3, minimally improved; 4, no change; 5, minimally worse; 6, much worse; or 7, very much worse. (NCT00235755)
Timeframe: Week 16/end of treatment phase

Interventionscores on a scale (Mean)
Placebo - DB Phase (Titration Plus Maintenance)3.3
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)2.9
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)3.0

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Percent Change From Baseline (BL) in the 28-day Total Partial Seizure Frequency During the Maintenance Phase

28-day total partial seizure frequency in the BL period = (No. of total partial seizures reported in the BL period divided by the No. of days of available total partial seizure data in the BL period) x 28 days. 28-day total partial seizure frequency in the Maintenance Phase = (No. of total partial seizures reported in the Maintenance Phase divided by the No. of days of available total partial seizure data in the same phase) x 28 days. Percent change = (value in the Maintenance Phase minus value at BL divided by the BL value) x 100%. Negative values indicate a reduction in seizure frequency. (NCT00235755)
Timeframe: Baseline (Week -7 through Week 0), Week 5 through Week 16

InterventionPercent change in seizure frequency (Median)
Placebo - DB Phase (Titration Plus Maintenance)-17.4
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)-35.3
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)-44.3

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Percent Change in the 28-day Total Partial Seizure (PS) Frequency From Baseline (BL) to the End of the Double-blind (DB) Phase (Titration and Maintenance Phases)

28-day total PS (PSs [also called focal seizures] are seizures limited to a specific area of the brain) frequency in the BL period = (Number [No.] of total PSs reported in the BL period divided by the No. of days of available total PS data in the BL period) x 28 days. 28-day total PS frequency in the DB period = (No. of total PSs reported in the DB period divided by the No. of days of available total PS data in the DB period) x 28 days. Percent change = ([value in the DB period minus value at BL] divided by the BL value) x 100%. Negative valu es indicate a reduction in seizure frequency. (NCT00235755)
Timeframe: Baseline (Week -7 through Week 0), DB Phase (Week 1 through Week 16)

Interventionpercent change in seizure frequency (Median)
Placebo - Double Blind (DB) Phase (Titration Plus Maintenance)-15.9
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)-39.9
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)-27.9

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Percentage of Seizure-free Days During the DB Phase (Titration and Maintenance Phases)

A seizure-free day was a day without any seizures. For a participant to be seizure free during the DB Phase, the participant had to be seizure free both Week 7 to Week 18 and Week 1 to Week 6. A participant could be seizure free Week 7 to Week 18 (during the Maintenance Phase), but not seizure free Week 1 to Week 6. Hence, there are fewer participants being reported as seizure free from Week 1 to Week 18 than from Week 7 to Week 18. The percentage of seizure-free days was calculated as the total number of days without seizures in the DB period divided by the number of days in DB period x 100%. (NCT00235755)
Timeframe: Week 1 through Week 16

Interventionpercentage of days (Median)
Placebo - DB Phase (Titration Plus Maintenance)77.8
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)79.5
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)82.1

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Percentage of Seizure-free Days During the Maintenance Phase

A seizure-free day was a day without any seizures. The percentage of seizure-free days was calculated as the total number of days without seizures in the Maintenance Phase divided by the number of days in the Maintenance Phase x 100%. (NCT00235755)
Timeframe: Week 5 through Week 16

Interventionpercentage of days (Median)
Placebo - DB Phase (Titration Plus Maintenance)78.1
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)81.6
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)84.5

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Change From Baseline in Post-void Residual Urine Volume at Weeks 8 and 16 of the Maintenance Phase

Post-void residual (PVR) urine refers to the amount of urine remaining in the bladder after normal urination. To investigate the possible effects of retigabine on bladder function, all participants underwent post-void residual bladder ultrasound at Baseline and during the Maintenance Phase. The PVR bladder ultrasound was performed by a urologist, a qualified ultrasound technician, or a qualified study nurse who was certified to do PVR bladder ultrasound. Change from Baseline in PVR residual volume was calculated as the values at Week 10 and Week 16 minus the value at Baseline. (NCT00235755)
Timeframe: Baseline (Week -7 through 0), Weeks 8 and 16

,,
Interventionmilliliters (Median)
Week 8, n=143, 134, 121Week 16, n=141, 131, 115
Placebo: Maintenance Phase00
Retigabine 200 mg TID: Maintenance Phase00
Retigabine 300 mg TID: Maintenance Phase00

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Number of Participants Classified as Responders and Non-responders During the Maintenance Phase

Responders were participants with at least a 50% reduction in the 28-day total partial seizure frequency in the Maintenance Phase as compared to the Baseline period. (NCT00235755)
Timeframe: Week 5 through Week 16

,,
Interventionparticipants (Number)
RespondersNon-responders
Placebo - DB Phase (Titration Plus Maintenance)31133
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance6197
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)7079

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Number of Participants Reporting New Seizure Types in the Indicated Categories During the DB Phase (Titration and Maintenance Phases) That Were Not Reported at Baseline

New seizure types included those seizures which were not reported by any participant at Baseline. (NCT00235755)
Timeframe: Baseline (Week -7 through Week 0), Week 1 through Week 16

,,
Interventionparticipants (Number)
Partial seizures without motor signsPartial evolving to secondarily generalizedPartial seizures with motor signsTonic-clonic seizuresFlurriesTonic seizuresComplex partial seizuresUnclassified seizures
Placebo - DB Phase (Titration Plus Maintenance)96503310
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)85602041
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)129331140

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Number of Participants Who Experienced the Indicated Level of Exacerbation and Reduction in the 28-day Total Partial Seizure Frequency From Baseline During the Maintenance Phase

Participants who experienced an exacerbation from Baseline in the 28-day total partial seizure frequency were categorized as having a 0-25% or a >25% increase (EMEA endpoint). The number of participants experiencing a >0% reduction from Baseline in the 28-day total partial seizure frequency are also presented. (NCT00235755)
Timeframe: Baseline (Week -7 through Week 0), Week 5 through Week 16

,,
Interventionparticipants (Number)
0% to 25% increase>=25% increase>0% reduction
Placebo - DB Phase (Titration Plus Maintenance)2822114
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)1423121
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)1119119

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Clinical Global Impression-Improvement (CGI-I) Score at the End of the Maintenance Phase

Clinical Global Impression of Improvement (CGI-I) is a 7-point scale that requires the clinician to assess how much the participant's illness has improved or worsened relative to a baseline state at the beginning of the treatment. Scores on the scale are rated as: 1, very much improved; 2, much improved; 3, minimally improved; 4, no change; 5, minimally worse; 6, much worse; or 7, very much worse. (NCT00235755)
Timeframe: Week 16/end of treatment phase

Interventionscores on a scale (Mean)
Placebo - DB Phase (Titration Plus Maintenance)3.2
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)2.9
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)2.9

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Number of Participants Who Reported the Indicated Renal and Urinary Disorder Adverse Events at a Frequency Threshold of 2% (in Any Treatment Arm)

A summary of the adverse events classified as renal or urinary disorders and in which at least 2% (rounded to an integer) of participants in any treatment arm reported during the study is presented. (NCT00235755)
Timeframe: Week 1 through Week 16

,,,,,
Interventionparticipants (Number)
DysuriaUrinary retentionPolyuriaUrinary hesitationHaematuria
Placebo - DB Phase (Titration Plus Maintenance)00432
Placebo - Transition Phase00031
Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance)31165
Retigabine 200 mg TID - Transition Phase00010
Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance)44212
Retigabine 300 mg TID - Transition Phase00001

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Number of Participants Who Were Seizure Free for Any 12 Continuous Months

Duration of exposure is defined using a window range allowed for each scheduled visit. At least 12 months of exposure is defined as >= 353 days of exposure since the window range for Month 12 visit is +/- 7 days. Only those participants available at the specified time points were analyzed. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Overall Study14

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Number of Participants Who Were Seizure Free for Any 6 Continuous Months

Number of seizure free days is defined as the number of applicable days without any seizures (partial, generalized or unclassified). Only the days in which a subject had non-missing seizure data were considered as applicable days. Duration of exposure is defined using a window range allowed for each scheduled visit. At least 6 months of exposure is defined as >= 173 days of exposure since the window range for Month 6 visit is +/- 7 days. Only those participants available at the specified time points were analyzed. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Overall Study20

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Number of Participants With a Decrease in Confrontational Visual Field From Initial Examination

Decrease in confrontation visual field is defined as a participant having a normal initial exam and an abnormal exam thereafter or, a response of clinically significant worsening in either eye since the last assessment. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Overall Study0

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Number of Participants With Pigmentation of Non-retinal Ocular Tissue

The ophthalmologist/retina specialist determined the presence or absence of abnormal discoloration of all non-retinal ocular tissues. Only those participants available at the specified time points were analyzed. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Overall Study11

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Number of Participants With Pigmentation of Retinal Ocular Tissue

The ophthalmologist/retina specialist determined the presence or absence of abnormal discoloration of retinal ocular tissues. It included Pigmentary abnormalities in the macula, of peripheral retina as well as in both of them.. Only those participants available at the specified time points were analyzed. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Overall Study14

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Number of Participants With Resolution of Dermatologist Confirmed Abnormal Discoloration After Discontinuation of Retigabine

An assessment of the participant's nails, lips, skin and mucosa was completed by the investigator at the 6 monthly SFUCP study visits. The assessment of the participant's skin included assessment of the skin around the eyes and the eyelids, lips, nails, and mucosa. (NCT00310375)
Timeframe: 2 years 9 months

InterventionParticipants (Number)
Retigabine SFUCP1

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Number of Participants With Treatment-emergent Adverse Events Leading to Withdrawal From Study Drug

Treatment-emergent AE was defined as an AE with an onset on or after the day of first dose of the study medication and on or before 30 days after the last dose date. AEs reported during parent study and worsened after first dose of RTG in this OLE study were also reported. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants. (Number)
Overall Study52

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Number of Responders

A participant was classified as a responder if there is an at least 50% reduction from Baseline in the 28-day total Partial Seizure frequency. Baseline was defined as the parent study Baseline. Only those participants available at the specified time points were analyzed. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Overall Study98

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Change From Baseline in Heart Rate

Heart rate (HR) was measured in supine (Su) position and again in standing (St) position after the participant was standing for approximately 2 minutes at each study visit (Month 1, Month 3, Month 6, Month 9, Month 12 and every 4 months after Month 12). Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionBeats per Minute (Mean)
Su HR Mon 1, n=174Su HR Mon 3, n=159Su HR Mon 6, n=143Su HR Mon 9, n=124Su HR Mon 12, n=173Su HR Mon 16, n=104Su HR Mon 20, n=100Su HR Mon 24, n=112Su HR Mon 28, n=88Su HR Mon 32, n=85Su HR Mon 36, n=92Su HR Mon 40, n=78Su HR Mon 44, n=76Su HR Mon 48, n=82Su HR Mon 52, n=67Su HR Mon 56, n=63Su HR Mon 60, n=70Su HR Mon 64, n=50Su HR Mon 68, n=45Su HR Mon 72, n=57Su HR Mon 76, n=31Su HR Mon 80, n=24Su HR Mon 84, n=36Su HR Mon 88, n=17Su HR Mon 92, n=16Su HR Mon 96, n=19Su HR Mon 100, n=7Su HR Mon 104, n=1Su HR Mon 108, n=10St HR Mon 1, n=174St HR Mon 3, n=158St HR Mon 6, n=143St HR Mon 9, n=124St HR Mon 12, n=170St HR Mon 16, n=104St HR Mon 20, n=100St HR Mon 24, n=110St HR Mon 28, n=87St HR Mon 32, n=84St HR Mon 36, n=91St HR Mon 40, n=77St HR Mon 44, n=75St HR Mon 48, n=81St HR Mon 52, n=67St HR Mon 56, n=62St HR Mon 60, n=69St HR Mon 64, n=49St HR Mon 68, n=45St HR Mon 72, n=56St HR Mon 76, n=30St HR Mon 80, n=23St HR Mon 84, n=35St HR Mon 88, n=17St HR Mon 92, n=16St HR Mon 96, n=19St HR Mon 100, n=7St HR Mon 104, n=1St HR Mon 108, n=10
Overall Study-1.0-0.7-0.2-1.0-0.11.11.1-0.1-0.80.4-1.7-0.6-2.8-2.1-1.5-1.8-1.2-2.11.2-1.9-1.6-2.2-2.41.5-2.7-1.0-8.3-6.0-3.40.71.01.61.12.32.50.22.6-0.81.7-0.40.4-0.3-1.9-0.31.3-0.21.34.10.41.93.00.23.63.13.22.60.0-5.4

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Change From Baseline in Hematology Parameter-Red Blood Cell Count

Red Blood Cell count (RBC) was assessed at Month 1, Month 2, Month 3, Month 6, Month 8, Month 9, Month 10, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available.. (NCT00310375)
Timeframe: Baseline and Up to Month 108

Intervention10^12 cells/Liter(L) (Mean)
RBC, Mon 1, n=169RBC, Mon 2, n=15RBC, Mon 3, n=154RBC, Mon 4, n=26RBC, Mon 6, n=137RBC, Mon 8, n=43RBC, Mon 9, n=122RBC, Mon 10, n=55RBC, Mon 12, n=167RBC, Mon 16, n=99RBC, Mon 20, n=96RBC, Mon 24, n=110RBC, Mon 28, n=85RBC, Mon 32, n=86RBC, Mon 36, n=91RBC, Mon 40, n=78RBC, Mon 44, n=74RBC, Mon 48, n=79RBC, Mon 52, n=68RBC, Mon 56, n=63RBC, Mon 60, n=71RBC, Mon 64, n=49RBC, Mon 68, n=44RBC, Mon 72, n=53RBC, Mon 76, n=31RBC, Mon 80, n=24RBC, Mon 84, n=35RBC, Mon 88, n=16RBC, Mon 92, n=15RBC, Mon 96, n=19RBC, Mon 100, n=7RBC, Mon 104, n=1RBC, Mon 108, n=10
Overall Study Arm-0.090.01-0.06-0.16-0.04-0.03-0.06-0.010.00-0.040.01-0.01-0.04-0.03-0.11-0.11-0.09-0.16-0.08-0.13-0.14-0.10-0.06-0.090.00-0.03-0.000.030.140.040.230.300.15

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Change From Baseline in Hematology Parameters- Bands, Basophils, Eosinophils, Lymphocytes, Metamyelocyte, Monocytes, Neutrophils, Platelets, White Blood Cells Count (WBC)

Following hematology parameters were assessed, Bands (Band neutrophils), Basophils, Eosinophils, Lymphocytes, Metamyelocyte, Monocytes, Neutrophils, Platelets and WBC. Hematology parameters were assessed at Month 1, Month 2, Month 3, Month 6, Month 8, Month 9, Month 10, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

Intervention10^9 cells/Liter (Mean)
Bands, Mon 1, n=2Bands, Mon 9, n=2Bands, Mon 20, n=2Basophils, Mon 1, n=168Basophils, Mon 2, n=15Basophils, Mon 3, n=153Basophils, Mon 4, n=26Basophils, Mon 6, n=137Basophils, Mon 8, n=42Basophils, Mon 9, n=121Basophils, Mon 10, n=54Basophils, Mon 12, n=165Basophils, Mon 16, n=96Basophils, Mon 20, n=92Basophils, Mon 24, n=109Basophils, Mon 28, n=84Basophils, Mon 32, n=81Basophils, Mon 36, n=91Basophils, Mon 40, n=74Basophils, Mon 44, n=72Basophils, Mon 48, n=77Basophils, Mon 52, n=65Basophils, Mon 56, n=63Basophils, Mon 60, n=71Basophils, Mon 64, n=49Basophils, Mon 68, n=43Basophils, Mon 72, n=53Basophils, Mon 76, n=31Basophils, Mon 80, n=24Basophils, Mon 84, n=33Basophils, Mon 88, n=16Basophils, Mon 92, n=15Basophils, Mon 96, n=19Basophils, Mon 100, n=7Basophils, Mon 104, n=1Basophils, Mon 108, n=10Eosinophils, Mon 1, n=168Eosinophils, Mon 2, n=15Eosinophils, Mon 3, n=153Eosinophils, Mon 4, n=26Eosinophils, Mon 6, n=137Eosinophils, Mon 8, n=42Eosinophils, Mon 9, n=121Eosinophils, Mon 10, n=54Eosinophils, Mon 12, n=165Eosinophils, Mon 16, n=96Eosinophils, Mon 20, n=92Eosinophils, Mon 24, n=109Eosinophils, Mon 28, n=84Eosinophils, Mon 32, n=81Eosinophils, Mon 36, n=91Eosinophils, Mon 40, n=74Eosinophils, Mon 44, n=72Eosinophils, Mon 48, n=77Eosinophils, Mon 52, n=65Eosinophils, Mon 56, n=63Eosinophils, Mon 60, n=71Eosinophils, Mon 64, n=49Eosinophils, Mon 68, n=43Eosinophils, Mon 72, n=53Eosinophils, Mon 76, n=31Eosinophils, Mon 80, n=24Eosinophils, Mon 84, n=33Eosinophils, Mon 88, n=16Eosinophils, Mon 92, n=15Eosinophils, Mon 96, n=19Eosinophils, Mon 100, n=7Eosinophils, Mon 104, n=1Eosinophils, Mon 108, n=10Lymphocytes, Mon 1, n=168Lymphocytes, Mon 2, n=15Lymphocytes, Mon 3, n=153Lymphocytes, Mon 4, n=26Lymphocytes, Mon 6, n=137Lymphocytes, Mon 8, n=42Lymphocytes, Mon 9, n=121Lymphocytes, Mon 10, n=54Lymphocytes, Mon 12, n=165Lymphocytes, Mon 16, n=96Lymphocytes, Mon 20, n=92Lymphocytes, Mon 24, n=109Lymphocytes, Mon 28, n=84Lymphocytes, Mon 32, n=81Lymphocytes, Mon 36, n=91Lymphocytes, Mon 40, n=74Lymphocytes, Mon 44, n=72Lymphocytes, Mon 48, n=77Lymphocytes, Mon 52, n=65Lymphocytes, Mon 56, n=63Lymphocytes, Mon 60, n=71Lymphocytes, Mon 64, n=49Lymphocytes, Mon 68, n=43Lymphocytes, Mon 72, n=53Lymphocytes, Mon 76, n=31Lymphocytes, Mon 80, n=24Lymphocytes, Mon 84, n=33Lymphocytes, Mon 88, n=16Lymphocytes, Mon 92, n=15Lymphocytes, Mon 96, n=19Lymphocytes, Mon 100, n=7Lymphocytes, Mon 104, n=1Lymphocytes, Mon 108, n=10Metamyelocyte, Mon 3, n=1Monocytes, Mon 1, n=168Monocytes, Mon 2, n=15Monocytes, Mon 3, n=153Monocytes, Mon 4, n=26Monocytes, Mon 6, n=137Monocytes, Mon 8, n=42Monocytes, Mon 9, n=121Monocytes, Mon 10, n=54Monocytes, Mon 12, n=165Monocytes, Mon 16, n=96Monocytes, Mon 20, n=92Monocytes, Mon 24, n=109Monocytes, Mon 28, n=84Monocytes, Mon 32, n=81Monocytes, Mon 36, n=91Monocytes, Mon 40, n=74Monocytes, Mon 44, n=72Monocytes, Mon 48, n=77Monocytes, Mon 52, n=65Monocytes, Mon 56, n=63Monocytes, Mon 60, n=71Monocytes, Mon 64, n=49Monocytes, Mon 68, n=43Monocytes, Mon 72, n=53Monocytes, Mon 76, n=31Monocytes, Mon 80, n=24Monocytes, Mon 84, n=33Monocytes, Mon 88, n=16Monocytes, Mon 92, n=15Monocytes, Mon 96, n=19Monocytes, Mon 100, n=7Monocytes, Mon 104, n=1Monocytes, Mon 108, n=10Neutrophils, Mon 1, n=168Neutrophils, Mon 2, n=15Neutrophils, Mon 3, n=153Neutrophils, Mon 4, n=26Neutrophils, Mon 6, n=137Neutrophils, Mon 8, n=42Neutrophils, Mon 9, n=121Neutrophils, Mon 10, n=54Neutrophils, Mon 12, n=165Neutrophils, Mon 16, n=96Neutrophils, Mon 20, n=92Neutrophils, Mon 24, n=109Neutrophils, Mon 28, n=84Neutrophils, Mon 32, n=81Neutrophils, Mon 36, n=91Neutrophils, Mon 40, n=74Neutrophils, Mon 44, n=72Neutrophils, Mon 48, n=77Neutrophils, Mon 56, n=63Neutrophils, Mon 52, n=65Neutrophils, Mon 60, n=71Neutrophils, Mon 64, n=49Neutrophils, Mon 68, n=43Neutrophils, Mon 72, n=53Neutrophils, Mon 76, n=31Neutrophils, Mon 80, n=24Neutrophils, Mon 84, n=33Neutrophils, Mon 88, n=16Neutrophils, Mon 92, n=15Neutrophils, Mon 96, n=19Neutrophils, Mon 100, n=7Neutrophils, Mon 104, n=1Neutrophils, Mon 108, n=10Platelet Count, Mon 1, n=165Platelet Count, Mon 2, n=15Platelet Count, Mon 3, n=150Platelet Count, Mon 4, n=26Platelet Count, Mon 6, n=131Platelet Count, Mon 8, n=42Platelet Count, Mon 9, n=119Platelet Count, Mon 10, n=54Platelet Count, Mon 12, n=161Platelet Count, Mon 16, n=94Platelet Count, Mon 20, n=91Platelet Count, Mon 24, n=104Platelet Count, Mon 28, n=82Platelet Count, Mon 32, n=82Platelet Count, Mon 36, n=87Platelet Count, Mon 40, n=76Platelet Count, Mon 48, n=77Platelet Count, Mon 52, n=65Platelet Count, Mon 56, n=62Platelet Count, Mon 60, n=68Platelet Count, Mon 64, n=47Platelet Count, Mon 68, n=44Platelet Count, Mon 72, n=52Platelet Count, Mon 76, n=31Platelet Count, Mon 80, n=24Platelet Count, Mon 84, n=35Platelet Count, Mon 88, n=16Platelet Count, Mon 92, n=15Platelet Count, Mon 96, n=19Platelet Count, Mon 100, n=7Platelet Count, Mon 104, n=1Platelet Count, Mon 108, n=10WBC, Mon 1, n=169WBC, Mon 2, n=15WBC, Mon 3, n=154WBC, Mon 4, n=26WBC, Mon 6, n=137WBC, Mon 8, n=43WBC, Mon 9, n=122WBC, Mon 10, n=55WBC, Mon 12, n=167WBC, Mon 16, n=99WBC, Mon 20, n=96WBC, Mon 24, n=110WBC, Mon 28, n=85WBC, Mon 32, n=86WBC, Mon 36, n=91WBC, Mon 40, n=78WBC, Mon 44, n=74WBC, Mon 48, n=79WBC, Mon 52, n=68WBC, Mon 56, n=63WBC, Mon 60, n=71WBC, Mon 64, n=49WBC, Mon 68, n=44WBC, Mon 72, n=53WBC, Mon 76, n=31WBC, Mon 80, n=24WBC, Mon 84, n=35WBC, Mon 88, n=16WBC, Mon 92, n=15WBC, Mon 96, n=19WBC, Mon 100, n=7WBC, Mon 104, n=1WBC, Mon 108, n=10
Overall Study Arm-0.135-0.205-0.095-0.001-0.0150.001-0.0020.0040.0020.0030.0010.0010.0050.0040.0080.0050.0050.0060.0040.0040.004-0.004-0.004-0.003-0.0030.001-0.003-0.000-0.0010.0020.0030.0050.0060.021-0.0200.012-0.0080.023-0.010-0.003-0.015-0.022-0.0100.000-0.019-0.006-0.009-0.002-0.0160.001-0.006-0.004-0.014-0.002-0.011-0.002-0.014-0.008-0.0000.005-0.003-0.010-0.0000.0300.0060.0180.0330.030-0.005-0.178-0.043-0.1340.054-0.0550.168-0.0310.1200.009-0.053-0.031-0.069-0.0770.013-0.055-0.0280.0080.061-0.049-0.065-0.025-0.011-0.002-0.0520.1040.1490.1540.1890.4050.2850.1440.0000.044-0.0100.0060.0020.0160.039-0.0010.033-0.0020.029-0.007-0.021-0.009-0.004-0.031-0.005-0.039-0.013-0.037-0.036-0.026-0.035-0.013-0.0240.003-0.0070.0380.0190.065-0.0060.0290.0350.0040.0700.0640.158-0.5000.211-0.0030.124-0.4270.0740.2110.3090.2320.1450.221-0.032-0.034-0.0540.1410.0030.1970.0750.1510.203-0.0420.3040.3370.3800.4950.7350.0360.2750.4440.1560.2700.185-4.15.3-5.4-2-76-4.72.9-5.2-0.2-1.9-11.0-14.4-23.2-24.4-18.0-16.1-17.5-21.3-22.3-20.2-21.0-15.7-11.5-6.3-4.3-10.2-2.9-7.2-14.3-46.0-22.3-0.00-0.530.100.170.06-0.110.050.330.300.200.140.16-0.140.02-0.140.13-0.040.240.09-0.040.18-0.090.270.270.510.650.930.250.730.790.360.300.31

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Change From Baseline in Overall American Urological Association (AUA) Symptom Index Score

An AUA Symptom Index is a 7-item Likert-scored scale describing urinary bladder function and was completed by the Investigator to assess the participant's urinary voiding function at Month 1, Month 3, Month 12 and annually after Month 12. The index scale ranges from 0-35, where higher scores are indicative of a worse issue. Scores are categorized as 0-7 mild, 8-19 moderate and >19 severe. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles) (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionScores on a scale (Mean)
AUA, Mon 1, n=162AUA, Mon 3, n=151AUA, Mon 12, n=153AUA, Mon 24, n=79AUA, Mon 36, n=81AUA, Mon 48, n=79AUA, Mon 60, n=65AUA, Mon 72, n=49AUA, Mon 84, n=33AUA, Mon 96, n=19AUA, Mon 108, n=10
Overall Study-0.2-0.00.2-0.10.00.50.60.41.0-1.0-0.3

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Change From Baseline in Post-void Residual Bladder Ultrasound Volume

Post-void residual (PVR) bladder was assessed using ultrasound scan to assess urinary retention at Month 1, Month 3, Month 12 and annually after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles) (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionMilliliter (mL) (Mean)
PVR, Mon 1, n=152PVR, Mon 3, n=146PVR, Mon 12, n=144PVR, Mon 24, n=75PVR, Mon 36, n=84PVR, Mon 48, n=77PVR, Mon 60, n=65PVR, Mon 72, n=48PVR, Mon 84, n=31PVR, Mon 96, n=19PVR, Mon 108, n=10
Overall Study6.55.8-2.811.613.68.820.117.240.08.717.4

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Change From Baseline in Quality of Life in Epilepsy (QOLIE)-31-P Questionnaire

The QOLIE-31-P (Version 2.0) was utilized to assess quality of life. The QOLIE-31-P assessment was completed by the participants at Baseline, Month 3, Month 6, Month 9, Month 12 and annually after Month 12. The QOLIE has 7 sub scales as energy fatigue, emotional well being, social functioning, cognitive, medication effects, seizure worry and overall QOL. The assessment range for the overall score and the sub-scales is 0-100, where higher scores indicate greater well being. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles) (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionScores on a scale (Mean)
Mon 3, n= 133Mon 6, n= 130Mon 9, n= 114Mon 12, n= 156Mon 24, n= 102Mon 36, n= 81Mon 48, n= 74Mon 60, n= 60Mon 72, n= 49Mon 84, n= 28Mon 96, n= 18Mon 108, n= 11
Overall Study-2-2.95-1.65-2.77-3.13-2.43-1.05-0.41-0.350.19-0.251.55

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Change From Baseline in the 12-lead Electrocardiogram (ECG) Parameter-RR Interval

A 12-lead ECG was performed at each study visit during the first year of the study (Month 1, Month 3, Month 6, Month 9, Month 12) and annually after one year. The following electrocardiogram parameters are presented: RR Interval. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionSeconds (sec) (Mean)
RR interval, Mon 1, n=174RR interval, Mon 3, n=159RR interval, Mon 6, n=142RR interval, Mon 9, n=124RR interval, Mon 12, n=172RR interval, Mon 24, n=112RR interval, Mon 36, n=92RR interval, Mon 48, n=81RR interval, Mon 60, n=71RR interval, Mon 72, n=55RR interval, Mon 84, n=36RR interval, Mon 96, n=19RR interval, Mon 108, n=10
Overall Study Arm0.01950.0029-0.00070.0103-0.0015-0.01190.01440.01450.00980.02510.0285-0.0237-0.0173

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Change From Baseline in the 12-lead Electrocardiogram (ECG) Parameters-PR Interval, QRS Duration, Uncorrected QT (uQT) Interval, Corrected QT (Bazett's Correction) Interval (QTcB), Corrected QT (Friedericia's Correction) Interval (QTcF)

A 12-lead ECG was performed at each study visit during the first year of the study (Month 1, Month 3, Month 6, Month 9, Month 12) and annually after one year. The following electrocardiogram parameters are presented PR Interval, QRS Duration, Uncorrected QT interval (uQT), Corrected QT (Bazett's correction) interval (QTcB), Corrected QT (Friedericia's correction) interval (QTcF). Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionMilliseconds (msec) (Mean)
QTcB, Mon 1, n=172QTcB, Mon 3, n=157QTcB, Mon 6, n=139QTcB, Mon 9, n=121QTcB, Mon 12, n=168QTcB, Mon 24, n=109QTcB, Mon 36, n=89QTcB, Mon 48, n=80QTcB, Mon 60, n=70QTcB, Mon 72, n=54QTcB, Mon 84, n=36QTcB, Mon 96, n=19QTcB, Mon 108, n=10QTcF, Mon 1, n=172QTcF, Mon 3, n=157QTcF, Mon 6, n=139QTcF, Mon 9, n=121QTcF, Mon 12, n=168QTcF, Mon 24, n=109QTcF, Mon 36, n=89QTcF, Mon 48, n=80QTcF, Mon 60, n=70QTcF, Mon 72, n=54QTcF, Mon 84, n=36QTcF, Mon 96, n=19QTcF, Mon 108, n=10PR interval, Mon 1, n=173PR interval, Mon 3, n=158PR interval, Mon 6, n=139PR interval, Mon 9, n=123PR interval, Mon 12, n=168PR interval, Mon 24, n=110PR interval, Mon 36, n=89PR interval, Mon 48, n=80PR interval, Mon 60, n=71PR interval, Mon 72, n=53PR interval, Mon 84, n=36PR interval, Mon 96, n=19PR interval, Mon 108, n=10QRS duration, Mon 1, n=174QRS duration, Mon 3, n=159QRS duration, Mon 6, n=142QRS duration, Mon 9, n=124QRS duration, Mon 12, n=171QRS duration, Mon 24, n=112QRS duration, Mon 36, n=90QRS duration, Mon 48, n=81QRS duration, Mon 60, n=70QRS duration, Mon 72, n=55QRS duration, Mon 84, n=36QRS duration, Mon 96, n=19QRS duration, Mon 108, n=10uQT, Mon 1, n=172uQT, Mon 3, n=157uQT, Mon 6, n=139uQT, Mon 9, n=121uQT, Mon 12, n=168uQT, Mon 24, n=109uQT, Mon 36, n=89uQT, Mon 48, n=80uQT, Mon 60, n=70uQT, Mon 72, n=54uQT, Mon 84, n=36uQT, Mon 96, n=19uQT, Mon 108, n=10
Overall Study Arm3.35.81.52.25.75.93.75.45.15.58.111.0-3.74.76.01.42.95.54.74.35.95.97.29.38.9-5.7-0.81.00.0-1.4-1.0-3.1-0.30.32.52.24.3-2.40.00.4-0.2-0.20.4-0.00.71.64.03.96.24.23.83.77.56.41.44.35.12.85.57.27.311.012.55.4-8.7

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Change From Baseline in Urine Power of Hydrogen (pH)

Urine pH was assessed at Month 1, Month 3, , Month 6, Month 9, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionpH units (Mean)
UpH, Mon 1, n=166UpH, Mon 3, n=157UpH, Mon 6, n=137UpH, Mon 9, n=121UpH, Mon 12, n=170UpH, Mon 16, n=100UpH, Mon 20, n=97UpH, Mon 24, n=109UpH, Mon 28, n=86UpH, Mon 32, n=82UpH, Mon 36, n=89UpH, Mon 40, n=76UpH, Mon 44, n=72UpH, Mon 48, n=80UpH, Mon 52, n=67UpH, Mon 56, n=62UpH, Mon 60, n=68UpH, Mon 64, n=49UpH, Mon 68, n=42UpH, Mon 72, n=53UpH, Mon 76, n=31UpH, Mon 80, n=23UpH, Mon 84, n=36UpH, Mon 88, n=17UpH, Mon 92, n=16UpH, Mon 96, n=19UpH, Mon 100, n=7UpH, Mon 104, n=1UpH, Mon 108, n=10
Overall Study-0.13-0.18-0.13-0.17-0.11-0.05-0.20-0.09-0.01-0.100.120.090.120.190.170.060.240.190.120.160.130.240.000.210.280.260.140.500.65

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Change From Baseline in Urine Specific Gravity

Urine Specific gravity (USG) was assessed at Month 1, Month 3, , Month 6, Month 9, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionDimensionless unit (Mean)
USG, Mon 1, n=166USG, Mon 3, n=157USG, Mon 6, n=137USG, Mon 9, n=121USG, Mon 12, n=170USG, Mon 16, n=100USG, Mon 20, n=97USG, Mon 24, n=109USG, Mon 28, n=86USG, Mon 32, n=82USG, Mon 36, n=89USG, Mon 40, n=76USG, Mon 44, n=72USG, Mon 48, n=80USG, Mon 52, n=67USG, Mon 56, n=62USG, Mon 60, n=68USG, Mon 64, n=49USG, Mon 68, n=42USG, Mon 72, n=53USG, Mon 76, n=31USG, Mon 80, n=23USG, Mon 84, n=35USG, Mon 88, n=17USG, Mon 92, n=16USG, Mon 96, n=19USG, Mon 100, n=7USG, Mon 104, n=1USG, Mon 108, n=10
Overall Study-0.0018-0.00160.00020.0002-0.00000.00060.0008-0.0012-0.0003-0.0006-0.0024-0.0005-0.0007-0.00150.0002-0.0003-0.0023-0.0022-0.0022-0.0015-0.0024-0.0021-0.0028-0.0055-0.0030-0.0039-0.0013-0.0150-0.0014

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Change From Baseline in Weight

Weight was measured in ordinary indoor clothing (without shoes) and was recorded at each study visit (On Month 1, Month 3, Month 6, Month 9, Month 12 and every 4 months after Month 12). Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionKilograms (Mean)
Weight, Mon 1, n=172Weight, Mon 3, n=159Weight, Mon 6, n=143Weight, Mon 9, n=123Weight, Mon 12, n=171Weight, Mon 16, n=104Weight, Mon 20, n=101Weight, Mon 24, n=111Weight, Mon 28, n=88Weight, Mon 32, n=85Weight, Mon 36, n=92Weight, Mon 40, n=78Weight, Mon 44, n=76Weight, Mon 48, n=82Weight, Mon 52, n=68Weight, Mon 56, n=62Weight, Mon 60, n=69Weight, Mon 64, n=49Weight, Mon 68, n=44Weight, Mon 72, n=57Weight, Mon 76, n=31Weight, Mon 80, n=24Weight, Mon 84, n=36Weight, Mon 88, n=17Weight, Mon 92, n=16Weight, Mon 96, n=19Weight, Mon 100, n=7Weight, Mon 104, n=1Weight, Mon 108, n=10
Overall Study1.941.851.681.571.312.171.621.210.350.070.610.840.880.731.101.280.942.132.770.853.301.482.471.451.640.484.312.103.18

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Kaplan-Meier Estimate of the Probability of Discontinuation (d/c) From Study Drug

"The time frame of premature study discontinuation was defined as the time from the day of first the study medication to the time of withdrawal from study drug. For those who have a taper dose start date, the time of withdrawal was the day before the start of taper dose. For those without a taper dose start date, the time of withdrawal was the last dose date. Participants who switched to the commercial product were censored at the last dose of study drug in the Kaplan-Meier analysis. All participants who withdrew from study drug prematurely but didn't switch to commercial product were counted as events. Kaplan-Meier estimate of the probability of discontinuation at the specified time or earlier. Number of Participants continuing on RTG at each time of withdrawal were analyzed (represented as n=X in category title)." (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionPercentage Probability of d/c (Number)
Day 0,n= 181Day 2,n= 180Day 6,n= 179Day 8,n= 178Day 12,n= 177Day 13,n= 176Day 18,n= 175Day 20,n= 174Day 21,n= 173Day 26,n= 172Day 27,n= 170Day 28,n= 169Day 29,n= 168Day 30,n= 167Day 32,n= 166Day 33,n= 164Day 39,n= 163Day 50,n= 162Day 52,n= 161Day 55,n= 160Day 67,n= 158Day 85,n= 157Day 89,n= 155Day 91,n= 153Day 93,n= 152Day 96,n= 151Day 109,n= 150Day 118,n= 149Day 119,n= 148Day 124,n= 147Day 134,n= 146Day 135,n= 145Day 140,n= 144Day 144,n= 143Day 166,n= 142Day 167,n= 141Day 175,n= 140Day 179,n= 139Day 180,n= 138Day 181,n= 137Day 182,n= 135Day 185,n= 134Day 188,n= 133Day 207,n= 132Day 210,n= 131Day 211,n= 130Day 213,n= 129Day 216,n= 128Day 224,n= 127Day 231,n= 126Day 237,n= 125Day 240,n= 124Day 253,n= 123Day 271,n= 122Day 278,n= 121Day 280,n= 120Day 281,n= 119Day 282,n= 118Day 303,n= 117Day 315,n= 116Day 336,n= 114Day 338,n= 113Day 358,n= 112Day 361,n= 111Day 362,n= 110Day 372,n= 109Day 377,n= 108Day 392,n= 107Day 407,n= 106Day 413,n= 105Day 477,n= 104Day 479,n= 103Day 483,n= 102Day 489,n= 101Day 535,n= 100Day 593,n= 99Day 602,n= 98Day 603,n= 97Day 606,n= 96Day 609,n= 95Day 660,n= 94Day 685,n= 93Day 722,n= 92Day 783,n= 91Day 821,n= 90Day 843,n= 88Day 848,n= 87Day 881,n= 86Day 959,n= 85Day 1076,n= 84Day 1080,n= 83Day 1084,n= 82Day 1090,n= 81Day 1119,n= 80Day 1146,n= 79Day 1196,n= 78Day 1210,n= 77Day 1225,n= 76Day 1322,n= 75Day 1326,n= 74Day 1338,n= 73Day 1339,n= 72Day 1407,n= 71Day 1429,n= 70Day 1520,n= 69Day 1561,n= 68Day 1563,n= 67Day 1619,n= 66Day 1645,n= 65Day 1655,n= 64Day 1656,n= 63Day 1673,n= 62Day 1676,n= 61Day 1686,n= 60Day 1737,n= 59Day 1780,n= 58Day 1800,n= 57Day 1811,n= 56Day 1813,n= 55Day 1862,n= 54Day 1885,n= 53Day 1911,n= 52Day 1926,n= 51Day 1933,n= 50Day 1952,n= 49Day 1989,n= 48Day 1994,n= 47Day 2008,n= 46Day 2038,n= 45Day 2044,n= 44Day 2051,n= 43Day 2073,n= 42Day 2109,n= 41Day 2111,n= 40Day 2139,n= 39Day 2157,n= 38Day 2161,n= 37Day 2164,n= 36Day 2170,n= 35Day 2228,n= 34Day 2234,n= 33Day 2248,n= 32Day 2274,n= 31Day 2278,n= 30Day 2282,n= 28Day 2290,n= 27Day 2294,n= 26Day 2297,n= 25Day 2301,n= 24Day 2337,n= 23Day 2393,n= 22Day 2523,n= 21Day 2527,n= 20Day 2528,n= 19Day 2535,n= 18Day 2646,n= 16Day 2702,n= 15Day 2735,n= 14Day 2768,n= 13Day 2792,n= 12Day 2795,n= 11Day 2833,n= 10Day 2848,n= 9Day 2871,n= 8Day 2886,n= 7Day 3001,n= 6Day 3004,n= 5Day 3023,n= 4Day 3091,n= 3Day 3092,n= 2Day 3101,n= 1Day 3186,n= 0
Overall Study0.00.61.11.72.22.83.33.94.45.06.16.67.27.78.39.49.910.511.011.612.713.314.415.516.016.617.117.718.218.819.319.920.421.021.522.122.723.223.824.325.426.026.527.127.628.228.729.329.830.430.931.532.032.633.133.734.334.835.435.937.037.638.138.739.239.840.340.941.442.042.543.143.644.244.845.345.946.447.047.548.148.649.249.750.351.451.952.553.053.654.154.755.255.856.456.957.558.058.659.159.760.260.861.361.962.463.063.063.063.063.063.664.264.764.764.765.466.066.666.667.267.267.267.267.867.868.568.568.569.269.969.969.969.969.969.970.771.572.372.372.372.373.273.274.975.876.777.678.579.480.381.282.183.083.985.786.687.588.489.390.291.191.992.893.794.695.596.497.398.299.1100.0

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Number of Participants With Abnormal Pigmentation of Skin, Including the Skin Around the Eyes and the Eyelids, Lips, Nails, or Mucosa

An assessment of the participant's nails, lips, skin and mucosa was completed by the investigator at the 4 monthly study visits. The assessment of the participant's skin included assessment of the skin around the eyes and the eyelids,lips, nails, and mucosa (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Any abnormal dermatologic discolorationAbnormal discoloration of skinAbnormal discoloration of lipsAbnormal discoloration of nailsAbnormal discoloration of mucosaAbnormal discoloration of sun-exposed tissueAbnormal discoloration of non su-exposed tissue
Overall Study23151621172218

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Number of Participants With Abnormal Results in Physical Examination

A complete physical examination was performed at the end of each 12 month study cycle. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). If a participant had an abnormal result for at least one body system of exam, that participant was included in the 'Abnormal' category (NCT00310375)
Timeframe: Up to Month 108

InterventionParticipants (Number)
Baseline, n=181Mon 12, n=169Mon 24, n=113Mon 36, n=92Mon 48, n=82Mon 60, 69Mon 72, n=56Mon 84, n=36Mon 96, n=19Mon 108, n=10
Overall Study Arm5949342725323125105

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Number of Participants With Abnormal Results of Neurological Examination

Participants were assessed at Month 1, Month 3, Month 6, Month 9, Month 12 and every 4 months after Month 12. Participants in the worst category among the results of all neurological examination parameters are presented. Abnormal results were categorised as Abnormal not Clinically Significant (AbNCS)and Abnormal and Clinically Significant (AbCS). Only those participants available at the specified time points were analyzed (represented by n=X in the category titles) (NCT00310375)
Timeframe: Up to Month 108

InterventionParticipants (Number)
Baseline, n= 173, AbNCSBaseline, n= 173, AbCSMon 1, n= 173, AbNCSMon 1, n= 173, AbCSMon 3, n= 159, AbNCSMon 3, n= 159, AbCSMon 6, n= 141, AbNCSMon 6, n= 141, AbCSMon 9, n= 125, AbNCSMon 9, n= 125, AbCSMon 12, n= 171, AbNCSMon 12, n= 171, AbCSMon 16, n= 104, AbNCSMon 16, n= 104, AbCSMon 20, n= 98, AbNCSMon 20, n= 98, AbCSMon 24, n= 113, AbNCSMon 24, n= 113, AbCSMon 28, n= 87, AbNCSMon 28, n= 87, AbCSMon 32, n= 86, AbNCSMon 32, n= 86, AbCSMon 36, n= 92, AbNCSMon 36, n= 92, AbCSMon 40, n= 78, AbNCSMon 40, n= 78, AbCSMon 44, n= 76, AbNCSMon 44, n= 76, AbCSMon 48, n= 82, AbNCSMon 48, n= 82, AbCSMon 52, n= 67, AbNCSMon 52, n= 67, AbCSMon 56, n= 63, AbNCSMon 56, n= 63, AbCSMon 60, n= 68, AbNCSMon 60, n= 68, AbCSMon 64, n= 50, AbNCSMon 64, n= 50, AbCSMon 68, n= 44, AbNCSMon 68, n= 44, AbCSMon 72, n= 56, AbNCSMon 72, n= 56, AbCSMon 76, n= 31, AbNCSMon 76, n= 31, AbCSMon 80, n= 24, AbNCSMon 80, n= 24, AbCSMon 84, n= 36, AbNCSMon 84, n= 36, AbCSMon 88, n= 17, AbNCSMon 88, n= 17, AbCSMon 92, n= 16, AbNCSMon 92, n= 16, AbCSMon 96, n= 19, AbNCSMon 96, n= 19, AbCSMon 100, n= 7, AbNCSMon 100, n= 7, AbCSMon 104, n= 1, AbNCSMon 104, n= 1, AbCSMon 108, n= 10, AbNCSMon 108, n= 10, AbCS
Overall Study601149174293583295613231028635623619528622825325619419427321115020411070140012140201020

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Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of Retigabine

The ophthalmologist/retina specialist determined the presence or absence of retinal and non-retinal ocular abnormalities. Retinal abnormalities included abnormalities in the macula and/or the peripheral retina and non-retinal ocular pigmentary abnormality. (NCT00310375)
Timeframe: 2 years and 9 months

InterventionParticipants (Number)
Retinal pigmentary abnormalityPigmentary abnormality of maculaPigmentary abnormality of peripheral retinaNon-retinal ocular pigmentary abnormality
Retigabine SFUCP1134

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Number of Participants With Treatment-emergent Serious Adverse Event (SAE) and Adverse Event (AE)

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization (unplanned hospital stay) or prolongation of existing hospitalization, results in disability/incapacity or is a congenital anomaly/birth defect. Treatment-emergent AE was defined as an AE with an onset on or after the day of first dose of the study medication and on or before 30 days after the last dose date. AEs reported during parent study and worsened after first dose of RTG in this OLE study were also reported. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Any Treatment-emergent SAEAny Treatment-emergent AE
Overall Study48173

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Time From Discontinuation of Retigabine to Resolution of Abnormal Eye Pigmentation

Retinal pigmentary abnormality was determined by either an ophthalmologist or retina specialist. Retinal pigmentary abnormality included pigmentary abnormality of macula, pigmentary abnormality of the peripheral retina and non-retinal ocular pigmentary abnormality. If a participant had pigmentary abnormality of macula and pigmentary abnormality of the peripheral retina both should be resolved in order for retinal pigmentary abnormality to be considered resolved. If a participant had non-retinal ocular pigmentary abnormality in more than location (conjunctiva, sclera, cornea, iris or lens), all should be resolved for non-retinal pigmentary abnormality to be considered resolved. Only participants with resolution of the specified pigmentation are included in this analysis. (NCT00310375)
Timeframe: 2 years 9 months

InterventionDays (Median)
Retinal Pigmentary Abnormality, n=1Pigmentary Abnormality of Macula, n=1Pigmentary Abnormality of Peripheral Retina, n=3Non-Retinal Ocular Pigmentary Abnormality, n=4
Retigabine SFUCP317.0163.0317.0180.0

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Time From Discontinuation of Retigabine to Resolution of All Dermatologist-Confirmed Abnormal Discoloration

Assessments were at approximately 6-monthly intervals (timed relative to the participants previous dermatology assessment) until the abnormal discoloration either resolved or stabilized (as defined by no changes over 2 consecutive 6-monthly assessments performed by the dermatologist over at least 12 months after discontinuation of retigabine). The assessment of the participant's skin included assessment of the skin around the eyes and the eyelids, lips, nails, and mucosa. Only participants with resolution of the specified tissue are included in this analysis. (NCT00310375)
Timeframe: 2 years 9 months

InterventionDays (Median)
All, n=1Skin, n=5Lips, n=4Nails,n=7Mucosa, n=3
Retigabine SFUCP439.0347.0284.5377.0468.0

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Percentage Change From Baseline in the 28-day Partial Seizure

Twenty-eight-day total partial seizure frequency during the study is defined as the sum of total partial seizures from First date (Baseline visit date +1 if no seizures on Baseline or Baseline visit date if seizures reported on the Baseline) to Last date (last visit date for seizure record with non-missing response), divided by applicable days, standardized by 28 days. The applicable days are the days in which the subject had non-missing seizure data. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionPercent change (Mean)
Overall Study-34.2

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Percentage of Seizure-free Days

Number of seizure free days is defined as the number of applicable days without any seizures (partial, generalized or unclassified). Only the days in which a participant had non-missing seizure data was considered as applicable days (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionPercentage of days (Mean)
Overall Study75.7

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Change From Baseline in Blood Pressure

Systolic blood pressure (SBP) and diastolic blood pressure (DBP) was obtained in supine (Su) position and again in standing (St) position after the participant was standing for approximately 2 minutes at each study visit (Month 1, Month 3, Month 6, Month 9, Month 12 and every 4 months after Month 12). Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). Not Applicable (NA) indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionMillimeter of mercury (mmHg) (Mean)
Su DBP Mon 1, n=173Su DBP Mon 3, n=159Su DBP Mon 6, n=143Su DBP Mon 9, n=125Su DBP Mon 12, n=173Su DBP Mon 16, n=104Su DBP Mon 20, n=100Su DBP Mon 24, n=112Su DBP Mon 28, n=88Su DBP Mon 32, n=85Su DBP Mon 36, n=92Su DBP Mon 40, n=78Su DBP Mon 44, n=76Su DBP Mon 48, n=82Su DBP Mon 52, n=68Su DBP Mon 56, n=63Su DBP Mon 60, n=70Su DBP Mon 64, n=50Su DBP Mon 68, n=45Su DBP Mon 72, n=57Su DBP Mon 76, n=31Su DBP Mon 80, n=24Su DBP Mon 84, n=36Su DBP Mon 88, n=17Su DBP Mon 92, n=16Su DBP Mon 96, n=19Su DBP Mon 100, n=7Su DBP Mon 104, n=1Su DBP Mon 108, n=10St DBP Mon 1, n=173St DBP Mon 3, n=159St DBP Mon 6, n=143St DBP Mon 9, n=125St DBP Mon 12, n=170St DBP Mon 16, n=104St DBP Mon 20, n=100St DBP Mon 24, n=110St DBP Mon 28, n=87St DBP Mon 32, n=84St DBP Mon 36, n=91St DBP Mon 40, n=77St DBP Mon 44, n=75St DBP Mon 48, n=81St DBP Mon 52, n=67St DBP Mon 56, n=62St DBP Mon 60, n=69St DBP Mon 64, n=49St DBP Mon 68, n=45St DBP Mon 72, n=56St DBP Mon 76, n=30St DBP Mon 80, n=23St DBP Mon 84, n=34St DBP Mon 88, n=17St DBP Mon 92, n=16St DBP Mon 96, n=19St DBP Mon 100, n=7St DBP Mon 104, n=1St DBP Mon 108, n=10Su SBP Mon 1, n=173Su SBP Mon 3, n=159Su SBP Mon 6, n=143Su SBP Mon 9, n=125Su SBP Mon 12, n=173Su SBP Mon 16, n=104Su SBP Mon 20, n=100Su SBP Mon 24, n=112Su SBP Mon 28, n=88Su SBP Mon 32, n=85Su SBP Mon 36, n=92Su SBP Mon 40, n=78Su SBP Mon 44, n=76Su SBP Mon 48, n=82Su SBP Mon 52, n=68Su SBP Mon 56, n=63Su SBP Mon 60, n=70Su SBP Mon 64, n=50Su SBP Mon 68, n=45Su SBP Mon 72, n=57Su SBP Mon 76, n=31Su SBP Mon 80, n=24Su SBP Mon 84, n=36Su SBP Mon 88, n=17Su SBP Mon 92, n=16Su SBP Mon 96, n=19Su SBP Mon 100, n=7Su SBP Mon 104, n=1Su SBP Mon 108, n=10St SBP Mon 1, n=173St SBP Mon 3, n=159St SBP Mon 6, n=143St SBP Mon 9, n=125St SBP Mon 12, n=170St SBP Mon 16, n=104St SBP Mon 20, n=100St SBP Mon 24, n=110St SBP Mon 28, n=87St SBP Mon 32, n=84St SBP Mon 36, n=91St SBP Mon 40, n=77St SBP Mon 44, n=75St SBP Mon 48, n=81St SBP Mon 52, n=67St SBP Mon 56, n=62St SBP Mon 60, n=69St SBP Mon 64, n=49St SBP Mon 68, n=45St SBP Mon 72, n=56St SBP Mon 76, n=30St SBP Mon 80, n=23St SBP Mon 84, n=34St SBP Mon 88, n=17St SBP Mon 92, n=16St SBP Mon 96, n=19St SBP Mon 100, n=7St SBP Mon 104, n=1St SBP Mon 108, n=10
Overall Study-1.1-0.7-2.9-2.6-0.6-2.3-1.9-1.3-0.8-0.6-1.6-2.5-1.1-1.20.7-0.3-0.8-1.7-1.10.2-0.5-1-2.3-0.1-2.8-0.2-6.3-20.0-2.0-0.5-1.0-1.8-1.9-1.0-1.8-1.00.5-1.00.9-0.7-0.6-0.60.11.0-1.0-1.9-2.1-2.90.5-2.4-2.0-0.60.6-3.12.3-4.9-20.0-4.5-1.10.3-0.7-0.40.4-2.2-0.70.5-0.10.30.3-0.80.32.63.31.30.70.1-0.20.8-1.2-2.6-3.00.6-0.9-0.9-3.6-20.0-4.40.3-1.60.10.21.40.12.13.81.63.11.71.72.73.33.92.72.12.4-0.32.3-4.5-1.1-1.92.1-4.90.5-4.6-22.0-5.5

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Change From Baseline in Body Temperature

Body temperature was measured in degree Celsius at each study visit (Month 1, Month 3, Month 6, Month 9, Month 12 and every 4 months after Month 12). Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionDegree Celsius (Mean)
Temperature, Mon 1, n=174Temperature, Mon 3, n=158Temperature, Mon 6, n=142Temperature, Mon 9, n=124Temperature, Mon 12, n=172Temperature, Mon 16, n=102Temperature, Mon 20, n=98Temperature, Mon 24, n=110Temperature, Mon 28, n=86Temperature, Mon 32, n=85Temperature, Mon 36, n=92Temperature, Mon 40, n=77Temperature, Mon 44, n=76Temperature, Mon 48, n=82Temperature, Mon 52, n=68Temperature, Mon 56, n=63Temperature, Mon 60, n=70Temperature, Mon 64, n=48Temperature, Mon 68, n=45Temperature, Mon 72, n=57Temperature, Mon 76, n=31Temperature, Mon 80, n=24Temperature, Mon 84, n=36Temperature, Mon 88, n=17Temperature, Mon 92, n=16Temperature, Mon 96, n=19Temperature, Mon 100, n=7Temperature, Mon 104, n=1Temperature, Mon 108, n=10
Overall Study-0.04-0.08-0.05-0.06-0.07-0.01-0.00-0.07-0.08-0.09-0.13-0.12-0.07-0.06-0.13-0.09-0.02-0.12-0.01-0.06-0.04-0.08-0.19-0.20-0.14-0.26-0.141.00-0.15

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Change From Baseline in Chemistry Parameter-Total Protein

Total Protein (TP) was assessed at Month 1, Month 3, , Month 6, Month 9, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles) (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionGrams per liter (g/L) (Mean)
TP Mon 1, n=170TP Mon 3, n=152TP Mon 6, n=137TP Mon 9, n=123TP Mon 12, n=169TP Mon 16, n=100TP Mon 20, n=97TP Mon 24, n=109TP Mon 28, n=87TP Mon 32, n=85TP Mon 36, n=89TP Mon 40, n=77TP Mon 44, n=73TP Mon 48, n=79TP Mon 52, n=67TP Mon 56, n=62TP Mon 60, n=69TP Mon 64, n=49TP Mon 68, n=41TP Mon 72, n=51TP Mon 76, n=30TP Mon 80, n=22TP Mon 84, n=34TP Mon 88, n=15TP Mon 92, n=15TP Mon 96, n=18TP Mon 100, n=6TP Mon 104, n=1TP Mon 108, n=9
Overall Study-1.1-0.5-1.0-0.80.20.30.80.2-0.20.1-1.1-1.1-0.1-1.3-0.7-1.1-0.7-0.20.6-0.70.80.30.70.41.00.92.07.02.1

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Change From Baseline in Chemistry Parameters -Creatinine, Total Bilirubin (TB), Uric Acid (UA)

Creatinine, Total bilirubin (TB), Uric acid (UA) were assessed at Month 1, Month 3, , Month 6, Month 9, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionMicromole per Liter (umol/L) (Mean)
Creatinine, Mon 1, n=170Creatinine, Mon 3, n=149Creatinine, Mon 6, n=133Creatinine, Mon 9, n=120Creatinine, Mon 12, n=167Creatinine, Mon 16, n=100Creatinine, Mon 20, n=94Creatinine, Mon 24, n=105Creatinine, Mon 28, n=86Creatinine, Mon 32, n=84Creatinine, Mon 36, n=88Creatinine, Mon 40, n=75Creatinine, Mon 44, n=73Creatinine, Mon 48, n=79Creatinine, Mon 52, n=67Creatinine, Mon 56, n=62Creatinine, Mon 60, n=69Creatinine, Mon 64, n=49Creatinine, Mon 68, n=39Creatinine, Mon 72, n=51Creatinine, Mon 76, n=30Creatinine, Mon 80, n=22Creatinine, Mon 84, n=34Creatinine, Mon 88, n=15Creatinine, Mon 92, n=15Creatinine, Mon 96, n=18Creatinine, Mon 100, n=6Creatinine, Mon 104, n=1Creatinine, Mon 108, n=9TB Mon 1, n=167TB Mon 3, n=150TB Mon 6, n=134TB Mon 9, n=120TB Mon 12, n=167TB Mon 16, n=100TB Mon 20, n=97TB Mon 24, n=109TB Mon 28, n=87TB Mon 32, n=85TB Mon 36, n=89TB Mon 40, n=77TB Mon 44, n=73TB Mon 48, n=78TB Mon 52, n=67TB Mon 56, n=62TB Mon 60, n=68TB Mon 64, n=48TB Mon 68, n=41TB Mon 72, n=51TB Mon 76, n=29TB Mon 80, n=22TB Mon 84, n=34TB Mon 88, n=15TB Mon 92, n=15TB Mon 96, n=18TB Mon 100, n=6TB Mon 104, n=1TB Mon 108, n=9UA Mon 1, n=170UA Mon 3, n=152UA Mon 6, n=137UA Mon 9, n=123UA Mon 12, n=169UA Mon 16, n=100UA Mon 20, n=97UA Mon 24, n=109UA Mon 28, n=87UA Mon 32, n=85UA Mon 36, n=89UA Mon 40, n=77UA Mon 44, n=73UA Mon 48, n=79UA Mon 52, n=67UA Mon 56, n=62UA Mon 60, n=69UA Mon 64, n=49UA Mon 68, n=41UA Mon 72, n=51UA Mon 76, n=30UA Mon 80, n=22UA Mon 84, n=34UA Mon 88, n=15UA Mon 92, n=15UA Mon 96, n=18UA Mon 100, n=6UA Mon 104, n=1UA Mon 108, n=9
Overall Study Arm344.93.74.54.03.01.9-1.00.0-0.90.1-1.0-0.20.11.2-0.20.60.70.10.53.31.61.24.31.26.29.05.34.64.53.83.62.73.63.72.62.82.42.22.72.62.22.02.12.11.61.20.81.01.3-0.32.11.3-0.21.29.0-0.30.83.12.94.56.62.52.34.712.210.25.36.94.35.74.28.68.12.75.412.611.97.05.73.1-6.05.335.7107.017.9

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Change From Baseline in Chemistry Parameters-Alkaline Phosphatase (AP), Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST)

Alkaline phosphatase (AP), Alanine aminotransferase (ALT), Aspartate aminotransferase (AST) were assessed at Month 1, Month 3, , Month 6, Month 9, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionInternational units per litre (IU/L) (Mean)
AP, Mon 1, n=151AP, Mon 3, n=136AP, Mon 6, n=122AP, Mon 9, n=108AP, Mon 12, n=149AP, Mon 16, n=87AP, Mon 20, n=85AP, Mon 24, n=95AP, Mon 28, n=75AP, Mon 32, n=73AP, Mon 36, n=77AP, Mon 40, n=67AP, Mon 44, n=63AP, Mon 48, n=70AP, Mon 52, n=59AP, Mon 56, n=54AP, Mon 60, n=61AP, Mon 64, n=44AP, Mon 68, n=36AP, Mon 72, n=46AP, Mon 76, n=26AP, Mon 80, n=21AP, Mon 84, n=30AP, Mon 88, n=15AP, Mon 92, n=15AP, Mon 96, n=18AP, Mon 100, n=6AP, Mon 104, n=1AP, Mon 108, n=9ALT, Mon 1, n=169ALT, Mon 3, n=152ALT, Mon 6, n=137ALT, Mon 9, n=122ALT, Mon 12, n=169ALT, Mon 16, n=100ALT, Mon 20, n=96ALT, Mon 24, n=108ALT, Mon 28, n=87ALT, Mon 32, n=85ALT, Mon 36, n=89ALT, Mon 40, n=77ALT, Mon 44, n=73ALT, Mon 48, n=78ALT, Mon 52, n=67ALT, Mon 56, n=62ALT, Mon 60, n=69ALT, Mon 64, n=48ALT, Mon 68, n=41ALT, Mon 72, n=51ALT, Mon 76, n=30ALT, Mon 80, n=22ALT, Mon 84, n=33ALT, Mon 88, n=15ALT, Mon 92, n=15ALT, Mon 96, n=18ALT, Mon 100, n=6ALT, Mon 104, n=1ALT, Mon 108, n=9AST, Mon 1, n=169AST, Mon 3, n=152AST, Mon 6, n=137AST, Mon 9, n=121AST, Mon 12, n=169AST, Mon 16, n=100AST, Mon 20, n=96AST, Mon 24, n=108AST, Mon 28, n=86AST, Mon 32, n=85AST, Mon 36, n=89AST, Mon 40, n=77AST, Mon 44, n=73AST, Mon 48, n=78AST, Mon 52, n=67AST, Mon 56, n=62AST, Mon 60, n=69AST, Mon 64, n=48AST, Mon 68, n=41AST, Mon 72, n=51AST, Mon 76, n=30AST, Mon 80, n=22AST, Mon 84, n=33AST, Mon 88, n=15AST, Mon 92, n=15AST, Mon 96, n=18AST, Mon 100, n=6AST, Mon 104, n=1AST, Mon 108, n=9
Overall Study Arm-5.5-5.7-7.3-7.7-6.1-9.1-5.0-7.1-6.3-7.8-4.8-6.3-8.2-7.5-9.7-9.9-7.7-2.8-8.7-4.5-5.0-8.9-1.7-9.9-6.5-3.9-12.311.0-14.23.14.01.25.24.5-0.31.13.02.22.01.72.54.13.02.31.41.00.2-0.50.40.60.41.1-1.32.12.20.8-6.0-1.32.93.21.76.03.92.12.94.14.35.63.95.04.64.76.04.35.43.85.35.14.94.65.62.93.33.13.72.01.8

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Change From Baseline in Chemistry Parameters-Bicarbonate, Blood Urea Nitrogen (BUN), Calcium, Chloride, Cholesterol, Non-fasting Glucose, Phosphorus, Potassium, Sodium, Urea

Bicarbonate (Bic.), BUN, Calcium (Ca), Chloride (Cl), Cholesterol (Cho.), Non-fasting glucose (NFG), Phosphorus (P), Potassium (Ka), Sodium (Na), Urea were assessed at Month 1, Month 3, , Month 6, Month 9, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionMillimole per liter (mmol/L) (Mean)
BUN, Mon 3, n=142BUN, Mon 6, n=130BUN, Mon 9, n=115BUN, Mon 12, n=156BUN, Mon 16, n=94BUN, Mon 20, n=92BUN, Mon 24, n=102BUN, Mon 28, n=82BUN, Mon 32, n=80BUN, Mon 36, n=85BUN, Mon 40, n=72BUN, Mon 44, n=69BUN, Mon 48, n=75BUN, Mon 52, n=62BUN, Mon 56, n=57BUN, Mon 60, n=64BUN, Mon 64, n=44BUN, Mon 68, n=37BUN, Mon 72, n=48BUN, Mon 76, n=27BUN, Mon 80, n=19BUN, Mon 84, n=30BUN, Mon 88, n=15BUN, Mon 92, n=15BUN, Mon 96, n=18BUN, Mon 100, n=6BUN, Mon 104, n=1BUN, Mon 108, n=9Ca, Mon 1, n=170Ca, Mon 3, n=152Ca, Mon 6, n=137Ca, Mon 9, n=123Ca, Mon 12, n=169Ca, Mon 16, n=100Ca, Mon 20, n=97Ca, Mon 24, n=109Ca, Mon 28, n=87Ca, Mon 32, n=85Ca, Mon 36, n=89Ca, Mon 40, n=77Ca, Mon 44, n=73Ca, Mon 48, n=80Ca, Mon 52, n=67Ca, Mon 56, n=62Ca, Mon 60, n=69Ca, Mon 64, n=49Ca, Mon 68, n=41Ca, Mon 72, n=51Ca, Mon 76, n=30Ca, Mon 80, n=22Ca, Mon 84, n=34Ca, Mon 88, n=15Ca, Mon 92, n=15Ca, Mon 96, n=18Ca, Mon 100, n=6Ca, Mon 104, n=1Ca, Mon 108, n=9Cho., Mon 3, n=151Cho., Mon 6, n=137Cho., Mon 9, n=122Cho., Mon 12, n=169Cho., Mon 16, n=100Cho., Mon 20, n=97Cho., Mon 24, n=109Cho., Mon 28, n=87Cho., Mon 32, n=85Cho., Mon 36, n=89Cho., Mon 40, n=77Cho., Mon 44, n=73Cho., Mon 48, n=79Cho., Mon 52, n=67Cho., Mon 56, n=62Cho., Mon 60, n=69Cho., Mon 64, n=49Cho., Mon 68, n=41Cho., Mon 72, n=51Cho., Mon 76, n=30Cho., Mon 80, n=22Cho., Mon 84, n=34Cho., Mon 88, n=15Cho., Mon 92, n=15Cho., Mon 96, n=18Cho., Mon 100, n=6Cho., Mon 104, n=1Cho., Mon 108, n=9NFG, Mon 1, n=170NFG, Mon 3, n=149NFG, Mon 6, n=133NFG, Mon 9, n=120NFG, Mon 12, n=166NFG, Mon 16, n=100NFG, Mon 20, n=94NFG, Mon 24, n=106NFG, Mon 28, n=86NFG, Mon 32, n=85NFG, Mon 36, n=89NFG, Mon 40, n=75NFG, Mon 44, n=72NFG, Mon 48, n=77NFG, Mon 52, n=67NFG, Mon 56, n=61NFG, Mon 60, n=69NFG, Mon 64, n=49NFG, Mon 68, n=39NFG, Mon 72, n=51NFG, Mon 76, n=30NFG, Mon 80, n=22NFG, Mon 84, n=34NFG, Mon 88, n=15NFG, Mon 92, n=15NFG, Mon 96, n=18NFG, Mon 100, n=6NFG, Mon 104, n=1NFG, Mon 108, n=9P, Mon 1, n=169P, Mon 3, n=148P, Mon 6, n=132P, Mon 9, n=119P, Mon 12, n=167P, Mon 16, n=100P, Mon 20, n=94P, Mon 24, n=105P, Mon 28, n=86P, Mon 32, n=84P, Mon 36, n=88P, Mon 40, n=75P, Mon 44, n=73P, Mon 48, n=78P, Mon 52, n=67P, Mon 56, n=62P, Mon 60, n=69P, Mon 64, n=49P, Mon 68, n=39P, Mon 72, n=51P, Mon 76, n=30P, Mon 80, n=22P, Mon 84, n=34P, Mon 88, n=15P, Mon 92, n=15P, Mon 96, n=18P, Mon 100, n=6P, Mon 104, n=1P, Mon 108, n=9Ka, Mon 1, n=169Ka, Mon 3, n=149Ka, Mon 6, n=132Ka, Mon 9, n=119Ka, Mon 12, n=167Ka, Mon 16, n=100Ka, Mon 20, n=93Ka, Mon 24, n=106Ka, Mon 28, n=86Ka, Mon 32, n=84Ka, Mon 36, n=88Ka, Mon 40, n=74Ka, Mon 44, n=74Ka, Mon 48, n=79Ka, Mon 52, n=67Ka, Mon 56, n=62Ka, Mon 60, n=69Ka, Mon 64, n=49Ka, Mon 68, n=40Ka, Mon 72, n=52Ka, Mon 76, n=30Ka, Mon 80, n=22Ka, Mon 84, n=34Ka, Mon 88, n=15Ka, Mon 92, n=15Ka, Mon 96, n=18Ka, Mon 100, n=6Ka, Mon 104, n=1Ka, Mon 108, n=9Na, Mon 1, n=170Na, Mon 3, n=153Na, Mon 6, n=137Na, Mon 9, n=123Na, Mon 12, n=170Na, Mon 16, n=100Na, Mon 20, n=97Na, Mon 24, n=110Na, Mon 28, n=87Na, Mon 32, n=85Na, Mon 36, n=89Na, Mon 40, n=77Na, Mon 44, n=74Na, Mon 48, n=80Na, Mon 52, n=67Na, Mon 56, n=62Na, Mon 60, n=69Na, Mon 64, n=49Na, Mon 68, n=42Na, Mon 72, n=52Na, Mon 76, n=30Na, Mon 80, n=22Na, Mon 84, n=34Na, Mon 88, n=15Na, Mon 92, n=15Na, Mon 96, n=18Na, Mon 100, n=6Na, Mon 104, n=1Na, Mon 108, n=9Urea, Mon 1, n=13Urea, Mon 3, n=10Urea, Mon 6, n=7Urea, Mon 9, n=8Urea, Mon 12, n=13Urea, Mon 16, n=6Urea, Mon 20, n=5Urea, Mon 24, n=8Urea, Mon 28, n=5Urea, Mon 32, n=5Urea, Mon 36, n=4Urea, Mon 40, n=5Urea, Mon 44, n=5Urea, Mon 48, n=5Urea, Mon 52, n=5Urea, Mon 56, n=5Urea, Mon 60, n=5Urea, Mon 64, n=5Urea, Mon 68, n=4Urea, Mon 72, n=3Urea, Mon 76, n=3Urea, Mon 80, n=3Urea, Mon 84, n=4Bicarbonate, Mon 1, n=169Bicarbonate, Mon 3, n=151Bicarbonate, Mon 6, n=136Bicarbonate, Mon 9, n=122Bicarbonate, Mon 12, n=169Bicarbonate, Mon 16, n=100Bicarbonate, Mon 20, n=97Bicarbonate, Mon 24, n=109Bicarbonate, Mon 28, n=87Bicarbonate, Mon 32, n=85Bicarbonate, Mon 36, n=89Bicarbonate, Mon 40, n=76Bicarbonate, Mon 44, n=73Bicarbonate, Mon 48, n=79Bicarbonate, Mon 52, n=66Bicarbonate, Mon 56, n=62Bicarbonate, Mon 60, n=69Bicarbonate, Mon 64, n=49Bicarbonate, Mon 68, n=42Bicarbonate, Mon 72, n=51Bicarbonate, Mon 76, n=30Bicarbonate, Mon 80, n=22Bicarbonate, Mon 84, n=34Bicarbonate, Mon 88, n=15Bicarbonate, Mon 92, n=15Bicarbonate, Mon 96, n=18Bicarbonate, Mon 100, n=6Bicarbonate, Mon 104, n=1Bicarbonate, Mon 108, n=9Cl, Mon 1, n=170Cl, Mon 3, n=153Cl, Mon 6, n=137Cl, Mon 9, n=123Cl, Mon 12, n=169Cl, Mon 16, n=100Cl, Mon 20, n=97Cl, Mon 24, n=110Cl, Mon 28, n=87Cl, Mon 32, n=85Cl, Mon 36, n=89Cl, Mon 40, n=77Cl, Mon 44, n=74Cl, Mon 48, n=80Cl, Mon 52, n=67Cl, Mon 56, n=61Cl, Mon 60, n=69Cl, Mon 64, n=49Cl, Mon 68, n=42Cl, Mon 72, n=52Cl, Mon 76, n=30Cl, Mon 80, n=22Cl, Mon 84, n=34Cl, Mon 88, n=15Cl, Mon 92, n=15Cl, Mon 96, n=18Cl, Mon 100, n=6Cl, Mon 104, n=1Cl, Mon 108, n=9
Overall Study Arm0.8430.9170.8230.7170.9731.0600.8090.8760.9420.9581.1350.8440.9521.0711.0221.1000.9911.1481.0871.2570.9390.9290.8811.3320.9161.2481.4300.183-0.034-0.0130.0120.0200.0240.0420.0520.0490.0340.0320.0320.0300.0400.0540.0470.0550.0610.0560.0830.0530.0970.0690.1060.0710.1160.1060.1480.1700.1390.0750.0690.1770.2220.3100.3040.2600.2610.2610.2120.2000.3480.1700.2990.3050.3600.2560.3520.2160.5550.4420.4590.4080.5260.3520.4830.1600.2780.110.200.180.380.200.180.260.130.220.160.190.200.020.270.050.140.190.210.320.240.170.150.23-0.090.140.220.25-0.500.210.0140.0010.0200.0210.007-0.0100.003-0.021-0.0200.0190.004-0.0050.0180.0190.0180.0100.0710.0270.0070.0290.0380.1070.046-0.0040.0580.0260.143-0.090-0.0680.020.040.030.08-0.030.020.10-0.00-0.010.010.040.000.160.120.200.080.130.190.280.240.250.350.240.380.550.410.321.100.511.51.41.81.51.11.31.10.81.41.21.31.61.41.21.52.21.62.32.82.53.73.52.93.42.82.93.58.03.80.7120.5330.3040.8460.7131.0700.8560.6681.4980.7841.3371.1400.7840.7120.3561.3561.2821.4961.6951.0701.0702.3801.6950.40.00.40.7-0.01.21.51.11.61.71.61.92.72.42.81.82.41.92.01.82.22.23.01.71.71.2-0.71.0-0.41.31.31.41.61.01.81.21.01.61.81.51.61.31.21.42.01.01.71.21.61.62.00.92.20.90.71.81.00.8

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Change From Baseline in Electrocardiogram (ECG) Parameter-QRS Axis

A 12-lead ECG was performed at each study visit during the first year of the study (Month 1, Month 3, Month 6, Month 9, Month 12) and annually after one year. ECG parameter QRS Axis is presented here. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionDegree (Mean)
QRS axis, Mon 1, n=167QRS axis, Mon 3, n=151QRS axis, Mon 6, n=134QRS axis, Mon 9, n=118QRS axis, Mon 12, n=160QRS axis, Mon 24, n=104QRS axis, Mon 36, n=87QRS axis, Mon 48, n=77QRS axis, Mon 60, n=68QRS axis, Mon 72, n=52QRS axis, Mon 84, n=34QRS axis, Mon 96, n=18QRS axis, Mon 108, n=10
Overall Study Arm-1.3-2.9-1.5-2.3-3.1-1.9-2.5-3.4-8.0-4.0-4.1-4.9-7.0

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Change From Baseline in Haematocrit

Haematocrit was assessed at Month 1, Month 2, Month 3, Month 6, Month 8, Month 9, Month 10, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionVolume/Volume (v/v) (Mean)
Haematocrit, Mon 1, n=165Haematocrit, Mon 2, n=15Haematocrit, Mon 3, n=153Haematocrit, Mon 4, n=26Haematocrit, Mon 6, n=136Haematocrit, Mon 8, n=41Haematocrit, Mon 9, n=120Haematocrit, Mon 10, n=55Haematocrit, Mon 12, n=162Haematocrit, Mon 16, n=98Haematocrit, Mon 20, n=94Haematocrit, Mon 24, n=109Haematocrit, Mon 28, n=84Haematocrit, Mon 32, n=85Haematocrit, Mon 36, n=91Haematocrit, Mon 40, n=77Haematocrit, Mon 44, n=73Haematocrit, Mon 48, n=76Haematocrit, Mon 52, n=67Haematocrit, Mon 56, n=62Haematocrit, Mon 60, n=71Haematocrit, Mon 64, n=49Haematocrit, Mon 68, n=44Haematocrit, Mon 72, n=53Haematocrit, Mon 76, n=31Haematocrit, Mon 80, n=23Haematocrit, Mon 84, n=34Haematocrit, Mon 88, n=16Haematocrit, Mon 92, n=14Haematocrit, Mon 96, n=18Haematocrit, Mon 100, n=6Haematocrit, Mon 108, n=9
Overall Study Arm-0.009-0.001-0.007-0.012-0.004-0.005-0.006-0.002-0.001-0.005-0.001-0.002-0.004-0.001-0.005-0.004-0.002-0.0090.001-0.0010.0050.0040.0110.0080.0140.0090.0070.0170.0270.0170.0280.030

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Change From Baseline in Haemoglobin

Haemoglobin was assessed at Month 1, Month 2, Month 3, , Month 6, Month 8, Month 9, Month 10, Month 12 and every 4 months after Month 12. Baseline assessment in this study is defined as the last assessment for the endpoint in parent study taken prior to the first active treatment with Retigabine. Change from Baseline was calculated as post-Baseline value minus Baseline value. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles). NA indicates that data were not available.. (NCT00310375)
Timeframe: Baseline and Up to Month 108

InterventionGrams/Liter (g/L) (Mean)
Haemoglobin, Mon 1, n=169Haemoglobin, Mon 2, n=15Haemoglobin, Mon 3, n=154Haemoglobin, Mon 4, n=26Haemoglobin, Mon 6, n=137Haemoglobin, Mon 8, n=43Haemoglobin, Mon 9, n=122Haemoglobin, Mon 10, n=55Haemoglobin, Mon 12, n=167Haemoglobin, Mon 16, n=98Haemoglobin, Mon 20, n=96Haemoglobin, Mon 24, n=110Haemoglobin, Mon 28, n=85Haemoglobin, Mon 32, n=86Haemoglobin, Mon 36, n=91Haemoglobin, Mon 40, n=78Haemoglobin, Mon 44, n=74Haemoglobin, Mon 48, n=79Haemoglobin, Mon 52, n=68Haemoglobin, Mon 56, n=63Haemoglobin, Mon 60, n=71Haemoglobin, Mon 64, n=49Haemoglobin, Mon 68, n=44Haemoglobin, Mon 72, n=53Haemoglobin, Mon 76, n=31Haemoglobin, Mon 80, n=24Haemoglobin, Mon 84, n=35Haemoglobin, Mon 88, n=16Haemoglobin, Mon 92, n=15Haemoglobin, Mon 96, n=19Haemoglobin, Mon 100, n=7Haemoglobin, Mon 104, n=1Haemoglobin, Mon 108, n=10
Overall Study Arm-3.2-0.9-2.6-5.7-2.2-1.9-2.9-0.9-0.7-2.5-1.4-2.2-3.2-2.2-3.3-3.4-2.3-4.3-2.0-2.8-2.9-3.7-2.0-3.8-3.1-3.7-3.8-3.10.7-2.12.68.00.5

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Number of Participants With a Clinically Significant Decrease in Visual Acuity From Initial Examination

A comprehensive eye examination was conducted by retina specialist or general ophthalmologist to assess best corrected visual acuity. An initial comprehensive eye examination was completed by an ophthalmologist for all participants. This exam was not associated with a specific visit. Thereafter, eye examinations was performed approximately every 6 months. Eye examination was introduced following protocol amendment and was conducted in all participants. Participants discontinued before implementation of this amendment and who have not had a comprehensive eye examination and skin examination (and follow-up by a dermatologist, if clinically indicated) were asked to return to the clinic for an evaluation of their skin (and follow-up dermatology examination, if clinically indicated) and for a comprehensive eye examination. Number of Par. with both initial and at least one follow-up exam while on RTG treatment were analyzed. (NCT00310375)
Timeframe: Assessed up to a maximum of 9 years

InterventionParticipants (Number)
Overall Study2

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Change From Baseline in Body Weight

Weight in pounds or kilograms was measured in ordinary indoor clothing (without shoes) and was recorded at all study visits during the Open-Label Treatment Phase of the study. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionKilograms (Mean)
Body weight, Visit 1 (Month 1), n=356Body weight, Visit 2 (Month 3), n=325Body weight, Visit 3 (Month 6), n=287Body weight, Visit 4 (Month 9), n=252Body weight, Visit 5 (Month 12), n=235Body weight, Visit 6 (Month 16), n=202Body weight, Visit 7 (Month 20), n=181Body weight, Visit 8 (Month 24), n=167Body weight, Visit 9 (Month 28), n=147Body weight, Visit 10 (Month 32), n=128Body weight, Visit 11 (Month 36), n=121Body weight, Visit 12 (Month 40), 112Body weight, Visit 13 (Month 44), n=105Body weight, Visit 14 (Month 48), n=104Body weight, Visit 15 (Month 52), n=91Body weight, Visit 16 (Month 56), n=77Body weight, Visit 17 (Month 60), n=91Body weight, Visit 18 (Month 64), n=58Body weight, Visit 19 (Month 68), n=53Body weight, Visit 20 (Month 72), n=61Body weight, Visit 21 (Month 76), n=43Body weight, Visit 22 (Month 80), n=37Body weight, Visit 23 (Month 84), n=32Body weight, Visit 24 (Month 88), n=29Body weight, Visit 25 (Month 92), n=25Body weight, Visit 26 (Month 96), n=26Body weight, Visit 27 (Month 100), n=20Body weight, Visit 28 (Month 104), n=17Body weight, Visit 29 (Month 108), n=13Body weight, Visit 30 (Month 112), n=4Body weight, Visit 31 (Month 116), n=3Body weight, Visit 32 (Month 120), n=1Body weight, Follow up, n=267
Retigabine1.191.371.511.081.561.981.791.201.671.752.072.121.091.080.660.711.311.321.491.651.712.302.001.120.830.121.571.622.324.859.730.501.34

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Change From Baseline in Body Temperature

Vital sign measurement temperature was obtained throughout the study at all visits during the Open-Label Treatment Phase of the study. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionDegree Celsius (Mean)
Body temperature, Visit 1 (Month 1), n=350Body temperature, Visit 2 (Month 3), n=318Body temperature, Visit 3 (Month 6), n=280Body temperature, Visit 4 (Month 9), n=244Body temperature, Visit 5 (Month 12), n=229Body temperature, Visit 6 (Month 16), n=197Body temperature, Visit 7 (Month 20), n=176Body temperature, Visit 8 (Month 24), n=161Body temperature, Visit 9 (Month 28), n=143Body temperature, Visit 10 (Month 32), n=125Body temperature, Visit 11 (Month 36), n=118Body temperature, Visit 12 (Month 40), n=109Body temperature, Visit 13 (Month 44), n=101Body temperature, Visit 14 (Month 48), n=100Body temperature, Visit 15 (Month 52), n=88Body temperature, Visit 16 (Month 56), n=74Body temperature, Visit 17 (Month 60), n=89Body temperature, Visit 18 (Month 64), n=58Body temperature, Visit 19 (Month 68), n=53Body temperature, Visit 20 (Month 72), n=59Body temperature, Visit 21 (Month 76), n=42Body temperature, Visit 22 (Month 80), n=37Body temperature, Visit 23 (Month 84), n=32Body temperature, Visit 24 (Month 88), n=29Body temperature, Visit 25 (Month 92), n=25Body temperature, Visit 26 (Month 96), n=26Body temperature, Visit 27 (Month 100), n=20Body temperature, Visit 28 (Month 104), n=17Body temperature, Visit 29 (Month 108), n=13Body temperature, Visit 30 (Month 112), n=4Body temperature, Visit 31 (Month 116), n=3Body temperature, Visit 32 (Month 120), n=1Body temperature, Follow up, n=261
Retigabine0.020.020.030.000.010.020.040.020.010.020.020.010.040.05-0.02-0.010.03-0.010.050.060.06-0.040.05-0.060.00-0.10-0.03-0.020.04-0.02-0.200.100.03

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Change From Baseline in Bicarbonate, Calcium, Chloride, Cholesterol, Non-fasting Glucose, Phosphorus, Potassium, Sodium and Urea

Clinical chemistry parameters included bicarbonate, calcium, chloride, cholesterol, Non-fasting Glucose, phosphorus, potassium, sodium and urea. Approximately 7-milliliter sample of blood was drawn for clinical chemistry assays. The clinical laboratory evaluations were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionMillimoles per liter (Mean)
Bicarbonate, Visit 1 (Month 1), n=344Bicarbonate, Visit 1a (Month 2), n=1Bicarbonate, Visit 2 (Month 3), n=316Bicarbonate, Visit 3 (Month 6), n=272Bicarbonate, Visit 4 (Month 9), n=243Bicarbonate, Visit 5 (Month 12), n=221Bicarbonate, Visit 6 (Month 16), n=196Bicarbonate, Visit 7 (Month 20), n=171Bicarbonate, Visit 8 (Month 24), n=159Bicarbonate, Visit 9 (Month 28), n=140Bicarbonate, Visit 10 (Month 32), n=126Bicarbonate, Visit 11 (Month 36), n=116Bicarbonate, Visit 12 (Month 40), n=107Bicarbonate, Visit 13 (Month 44), n=100Bicarbonate, Visit 14 (Month 48), n=101Bicarbonate, Visit 15 (Month 52), n=86Bicarbonate, Visit 16 (Month 56), n=76Bicarbonate, Visit 17 (Month 60), n=90Bicarbonate, Visit 18 (Month 64), n=55Bicarbonate, Visit 19 (Month 68), n=49Bicarbonate, Visit 20 (Month 72), n=56Bicarbonate, Visit 21 (Month 76), n=39Bicarbonate, Visit 22 (Month 80), n=35Bicarbonate, Visit 23 (Month 84), n=32Bicarbonate, Visit 24 (Month 88), n=28Bicarbonate, Visit 25 (Month 92), n=25Bicarbonate, Visit 26 (Month 96), n=25Bicarbonate, Visit 27 (Month 100), n=20Bicarbonate, Visit 28 (Month 104), n=15Bicarbonate, Visit 29 (Month 108), n=13Bicarbonate, Visit 30 (Month 112), n=4Bicarbonate, Visit 31 (Month 116), n=3Bicarbonate, Visit 32 (Month 120), n=1Bicarbonate, Follow up, n=256Calcium, Visit 1 (Month 1), n=352Calcium, Visit 1a (Month 2), n=1Calcium, Visit 2 (Month 3), n=322Calcium, Visit 2a (Month 4), n=1Calcium, Visit 3 (Month 6), n=279Calcium, Visit 4 (Month 9), n=248Calcium, Visit 5 (Month 12), n=228Calcium, Visit 6 (Month 16), n=200Calcium, Visit 7 (Month 20), n=176Calcium, Visit 8 (Month 24), n=163Calcium, Visit 9 (Month 28), n=142Calcium, Visit 10 (Month 32), n=126Calcium, Visit 11 (Month 36), n=116Calcium, Visit 12 (Month 40), n=108Calcium, Visit 13 (Month 44), n=101Calcium, Visit 14 (Month 48), n=101Calcium, Visit 15 (Month 52), n=88Calcium, Visit 16 (Month 56), n=76Calcium, Visit 17 (Month 60), n=90Calcium, Visit 18 (Month 64), n=55Calcium, Visit 19 (Month 68), n=51Calcium, Visit 20 (Month 72), n=58Calcium, Visit 21 (Month 76), n=40Calcium, Visit 22 (Month 80), n=35Calcium, Visit 23 (Month 84), n=32Calcium, Visit 24 (Month 88), n=28Calcium, Visit 25 (Month 92), n=25Calcium, Visit 26 (Month 96), n=26Calcium, Visit 27 (Month 100), n=20Calcium, Visit 28 (Month 104), n=16Calcium, Visit 29 (Month 108), n=13Calcium, Visit 30 (Month 112), n=4Calcium, Visit 31 (Month 116), n=3Calcium, Visit 32 (Month 120), n=1Calcium, Follow up, n=261Chloride, Visit 1 (Month 1), n=352Chloride, Visit 1a (Month 2), n=1Chloride, Visit 2 (Month 3), n=322Chloride, Visit 2a (Month 4), n=1Chloride, Visit 3 (Month 6), n=279Chloride, Visit 4 (Month 9), n=248Chloride, Visit 5 (Month 12), n=228Chloride, Visit 6 (Month 16), n=200Chloride, Visit 7 (Month 20), n=176Chloride, Visit 8 (Month 24), n=164Chloride, Visit 9 (Month 28), n=143Chloride, Visit 10 (Month 32), n=127Chloride, Visit 11 (Month 36), n=118Chloride, Visit 12 (Month 40), n=108Chloride, Visit 13 (Month 44), n=103Chloride, Visit 14 (Month 48), n=102Chloride, Visit 15 (Month 52), n=89Chloride, Visit 16 (Month 56), n=76Chloride, Visit 17 (Month 60), n=91Chloride, Visit 18 (Month 64), n=55Chloride, Visit 19 (Month 68), n=51Chloride, Visit 20 (Month 72), n=58Chloride, Visit 21 (Month 76), n=40Chloride, Visit 22 (Month 80), n=35Chloride, Visit 23 (Month 84), n=32Chloride, Visit 24 (Month 88), n=28Chloride, Visit 25 (Month 92), n=25Chloride, Visit 26 (Month 96), n=26Chloride, Visit 27 (Month 100), n=20Chloride, Visit 28 (Month 104), n=16Chloride, Visit 29 (Month 108), n=13Chloride,Visit 30 (Month 112), n=4Chloride,Visit 31 (Month 116), n=3Chloride, Visit 32 (Month 120), n=1Chloride, Follow up, n=261Cholesterol, Visit 1 (Month 1), n=352Cholesterol, Visit 1a (Month 2), n=1Cholesterol, Visit 2 (Month 3), n=322Cholesterol, Visit 2a (Month 4), n=1Cholesterol, Visit 3 (Month 6), n=279Cholesterol, Visit 4 (Month 9), n=248Cholesterol, Visit 5 (Month 12), n=228Cholesterol, Visit 6 (Month 16), n=200Cholesterol, Visit 7 (Month 20), n=176Cholesterol, Visit 8 (Month 24), n=163Cholesterol, Visit 9 (Month 28), n=142Cholesterol, Visit 10 (Month 32), n=126Cholesterol, Visit 11 (Month 36), n=116Cholesterol, Visit 12 (Month 40), n=108Cholesterol, Visit 13 (Month 44), n=101Cholesterol, Visit 14 (Month 48), n=101Cholesterol, Visit 15 (Month 52), n=88Cholesterol, Visit 16 (Month 56), n=76Cholesterol, Visit 17 (Month 60), n=90Cholesterol, Visit 18 (Month 64), n=55Cholesterol, Visit 19 (Month 68), n=50Cholesterol, Visit 20 (Month 72), n=58Cholesterol, Visit 21 (Month 76), n=40Cholesterol, Visit 22 (Month 80), n=35Cholesterol, Visit 23 (Month 84), n=32Cholesterol, Visit 24 (Month 88), n=28Cholesterol, Visit 25 (Month 92), n=25Cholesterol, Visit 26 (Month 96), n=26Cholesterol, Visit 27 (Month 100), n=20Cholesterol, Visit 28 (Month 104), n=16Cholesterol, Visit 29 (Month 108), n=13Cholesterol, Visit 30 (Month 112), n=4Cholesterol, Visit 31 (Month 116), n=3Cholesterol, Visit 32 (Month 120), n=1Cholesterol, Follow up, n=261Non-fasting Glucose, Visit 1 (Month 1), n=351Non-fasting Glucose, Visit 1a (Month 2), n=1Non-fasting Glucose, Visit 2 (Month 3), n=321Non-fasting Glucose, Visit 2a (Month 4), n=1Non-fasting Glucose, Visit 3 (Month 6), n=278Non-fasting Glucose, Visit 4 (Month 9), n=247Non-fasting Glucose, Visit 5 (Month 12), n=227Non-fasting Glucose, Visit 6 (Month 16), n=199Non-fasting Glucose, Visit 7 (Month 20), n=176Non-fasting Glucose, Visit 8 (Month 24), n=161Non-fasting Glucose, Visit 9 (Month 28), n=142Non-fasting Glucose, Visit 10 (Month 32), n=126Non-fasting Glucose, Visit 11 (Month 36), n=115Non-fasting Glucose, Visit 12 (Month 40), n=108Non-fasting Glucose, Visit 13 (Month 44), n=100Non-fasting Glucose, Visit 14 (Month 48), n=101Non-fasting Glucose, Visit 15 (Month 52), n=88Non-fasting Glucose, Visit 16 (Month 56), n=75Non-fasting Glucose, Visit 17 (Month 60), n=89Non-fasting Glucose, Visit 18 (Month 64), n=55Non-fasting Glucose, Visit 19 (Month 68), n=49Non-fasting Glucose, Visit 20 (Month 72), n=58Non-fasting Glucose, Visit 21 (Month 76), n=40Non-fasting Glucose, Visit 22 (Month 80), n=35Non-fasting Glucose, Visit 23 (Month 84), n=32Non-fasting Glucose, Visit 24 (Month 88), n=28Non-fasting Glucose, Visit 25 (Month 92), n=25Non-fasting Glucose, Visit 26 (Month 96), n=26Non-fasting Glucose, Visit 27 (Month 100), n=20Non-fasting Glucose, Visit 28 (Month 104), n=16Non-fasting Glucose, Visit 29 (Month 108), n=13Non-fasting Glucose, Visit 30 (Month 112), n=4Non-fasting Glucose, Visit 31 (Month 116), n=3Non-fasting Glucose, Visit 32 (Month 120), n=1Non-fasting Glucose, Follow up, n=259Phosphorus, Visit 1 (Month 1), n=351Phosphorus, Visit 1a (Month 2), n=1Phosphorus, Visit 2 (Month 3), n=320Phosphorus, Visit 2a (Month 4), n=1Phosphorus, Visit 3 (Month 6), n=278Phosphorus, Visit 4 (Month 9), n=247Phosphorus, Visit 5 (Month 12), n=227Phosphorus, Visit 6 (Month 16), n=199Phosphorus, Visit 7 (Month 20), n=176Phosphorus, Visit 8 (Month 24), n=161Phosphorus, Visit 9 (Month 28), n=142Phosphorus, Visit 10 (Month 32), n=126Phosphorus, Visit 11 (Month 36), n=115Phosphorus, Visit 12 (Month 40), n=108Phosphorus, Visit 13 (Month 44), n=100Phosphorus, Visit 14 (Month 48), n=101Phosphorus, Visit 15 (Month 52), n=88Phosphorus, Visit 16 (Month 56), n=75Phosphorus, Visit 17 (Month 60), n=89Phosphorus, Visit 18 (Month 64), n=55Phosphorus, Visit 19 (Month 68), n=49Phosphorus, Visit 20 (Month 72), n=58Phosphorus, Visit 21 (Month 76), n=40Phosphorus, Visit 22 (Month 80), n=35Phosphorus, Visit 23 (Month 84), n=32Phosphorus, Visit 24 (Month 88), n=28Phosphorus, Visit 25 (Month 92), n=25Phosphorus, Visit 26 (Month 96), n=26Phosphorus, Visit 27 (Month 100), n=20Phosphorus, Visit 28 (Month 104), n=16Phosphorus, Visit 29 (Month 108), n=13Phosphorus, Visit 30 (Month 112), n=4Phosphorus, Visit 31 (Month 116), n=3Phosphorus, Visit 32 (Month 120), n=1Phosphorus, Follow up, n=260Potassium, Visit 1 (Month 1), n=351Potassium, Visit 1a (Month 2), n=1Potassium, Visit 2 (Month 3), n=322Potassium, Visit 2a (Month 4), n=1Potassium, Visit 3 (Month 6), n=279Potassium, Visit 4 (Month 9), n=247Potassium, Visit 5 (Month 12), n=230Potassium, Visit 6 (Month 16), n=199Potassium, Visit 7 (Month 20), n=174Potassium, Visit 8 (Month 24), n=162Potassium, Visit 9 (Month 28), n=143Potassium, Visit 10 (Month 32), n=127Potassium, Visit 11 (Month 36), n=116Potassium, Visit 12 (Month 40), n=108Potassium, Visit 13 (Month 44), n=102Potassium, Visit 14 (Month 48), n=101Potassium, Visit 15 (Month 52), n=89Potassium, Visit 16 (Month 56), n=75Potassium, Visit 17 (Month 60), n=89Potassium, Visit 18 (Month 64), n=55Potassium, Visit 19 (Month 68), n=50Potassium, Visit 20 (Month 72), n=58Potassium, Visit 21 (Month 76), n=39Potassium, Visit 22 (Month 80), n=35Potassium, Visit 23 (Month 84), n=32Potassium, Visit 24 (Month 88), n=28Potassium, Visit 25 (Month 92), n=25Potassium, Visit 26 (Month 96), n=26Potassium, Visit 27 (Month 100), n=20Potassium, Visit 28 (Month 104), n=16Potassium, Visit 29 (Month 108), n=13Potassium, Visit 30 (Month 112), n=4Potassium, Visit 31 (Month 116), n=3Potassium, Visit 32 (Month 120), n=1Potassium, Follow up, n=258Sodium, Visit 1 (Month 1), n=352Sodium, Visit 1a (Month 2), n=1Sodium, Visit 2 (Month 3), n=324Sodium, Visit 2a (Month 4), n=1Sodium, Visit 3 (Month 6), n=280Sodium, Visit 4 (Month 9), n=248Sodium, Visit 5 (Month 12), n=231Sodium, Visit 6 (Month 16), n=200Sodium, Visit 7 (Month 20), n=176Sodium, Visit 8 (Month 24), n=164Sodium, Visit 9 (Month 28), n=143Sodium, Visit 10 (Month 32), n=127Sodium, Visit 11 (Month 36), n=118Sodium, Visit 12 (Month 40), n=108Sodium, Visit 13 (Month 44), n=103Sodium, Visit 14 (Month 48), n=102Sodium, Visit 15 (Month 52), n=89Sodium, Visit 16 (Month 56), n=76Sodium, Visit 17 (Month 60), n=91Sodium, Visit 18 (Month 64), n=55Sodium, Visit 19 (Month 68), n=51Sodium, Visit 20 (Month 72), n=58Sodium, Visit 21 (Month 76), n=40Sodium, Visit 22 (Month 80), n=35Sodium, Visit 23 (Month 84), n=32Sodium, Visit 24 (Month 88), n=28Sodium, Visit 25 (Month 92), n=25Sodium, Visit 26 (Month 96), n=26Sodium, Visit 27 (Month 100), n=20Sodium, Visit 28 (Month 104), n=16Sodium, Visit 29 (Month 108), n=13Sodium, Visit 30 (Month 112), n=4Sodium, Visit 31 (Month 116), n=3Sodium, Visit 32 (Month 120), n=1Sodium, Follow up, n=261Urea, Visit 1 (Month 1), n=351Urea, Visit 1a (Month 2), n=1Urea, Visit 2 (Month 3), n=322Urea, Visit 2a (Month 4), n=1Urea, Visit 3 (Month 6), n=279Urea, Visit 4 (Month 9), n=248Urea, Visit 5 (Month 12), n=228Urea, Visit 6 (Month 16), n=200Urea, Visit 7 (Month 20), n=176Urea, Visit 8 (Month 24), n=163Urea, Visit 9 (Month 28), n=142Urea, Visit 10 (Month 32), n=126Urea, Visit 11 (Month 36), n=117Urea, Visit 12 (Month 40), n=108Urea, Visit 13 (Month 44), n=102Urea, Visit 14 (Month 48), n=101Urea, Visit 15 (Month 52), n=88Urea, Visit 16 (Month 56), n=76Urea, Visit 17 (Month 60), n=90Urea, Visit 18 (Month 64), n=55Urea, Visit 19 (Month 68), n=51Urea, Visit 20 (Month 72), n=58Urea, Visit 21 (Month 76), n=40Urea, Visit 22 (Month 80), n=35Urea, Visit 23 (Month 84), n=32Urea, Visit 24 (Month 88), n=28Urea, Visit 25 (Month 92), n=25Urea, Visit 26 (Month 96), n=26Urea, Visit 27 (Month 100), n=20Urea, Visit 28 (Month 104), n=16Urea, Visit 29 (Month 108), n=13Urea, Visit 30 (Month 112), n=4Urea, Visit 31 (Month 116), n=3Urea, Visit 32 (Month 120), n=1Urea, Follow up, n=260
Retigabine-0.2-2.0-0.30.0-0.3-0.8-0.2-0.2-0.2-0.1-0.5-0.40.00.4-0.10.5-0.1-0.1-0.7-1.1-1.2-0.2-1.0-1.3-0.7-1.8-1.0-1.3-1.9-1.8-2.03.32.0-1.00.000-0.2500.008-0.1000.0180.0220.0100.0050.0050.0140.0150.0230.0170.0350.0280.0250.0200.0160.008-0.0070.019-0.0120.0200.0790.0380.0340.0890.0750.1210.0910.0800.1330.053-0.0400.0310.11.00.32.00.91.01.21.82.01.82.11.31.32.42.21.22.01.61.32.30.90.20.60.81.10.8-0.4-0.40.1-1.1-1.0-3.0-2.3-3.00.30.066-0.3600.108-0.4700.0620.0620.0750.1010.0010.087-0.001-0.028-0.087-0.001-0.043-0.128-0.0570.0260.0160.0540.074-0.0480.1030.0960.0770.3100.3270.4890.3700.3540.1411.7751.1230.050-0.0700.06-0.300.170.400.120.160.160.100.020.120.040.030.080.060.07-0.040.080.190.080.140.050.160.030.29-0.010.140.280.500.180.740.250.650.70-0.300.180.0170.0300.0140.160-0.001-0.009-0.016-0.023-0.022-0.012-0.011-0.005-0.026-0.030-0.026-0.050-0.054-0.052-0.047-0.059-0.047-0.076-0.074-0.071-0.068-0.115-0.130-0.098-0.197-0.261-0.300-0.065-0.260-0.320-0.038-0.02-0.40-0.050.40-0.04-0.08-0.070.00-0.02-0.03-0.01-0.01-0.01-0.05-0.06-0.01-0.010.00-0.05-0.12-0.03-0.10-0.11-0.080.01-0.05-0.01-0.02-0.09-0.18-0.09-0.38-0.83-0.30-0.02-0.30.0-0.11.00.80.50.60.91.11.01.61.21.31.91.71.11.81.71.82.72.21.02.22.02.41.91.41.81.80.90.5-0.30.7-5.00.30.5832.8600.6061.7800.6230.6420.5990.6560.7500.6520.5780.7480.5520.7940.6970.7920.8280.7420.7780.7660.7910.7941.1520.9390.7810.7910.5290.8110.5010.5360.5230.9830.837-1.0700.158

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Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Platelet Count, White Blood Cells (WBC)

Hematology parameters included eosinophils, basophils lymphocytes, monocytes, neutrophils, platelet count , and WBC. The clinical laboratory evaluations were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

Intervention10^9 cells per Liter (Mean)
Basophils, Visit 1 (Month 1), n=345Basophils, Visit 1a (Month 2), n=64Basophils, Visit 2 (Month 3), n=309Basophils, Visit 2a (Month 4), n=82Basophils, Visit 3 (Month 6), n=273Basophils, Visit 3a (Month 8), n=97Basophils, Visit 4 (Month 9), n=239Basophils, Visit 4a (Month 10), n=111Basophils, Visit 5 (Month 12), n=225Basophils, Visit 6 (Month 16), n=198Basophils, Visit 7 (Month 20), n=173Basophils, Visit 8 (Month 24), n=159Basophils, Visit 9 (Month 28), n=139Basophils, Visit 10 (Month 32), n=125Basophils, Visit 11 (Month 36), n=112Basophils, Visit 12 (Month 40), n=108Basophils, Visit 13 (Month 44), n=98Basophils, Visit 14 (Month 48), n=100Basophils, Visit 15 (Month 52), n=88Basophils, Visit 16 (Month 56), n=75Basophils, Visit 17 (Month 60), n=89Basophils, Visit 18 (Month 64), n=51Basophils, Visit 19 (Month 68), n=50Basophils, Visit 20 (Month 72), n=54Basophils, Visit 21 (Month 76), n=39Basophils, Visit 22 (Month 80), n=35Basophils, Visit 23 (Month 84), n=32Basophils, Visit 24 (Month 88), n=27Basophils, Visit 25 (Month 92), n=25Basophils, Visit 26 (Month 96), n=24Basophils, Visit 27 (Month 100), n=20Basophils, Visit 28 (Month 104), n=16Basophils, Visit 29 (Month 108), n=13Basophils, Visit 30 (Month 112), n=4Basophils, Visit 31 (Month 116), n=3Basophils, Visit 32 (Month 120), n=1Basophils, Follow up, n=252Eosinophils, Visit 1 (Month 1), n=345Eosinophils, Visit 1a (Month 2), n=64Eosinophils, Visit 2 (Month 3), n=309Eosinophils, Visit 2a (Month 4), n=82Eosinophils, Visit 3 (Month 6), n=273Eosinophils, Visit 3a (Month 8), n=97Eosinophils, Visit 4 (Month 9), n=239Eosinophils, Visit 4a (Month 10), n=111Eosinophils, Visit 5 (Month 12), n=225Eosinophils, Visit 6 (Month 16), n=198Eosinophils, Visit 7 (Month 20), n=173Eosinophils, Visit 8 (Month 24), n=159Eosinophils, Visit 9 (Month 28), n=139Eosinophils, Visit 10 (Month 32), n=125Eosinophils, Visit 11 (Month 36), n=112Eosinophils, Visit 12 (Month 40), n=108Eosinophils, Visit 13 (Month 44), n=98Eosinophils, Visit 14 (Month 48), n=100Eosinophils, Visit 15 (Month 52), n=88Eosinophils, Visit 16 (Month 56), n=75Eosinophils, Visit 17 (Month 60), n=88Eosinophils, Visit 18 (Month 64), n=51Eosinophils, Visit 19 (Month 68), n=50Eosinophils, Visit 20 (Month 72), n=54Eosinophils, Visit 21 (Month 76), n=39Eosinophils, Visit 22 (Month 80), n=35Eosinophils, Visit 23 (Month 84), n=32Eosinophils, Visit 24 (Month 88), n=27Eosinophils, Visit 25 (Month 92), n=25Eosinophils, Visit 26 (Month 96), n=24Eosinophils, Visit 27 (Month 100), n=20Eosinophils, Visit 28 (Month 104), n=16Eosinophils, Visit 29 (Month 108), n=13Eosinophils, Visit 30 (Month 112), n=4Eosinophils, Visit 31 (Month 116), n=3Eosinophils, Visit 32 (Month 120), n=1Eosinophils, Follow up, n=252Lymphocytes, Visit 1 (Month 1), n=345Lymphocytes, Visit 1a (Month 2), n=64Lymphocytes, Visit 2 (Month 3), n=309Lymphocytes, Visit 2a (Month 4), n=82Lymphocytes, Visit 3 (Month 6), n=273Lymphocytes, Visit 3a (Month 8), n=97Lymphocytes, Visit 4 (Month 9), n=239Lymphocytes, Visit 4a (Month 10), n=111Lymphocytes, Visit 5 (Month 12), n=225Lymphocytes, Visit 6 (Month 16), n=198Lymphocytes, Visit 7 (Month 20), n=173Lymphocytes, Visit 8 (Month 24), n=159Lymphocytes, Visit 9 (Month 28), n=139Lymphocytes, Visit 10 (Month 32), n=125Lymphocytes, Visit 11 (Month 36), n=112Lymphocytes, Visit 12 (Month 40), n=108Lymphocytes, Visit 13 (Month 44), n=98Lymphocytes, Visit 14 (Month 48), n=100Lymphocytes, Visit 15 (Month 52), n=88Lymphocytes, Visit 16 (Month 56), n=75Lymphocytes, Visit 17 (Month 60), n=88Lymphocytes, Visit 18 (Month 64), n=51Lymphocytes, Visit 19 (Month 68), n=50Lymphocytes, Visit 20 (Month 72), n=54Lymphocytes, Visit 21 (Month 76), n=39Lymphocytes, Visit 22 (Month 80), n=35Lymphocytes, Visit 23 (Month 84), n=32Lymphocytes, Visit 24 (Month 88), n=27Lymphocytes, Visit 25 (Month 92), n=25Lymphocytes, Visit 26 (Month 96), n=24Lymphocytes, Visit 27 (Month 100), n=20Lymphocytes, Visit 28 (Month 104), n=16Lymphocytes, Visit 29 (Month 108), n=13Lymphocytes, Visit 30 (Month 112), n=4Lymphocytes, Visit 31 (Month 116), n=3Lymphocytes, Visit 32 (Month 120), n=1Lymphocytes, Follow up, n=252Monocytes, Visit 1 (Month 1), n=345Monocytes, Visit 1a (Month 2), n=64Monocytes, Visit 2 (Month 3), n=309Monocytes, Visit 2a (Month 4), n=82Monocytes, Visit 3 (Month 6), n=273Monocytes, Visit 3a (Month 8), n=97Monocytes, Visit 4 (Month 9), n=239Monocytes, Visit 4a (Month 10), n=111Monocytes, Visit 5 (Month 12), n=225Monocytes, Visit 6 (Month 16), n=198Monocytes, Visit 7 (Month 20), n=173Monocytes, Visit 8 (Month 24), n=159Monocytes, Visit 9 (Month 28), n=139Monocytes, Visit 10 (Month 32), n=125Monocytes, Visit 11 (Month 36), n=112Monocytes, Visit 12 (Month 40), n=108Monocytes, Visit 13 (Month 44), n=98Monocytes, Visit 14 (Month 48), n=100Monocytes, Visit 15 (Month 52), n=88Monocytes, Visit 16 (Month 56), n=75Monocytes, Visit 17 (Month 60), n=88Monocytes, Visit 18 (Month 64), n=51Monocytes, Visit 19 (Month 68), n=50Monocytes, Visit 20 (Month 72), n=54Monocytes, Visit 21 (Month 76), n=39Monocytes, Visit 22 (Month 80), n=35Monocytes, Visit 23 (Month 84), n=32Monocytes, Visit 24 (Month 88), n=27Monocytes, Visit 25 (Month 92), n=25Monocytes, Visit 26 (Month 96), n=24Monocytes, Visit 27 (Month 100), n=20Monocytes, Visit 28 (Month 104), n=16Monocytes, Visit 29 (Month 108), n=13Monocytes, Visit 30 (Month 112), n=4Monocytes, Visit 31 (Month 116), n=3Monocytes, Visit 32 (Month 120), n=1Monocytes, Follow up, n=252Neutrophils, Visit 1 (Month 1), n=345Neutrophils, Visit 1a (Month 2), n=64Neutrophils, Visit 2 (Month 3), n=309Neutrophils, Visit 2a (Month 4), n=82Neutrophils, Visit 3 (Month 6), n=273Neutrophils, Visit 3a (Month 8), n=97Neutrophils, Visit 4 (Month 9), n=239Neutrophils, Visit 4a (Month 10), n=111Neutrophils, Visit 5 (Month 12), n=225Neutrophils, Visit 6 (Month 16), n=198Neutrophils, Visit 7 (Month 20), n=173Neutrophils, Visit 8 (Month 24), n=159Neutrophils, Visit 9 (Month 28), n=139Neutrophils, Visit 10 (Month 32), n=125Neutrophils, Visit 11 (Month 36), n=112Neutrophils, Visit 12 (Month 40), n=108Neutrophils, Visit 13 (Month 44), n=98Neutrophils, Visit 14 (Month 48), n=100Neutrophils, Visit 15 (Month 52), n=88Neutrophils, Visit 16 (Month 56), n=75Neutrophils, Visit 17 (Month 60), n=88Neutrophils, Visit 18 (Month 64), n=51Neutrophils, Visit 19 (Month 68), n=50Neutrophils, Visit 20 (Month 72), n=54Neutrophils, Visit 21 (Month 76), n=39Neutrophils, Visit 22 (Month 80), n=35Neutrophils, Visit 23 (Month 84), n=32Neutrophils, Visit 24 (Month 88), n=27Neutrophils, Visit 25 (Month 92), n=25Neutrophils, Visit 26 (Month 96), n=24Neutrophils, Visit 27 (Month 100), n=20Neutrophils, Visit 28 (Month 104), n=16Neutrophils, Visit 29 (Month 108), n=13Neutrophils, Visit 30 (Month 112), n=4Neutrophils, Visit 31 (Month 116), n=3Neutrophils, Visit 32 (Month 120), n=1Neutrophils, Follow up, n=252Platelet Count, Visit 1 (Month 1), n=345Platelet count, Visit 1a (Month 2), n=65Platelet count, Visit 2 (Month 3), n=311Platelet count, Visit 2a (Month 4), n=82Platelet count, Visit 3 (Month 6), n=273Platelet count, Visit 3a (Month 8), n=99Platelet count, Visit 4 (Month 9), n=241Platelet count, Visit 4a (Month 10), n=108Platelet count, Visit 5 (Month 12), n=225Platelet count, Visit 6 (Month 16), n=196Platelet count, Visit 7 (Month 20), n=171Platelet count, Visit 8 (Month 24), n=162Platelet count, Visit 9 (Month 28), n=137Platelet count, Visit 10 (Month 32), n=124Platelet count, Visit 11 (Month 36), n=114Platelet count, Visit 12 (Month 40), n=108Platelet count, Visit 13 (Month 44), n=98Platelet count, Visit 14 (Month 48), n=98Platelet count, Visit 15 (Month 52), n=84Platelet count, Visit 16 (Month 56), n=75Platelet count, Visit 17 (Month 60), n=88Platelet count, Visit 18 (Month 64), n=54Platelet count, Visit 19 (Month 68), n=50Platelet count, Visit 20 (Month 72), n=53Platelet count, Visit 21 (Month 76), n=40Platelet count, Visit 22 (Month 80), n=34Platelet count, Visit 23 (Month 84), n=31Platelet count, Visit 24 (Month 88), n=25Platelet count, Visit 25 (Month 92), n=25Platelet count, Visit 26 (Month 96), n=24Platelet count, Visit 27 (Month 100), n=20Platelet count, Visit 28 (Month 104), n=16Platelet count, Visit 29 (Month 108), n=13Platelet count, Visit 30 (Month 112), n=4Platelet count, Visit 31 (Month 116), n=3Platelet count, Visit 32 (Month 120), n=1Platelet count, Follow up, n=249WBC, Visit 1 (Month 1), n=349WBC, Visit 1a (Month 2), n=65WBC, Visit 2 (Month 3), n=315WBC, Visit 2a (Month 4), n=82WBC, Visit 3 (Month 6), n=278WBC, Visit 3a (Month 8), n=99WBC, Visit 4 (Month 9), n=244WBC, Visit 4a (Month 10), n=113WBC, Visit 5 (Month 12), n=226WBC, Visit 6 (Month 16), n=199WBC, Visit 7 (Month 20), n=174WBC, Visit 8 (Month 24), n=164WBC, Visit 9 (Month 28), n=142WBC, Visit 10 (Month 32), n=126WBC, Visit 11 (Month 36), n=115WBC, Visit 12 (Month 40), n=109WBC, Visit 13 (Month 44), n=98WBC, Visit 14 (Month 48), n=101WBC, Visit 15 (Month 52), n=88WBC, Visit 16 (Month 56), n=76WBC, Visit 17 (Month 60), n=89WBC, Visit 18 (Month 64), n=54WBC, Visit 19 (Month 68), n=50WBC, Visit 20 (Month 72), n=55WBC, Visit 21 (Month 76), n=40WBC, Visit 22 (Month 80), n=35WBC, Visit 23 (Month 84), n=32WBC, Visit 24 (Month 88), n=27WBC, Visit 25 (Month 92), n=25WBC, Visit 26 (Month 96), n=24WBC, Visit 27 (Month 100), n=20WBC, Visit 28 (Month 104), n=16WBC, Visit 29 (Month 108), n=13WBC, Visit 30 (Month 112), n=4WBC, Visit 31 (Month 116), n=3WBC, Visit 32 (Month 120), n=1WBC, Follow up, n=255
Retigabine0.0030.0130.0010.0210.0030.0050.0000.0030.0020.0020.0030.0010.0050.0080.0050.0070.0020.0020.0050.0060.0060.0050.0060.0050.0090.0040.0090.0040.0130.0100.0100.0080.0050.003-0.003-0.0200.001-0.006-0.018-0.006-0.002-0.009-0.0100.001-0.003-0.005-0.012-0.008-0.007-0.013-0.007-0.004-0.006-0.007-0.018-0.008-0.0080.009-0.001-0.008-0.0020.0000.0000.015-0.022-0.004-0.0070.0320.0410.0620.1850.043-0.020-0.010-0.127-0.029-0.147-0.089-0.124-0.104-0.1370.007-0.118-0.130-0.103-0.091-0.099-0.103-0.135-0.114-0.057-0.117-0.055-0.049-0.0340.0040.0770.0000.1130.1100.1660.1330.144-0.0010.1720.1410.1930.2780.367-0.1300.0220.0240.0850.0170.0710.0220.0730.0220.0800.0280.0230.0190.0380.0560.0470.0490.0400.0370.0330.0650.0430.0440.0280.0270.0390.0780.0460.0640.0650.0570.0350.1190.0390.0680.030-0.0070.0800.022-0.143-0.142-0.0450.075-0.087-0.0980.0320.2030.0150.0860.1210.3680.1880.1180.0570.1960.2430.0950.4320.4120.4160.2960.4360.5520.6390.3460.5600.3660.1300.7070.2470.458-0.0270.6580.2970.470-0.0100.96.40.712.7-1.7-5.3-7.1-2.8-8.6-9.0-15.8-17.3-18.0-20.8-25.8-24.3-22.4-25.2-22.3-17.1-18.6-23.1-17.7-20.4-11.1-10.0-7.0-22.1-16.8-4.91.9-6.3-9.510.0-5.725.0-9.4-0.25-0.11-0.220.07-0.20-0.15-0.080.28-0.09-0.060.010.250.100.09-0.050.100.21-0.010.430.370.410.330.540.570.810.520.830.570.340.750.590.700.301.180.700.400.02

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Change From Baseline in Alkaline Phosphatase (Alk. Phos.), Alanine Amino Transferase (ALT) and Aspartate Amino Transferase (AST)

Clinical chemistry parameters included Alk. Phos., ALT and AST. The clinical laboratory evaluations were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionInternational units per liter (Mean)
Alk. Phos., Visit 1 (Month 1), n=352Alk. Phos., Visit 1a (Month 2), n=1Alk. Phos., Visit 2 (Month 3), n=322Alk. Phos., Visit 2a (Month 4), n=1Alk. Phos., Visit 3 (Month 6), n=279Alk. Phos., Visit 4 (Month 9), n=248Alk. Phos., Visit 5 (Month 12), n=228Alk. Phos., Visit 6 (Month 16), n=200Alk. Phos., Visit 7 (Month 20), n=176Alk. Phos., Visit 8 (Month 24), n=163Alk. Phos., Visit 9 (Month 28), n=142Alk. Phos., Visit 10 (Month 32), n=126Alk. Phos., Visit 11 (Month 36), n=116Alk. Phos., Visit 12 (Month 40), n=108Alk. Phos., Visit 13 (Month 44), n=101Alk. Phos., Visit 14 (Month 48), n=101Alk. Phos., Visit 15 (Month 52), n=88Alk. Phos., Visit 16 (Month 56), n=76Alk. Phos., Visit 17 (Month 60), n=90Alk. Phos., Visit 18 (Month 64), n=55Alk. Phos., Visit 19 (Month 68), n=50Alk. Phos., Visit 20 (Month 72), n=58Alk. Phos., Visit 21 (Month 76), n=40Alk. Phos., Visit 22 (Month 80), n=35Alk. Phos., Visit 23 (Month 84), n=32Alk. Phos., Visit 24 (Month 88), n=28Alk. Phos., Visit 25 (Month 92), n=25Alk. Phos., Visit 26 (Month 96), n=26Alk. Phos., Visit 27 (Month 100), n=20Alk. Phos., Visit 28 (Month 104), n=16Alk. Phos., Visit 29 (Month 108), n=13Alk. Phos., Visit 30 (Month 112), n=4Alk. Phos., Visit 31 (Month 116), n=3Alk. Phos., Visit 32 (Month 120), n=1Alk. Phos., Follow up, n=261ALT, Visit 1 (Month 1), n=352ALT, Visit 1a (Month 2), n=1ALT, Visit 2 (Month 3), n=322ALT, Visit 2a (Month 4), n=1ALT, Visit 3 (Month 6), n=278ALT, Visit 4 (Month 9), n=246ALT, Visit 5 (Month 12), n=227ALT, Visit 6 (Month 16), n=200ALT, Visit 7 (Month 20), n=174ALT, Visit 8 (Month 24), n=163ALT, Visit 9 (Month 28), n=141ALT, Visit 10 (Month 32), n=126ALT, Visit 11 (Month 36), n=115ALT, Visit 12 (Month 40), n=107ALT, Visit 13 (Month 44), n=101ALT, Visit 14 (Month 48), n=99ALT, Visit 15 (Month 52), n=88ALT, Visit 16 (Month 56), n=75ALT, Visit 17 (Month 60), n=89ALT, Visit 18 (Month 64), n=54ALT, Visit 19 (Month 68), n=50ALT, Visit 20 (Month 72), n=58ALT, Visit 21 (Month 76), n=39ALT, Visit 22 (Month 80), n=35ALT, Visit 23 (Month 84), n=32ALT, Visit 24 (Month 88), n=28ALT, Visit 25 (Month 92), n=25ALT, Visit 26 (Month 96), n=26ALT, Visit 27 (Month 100), n=20ALT, Visit 28 (Month 104), n=16ALT, Visit 29 (Month 108), n=13ALT, Visit 30 (Month 112), n=4ALT, Visit 31 (Month 116), n=3ALT, Visit 32 (Month 120), n=1ALT, Follow up, n=259AST, Visit 1 (Month 1), n=352AST, Visit 1a (Month 2), n=1AST, Visit 2 (Month 3), n=322AST, Visit 2a (Month 4), n=1AST, Visit 3 (Month 6), n=278AST, Visit 4 (Month 9), n=246AST, Visit 5 (Month 12), n=227AST, Visit 6 (Month 16), n=200AST, Visit 7 (Month 20), n=174AST, Visit 8 (Month 24), n=162AST, Visit 9 (Month 28), n=141AST, Visit 10 (Month 32), n=126AST, Visit 11 (Month 36), n=115AST, Visit 12 (Month 40), n=106AST, Visit 13 (Month 44), n=101AST, Visit 14 (Month 48), n=99AST, Visit 15 (Month 52), n=87AST, Visit 16 (Month 56), n=74AST, Visit 17 (Month 60), n=89AST, Visit 18 (Month 64), n=54AST, Visit 19 (Month 68), n=50AST, Visit 20 (Month 72), n=58AST, Visit 21 (Month 76), n=39AST, Visit 22 (Month 80), n=35AST, Visit 23 (Month 84), n=32AST, Visit 24 (Month 88), n=28AST, Visit 25 (Month 92), n=25AST, Visit 26 (Month 96), n=26AST, Visit 27 (Month 100), n=20AST, Visit 28 (Month 104), n=16AST, Visit 29 (Month 108), n=13AST, Visit 30 (Month 112), n=4AST, Visit 31 (Month 116), n=3AST, Visit 32 (Month 120), n=1AST, Follow up, n=257
Retigabine-0.9-18.0-1.54.0-1.2-3.0-1.9-1.8-3.6-4.0-3.1-4.6-6.2-4.8-5.8-7.2-2.5-0.1-5.1-2.0-0.60.30.83.20.2-0.11.54.84.18.66.61.83.01.0-0.42.6-24.01.545.01.3-0.23.41.31.20.51.71.00.10.90.60.50.91.30.0-0.8-0.50.60.30.1-2.3-4.1-4.2-1.6-3.2-3.1-3.6-5.32.31.05.52.1-65.01.824.01.00.73.01.72.72.73.33.33.23.63.73.92.73.73.62.12.34.03.93.81.93.51.32.51.63.20.7-4.52.77.03.4

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Percentage of Seizure Free Days

A seizure free day is defined as the number of applicable days without any seizures (partial, generalized or unclassified). Only the days in which a subject had non-missing seizure data were considered as applicable days. Percentage of seizure free days is calculated as Number of seizure free days / number of applicable days × 100 percent. Only those participants with data available at the indicated time point were analyzed. (NCT00310388)
Timeframe: Up to 121 months

InterventionPercentage of days (Mean)
Retigabine76.8

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Percentage of Participants With Decrease in Confrontation Visual Field From Initial Examination

The parameter assessed was decrease in confrontation visual field from initial examination. Only those participants with data available at the indicated time point were analyzed. Only those participants with both initial and at least 1 follow-up exam while on retigabine are presented. (NCT00310388)
Timeframe: Up to 121 months

InterventionPercentage of participants (Number)
Retigabine13

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Percentage of Participants With 50% Reduction in Seizure Frequency From Baseline Phase of the Parent Study (VRX-RET-E22-302) to Open Label Treatment

A Responder was defined as a participant with >=50 percent decrease from Baseline in the 28-day partial seizure frequency, i.e., a percent change from Baseline less than or equal to -50 percent. The percentage of responders from Baseline phase of the parent study (VRX-RET-E22-302) to open label treatment have been presented. (NCT00310388)
Timeframe: Baseline and up to 121 months

InterventionPercentage of participants (Number)
Retigabine52

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Change From Baseline in Electocardiogram (ECG) Parameters PR, QRS, QT, Corrected QT Interval (QTc) Bazett and QTc Friedericia

A 12-lead ECG was performed at all study visits during the Open-Label Treatment Phase during the first year of the open-label extension study (Months 1, 3, 6, 9, 12) and at the end of each 12 month study cycle that the participant was enrolled (i.e., second year, third year, fourth year, etc.). The ECG parameters that were assessed were PR interval, QRS interval, QRS duration, QT interval, and QTc interval. QT intervals were corrected using both Bazett's and Friedericia's formulas. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionMilliseconds (Mean)
PR interval, Visit 1 (Month 1), n=355PR interval, Visit 2 (Month 3), n=324PR interval, Visit 3 (Month 6), n=278PR interval, Visit 4 (Month 9), n=245PR interval, Visit 5 (Month 12), n=233PR interval, Visit 8 (Month 24), n=158PR interval, Visit 11 (Month 36), n=113PR interval, Visit 14 (Month 48), n=98PR interval, Visit 17 (Month 60), n=87PR interval, Visit 20 (Month 72), n=52PR interval, Visit 23 (Month 84), n=30PR interval, Visit 26 (Month 96), n=22PR interval, Visit 29 (Month 108), n=13PR interval, Visit 32 (Month 120), n=1PR interval, Follow up, n=252QRS duration, Visit 1 (Month 1), n=357QRS duration, Visit 2 (Month 3), n=327QRS duration, Visit 3 (Month 6), n=282QRS duration, Visit 4 (Month 9), n=249QRS duration, Visit 5 (Month 12), n=235QRS duration, Visit 8 (Month 24), n=160QRS duration, Visit 11 (Month 36), n=116QRS duration, Visit 14 (Month 48), n=99QRS duration, Visit 17 (Month 60), n=89QRS duration, Visit 20 (Month 72), n=56QRS duration, Visit 23 (Month 84), n=32QRS duration Visit 26 (Month 96), n=23QRS duration, Visit 29 (Month 108), n=13QRS duration, Visit 32 (Month 120), n=1QRS duration, Follow up, n=254QT interval, Visit 1 (Month 1), n=357QT interval, Visit 2 (Month 3), n=324QT interval, Visit 3 (Month 6), n=278QT interval, Visit 4 (Month 9), n=246QT interval, Visit 5 (Month 12), n=232QT interval, Visit 8 (Month 24), n=157QT interval, Visit 11 (Month 36), n=112QT interval, Visit 14 (Month 48), n=96QT interval, Visit 17 (Month 60), n=89QT interval, Visit 20 (Month 72), n=56QT interval, Visit 23 (Month 84), n=32QT interval, Visit 26 (Month 96), n=23QT interval, Visit 29 (Month 108), n=13QT interval, Visit 32 (Month 120), n=1QT interval, Follow up, n=254QTc Bazett interval, Visit 1 (Month 1, n=357QTc Bazett interval, Visit 2 (Month 3), n=324QTc Bazett interval, Visit 3 (Month 6), n=278QTc Bazett interval, Visit 4 (Month 9, n=246QTc Bazett interval, Visit 5 (Month 12), n=232QTc Bazett interval, Visit 8 (Month 24), n=157QTc Bazett interval, Visit 11 (Month 36), n=112QTc Bazett interval, Visit 14 (Month 48), n=96QTc Bazett interval, Visit 17 (Month 60), n=89QTc Bazett interval, Visit 20 (Month 72), n=56QTc Bazett interval, Visit 23 (Month 84), n=32QTc Bazett interval, Visit 26 (Month 96, n=23QTc Bazett interval, Visit 29 (Month 108), n=13QTc Bazett interval, Visit 32 (Month 120), n=1QTc Bazett interval, Follow up, n=254QTc Friedericia interval, Visit 1 (Month 1),n=357QTc Friedericia interval Visit 2 (Month 3),n=324QTc Friedericia interval,Visit 3 (Month 6),n=278QTc Friedericia interval, Visit 4 (Month 9),n=246QTc Friedericia intervalVisit 5 (Month 12),n=232QTc Friedericia interval,Visit 8 (Month 24),n=157QTc Friedericia intervalVisit 11 (Month 36),n=112QTc Friedericia interval,Visit 14 (Month 48),n=96QTc Friedericia interval,Visit 17 (Month 60),n=89QTc Friedericia intervalVisit 20 (Month 72),n=56QTc Friedericia intervalVisit 23 (Month 84),n=32QTc Friedericia interval,Visit 26 (Month 96),n=23QTcFriedericia intervalVisit 29 (Month 108)n=13QTc Friedericia interval,Visit 32 (Month 120),n=1QTcFriedericia interval, Follow up,n=254
Retigabine0.1-0.4-1.0-1.7-1.7-2.1-1.60.30.70.9-3.5-4.4-1.9-23.7-1.3-0.6-1.1-1.2-1.4-0.1-1.11.51.13.35.23.43.51.210.7-0.15.54.85.33.95.03.48.87.07.912.48.44.00.864.01.21.21.63.44.42.36.64.55.612.415.618.719.717.60.74.92.72.74.04.13.25.45.96.110.814.415.014.311.623.73.5

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Number of Participants With TEAEs Leading to Treatment Discontinuation (Disc.)

An AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. A summary of participants with treatment emergent AEs leading to treatment disc. up to 122 months have been presented. (NCT00310388)
Timeframe: Up to 122 months

InterventionParticipants (Number)
Retigabine115

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Number of Participants Who Were Seizure Free for Any 12 Continuous Months

Seizure free for any continuous 12 months is defined as no seizures occurring during any consecutive 360 days. Number of participants who were seizure free for 12 continuous months within the 121 month OLE period have been presented. (NCT00310388)
Timeframe: Up to 12 continuous months within the 121 months period

InterventionParticipants (Number)
Retigabine22

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Number of Participants Who Were Seizure Free for Any 6 Continuous Months

Seizure free for any continuous 6 months is defined as no seizures occuring during any consecutive 180 days between the first date (Baseline) and the last date (before tapering of dose). The number of participants who were seizure free for 6 continuous months within the 121 month OLE period have been presented. (NCT00310388)
Timeframe: Up to 6 continuous months within the 121 months period

InterventionParticipants (Number)
Retigabine36

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Number of Participants With Resolution of Dermatologist Confirmed Abnormal Discoloration After Discontinuation of Retigabine

An assessment of the participant's nails, lips, skin and mucosa was completed by the investigator at the 6 monthly SFUCP study visits. The assessment of the participant's skin included assessment of the skin around the eyes and the eyelids, lips, nails, and mucosa. (NCT00310388)
Timeframe: 3 years and 10 months

InterventionParticipants (Count of Participants)
SFUCP7

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Change From Baseline in Urine Potential of Hydrogen (pH)

Urinalysis parameters included urine pH. pH is calculated on a scale of 0 to 14, such that, the lower the number, more acidic the urine and higher the number, more alkaline the urine with 7 being neutral. Urinalysis assessments were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionPoints on a scale (Mean)
pH, Visit 1 (Month 1), n=349pH, Visit 1a (Month 2), n=1pH, Visit 2 (Month 3), n=313pH, Visit 3 (Month 6), n=270pH, Visit 4 (Month 9), n=245pH, Visit 5 (Month 12), n=222pH, Visit 6 (Month 16), n=196pH, Visit 7 (Month 20), n=170pH, Visit 8 (Month 24), n=158pH, Visit 9 (Month 28), n=138pH, Visit 10 (Month 32), n=124pH, Visit 11 (Month 36), n=111pH, Visit 12 (Month 40), n=107pH, Visit 13 (Month 44), n=97pH, Visit 14 (Month 48), n=99pH, Visit 15 (Month 52), n=83pH, Visit 16 (Month 56), n=71pH, Visit 17 (Month 60), n=84pH, Visit 18 (Month 64), n=53pH, Visit 19 (Month 68), n=50pH, Visit 20 (Month 72), n=55pH, Visit 21 (Month 76), n=39pH, Visit 22 (Month 80), n=35pH, Visit 23 (Month 84), n=31pH, Visit 24 (Month 88), n=28pH, Visit 25 (Month 92), n=25pH, Visit 26 (Month 96), n=26pH, Visit 27 (Month 100), n=20pH, Visit 28 (Month 104), n=16pH, Visit 29 (Month 108), n=13pH, Visit 30 (Month 112), n=4pH, Visit 31 (Month 116), n=3pH, Visit 32 (Month 120), n=1pH, Follow up, n=248
Retigabine-0.130.50-0.09-0.070.02-0.020.070.040.090.170.170.260.300.360.380.270.340.320.330.420.270.360.230.350.290.360.210.450.130.770.50-0.170.000.22

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Change From Baseline in Hematocrit

Blood samples for the assessment of clinical laboratory parameter hematocrit were collected at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionPercentage of red blood cells in blood (Mean)
Hematocrit, Visit 1 (Month 1), n=340Hematocrit, Visit 1a (Month 2), n=63Hematocrit, Visit 2 (Month 3), n=308Hematocrit, Visit 2a (Month 4), n=79Hematocrit, Visit 3 (Month 6), n=274Hematocrit, Visit 3a (Month 8), n=95Hematocrit, Visit 4 (Month 9), n=231Hematocrit, Visit 4a (Month 10), n=111Hematocrit, Visit 5 (Month 12), n=223Hematocrit, Visit 6 (Month 16), n=196Hematocrit, Visit 7 (Month 20), n=166Hematocrit, Visit 8 (Month 24), n=160Hematocrit, Visit 9 (Month 28), n=141Hematocrit, Visit 10 (Month 32), n=122Hematocrit, Visit 11 (Month 36), n=113Haematocrit, Visit 12 (Month 40), n=106Hematocrit, Visit 13 (Month 44), n=95Hematocrit, Visit 14 (Month 48), n=100Hematocrit, Visit 15 (Month 52), n=88Hematocrit, Visit 16 (Month 56), n=74Haematocrit, Visit 17 (Month 60), n=88Hematocrit, Visit 18 (Month 64), n=51Hematocrit, Visit 19 (Month 68), n=50Hematocrit, Visit 20 (Month 72), n=55Hematocrit, Visit 21 (Month 76), n=39Hematocrit, Visit 22 (Month 80), n=34Hematocrit, Visit 23 (Month 84), n=30Hematocrit, Visit 24 (Month 88), n=26Hematocrit, Visit 25 (Month 92), n=24Hematocrit, Visit 26 (Month 96), n=24Hematocrit, Visit 27 (Month 100), n=20Hematocrit, Visit 28 (Month 104), n=16Hematocrit, Visit 29 (Month 108), n=13Hematocrit, Visit 30 (Month 112), n=4Hematocrit, Visit 31 (Month 116), n=3Hematocrit, Visit 32 (Month 120), n=1Hematocrit,Follow up, n=253
Retigabine-0.009-0.005-0.004-0.012-0.005-0.009-0.002-0.004-0.004-0.003-0.0010.0000.0050.004-0.0010.0060.003-0.003-0.001-0.0010.0000.0090.0080.0040.0100.0150.0000.0050.0160.0130.0160.016-0.0020.0000.0330.0800.003

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Change From Baseline in Hematology Parameter Red Blood Cells (RBC)

The hematology parameters included RBC. The clinical laboratory evaluation were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

Intervention10^12 cells per liter (Mean)
RBC, Visit 1 (Month 1), n=349RBC, Visit 1a (Month 2), n=65RBC, Visit 2 (Month 3), n=316RBC, Visit 2a (Month 4), n=82RBC, Visit 3 (Month 6), n=279RBC, Visit 3a (Month 8), n=99RBC, Visit 4 (Month 9), n=244RBC, Visit 4a (Month 10), n=113RBC, Visit 5 (Month 12), n=226RBC, Visit 6 (Month 16), n=199RBC, Visit 7 (Month 20), n=174RBC, Visit 8 (Month 24), n=164RBC, Visit 9 (Month 28), n=142RBC, Visit 10 (Month 32), n=126RBC, Visit 11 (Month 36), n=115RBC, Visit 12 (Month 40), n=109RBC, Visit 13 (Month 44), n=98RBC, Visit 14 (Month 48), n=101RBC, Visit 15 (Month 52), n=88RBC, Visit 16 (Month 56), n=76RBC, Visit 17 (Month 60), n=89RBC, Visit 18 (Month 64), n=54RBC, Visit 19 (Month 68), n=50RBC, Visit 20 (Month 72), n=55RBC, Visit 21 (Month 76), n=40RBC, Visit 22 (Month 80), n=35RBC, Visit 23 (Month 84), n=32RBC, Visit 24 (Month 88), n=27RBC, Visit 25 (Month 92), n=25RBC, Visit 26 (Month 96), n=24RBC, Visit 27 (Month 100), n=20RBC, Visit 28 (Month 104), n=16RBC, Visit 29 (Month 108), n=13RBC, Visit 30 (Month 112), n=4RBC, Visit 31 (Month 116), n=3RBC, Visit 32 (Month 120), n=1RBC, Follow up, n=256
Retigabine-0.070.00-0.02-0.06-0.04-0.05-0.03-0.02-0.04-0.01-0.02-0.030.00-0.05-0.09-0.02-0.06-0.10-0.08-0.08-0.07-0.010.01-0.030.020.090.000.000.050.060.130.14-0.040.080.100.00-0.01

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Change From Baseline in Hemoglobin

The hematology parameters included hemoglobin. The clinical laboratory evaluations were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionGrams per liter (Mean)
Hemoglobin, Visit 1 (Month 1), n=349Hemoglobin, Visit 1a (Month 2), n=65Hemoglobin, Visit 2 (Month 3), n=316Hemoglobin, Visit 2a (Month 4), n=82Hemoglobin, Visit 3 (Month 6), n=279Hemoglobin, Visit 3a (Month 8), n=99Hemoglobin, Visit 4 (Month 9), n=244Hemoglobin, Visit 4a (Month 10), n=113Hemoglobin, Visit 5 (Month 12), n=226Hemoglobin, Visit 6 (Month 16), n=199Hemoglobin, Visit 7 (Month 20), n=174Hemoglobin, Visit 8 (Month 24), n=164Hemoglobin, Visit 9 (Month 28), n=142Hemoglobin, Visit 10 (Month 32), n=126Hemoglobin, Visit 11 (Month 36), n=115Hemoglobin, Visit 12 (Month 40), n=109Hemoglobin, Visit 13 (Month 44), n=98Hemoglobin, Visit 14 (Month 48), n=101Hemoglobin, Visit 15 (Month 52), n=88Hemoglobin, Visit 16 (Month 56), n=76Hemoglobin, Visit 17 (Month 60), n=89Hemoglobin, Visit 18 (Month 64), n=54Hemoglobin, Visit 19 (Month 68), n=50Hemoglobin, Visit 20 (Month 72), n=55Hemoglobin, Visit 21 (Month 76), n=40Hemoglobin, Visit 22 (Month 80), n=35Hemoglobin, Visit 23 (Month 84), n=32Hemoglobin, Visit 24 (Month 88), n=27Hemoglobin, Visit 25 (Month 92), n=25Hemoglobin, Visit 26 (Month 96), n=24Hemoglobin, Visit 27 (Month 100), n=20Hemoglobin, Visit 28 (Month 104), n=16Hemoglobin, Visit 29 (Month 108), n=13Hemoglobin, Visit 30 (Month 112), n=4Hemoglobin, Visit 31 (Month 116), n=3Hemoglobin, Visit 32 (Month 120), n=1Hemoglobin, Follow up, n=256
Retigabine-2.6-1.8-0.8-3.3-1.3-3.0-0.7-2.0-1.4-0.4-0.6-0.31.20.3-1.00.4-0.1-1.6-1.6-2.3-2.4-1.1-0.4-2.5-1.5-0.8-3.6-3.0-2.3-4.0-2.8-2.9-8.1-12.53.025.0-0.1

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Change From Baseline in Post-Void Residual (PVR) Bladder Ultrasound Volume

The post-void residual urine volume in the bladder was evaluated by transabdominal ultrasound. The urine bladder was sonicated from two directions perpendicular to one another, and the volume calculated automatically. A PVR bladder ultrasound to assess urinary retention was performed during the first year at Months 1, 3 and 12 and at the end of each 12 month study cycle that the participant was enrolled (i.e., second year, third year, fourth year, etc.) in the Open-Label Treatment Phase of the study. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionMilliliters (Mean)
PVR urine volume, Visit 1 (Month 1), n=337PVR urine volume, Visit 2 (Month 3), n=307PVR urine volume, Visit 5 (Month 12), n=223PVR urine volume, Visit 8 (Month 24), n=111PVR urine volume, Visit 11 (Month 36), n=106PVR urine volume, Visit 14 (Month 48), n=96PVR urine volume, Visit 17 (Month 60), n=77PVR urine volume, Visit 20 (Month 72), n=53PVR urine volume, Visit 23 (Month 84), n=29PVR urine volume, Visit 26 (Month 96), n=24PVR urine volume, Visit 29 (Month 108), n=10PVR urine volume, Follow up, n=186
Retigabine4.64.14.15.55.0-2.322.27.115.72.021.9-4.0

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Change From Baseline in Quality of Life in Epilepsy-31-Problems (QOLIE-31-P) Questionnaire

The QOLIE-31-P questionnaire contained 30 items. The subscale scores (seizure worry, overall QOL, emotional well-being, energy-fatigue, cognitive, medication effects, social functioning), the final QOLIE-31-P score and the weighted total score (overall assessment) were calculated according to the scoring algorithm defined by the author. Scores range from 0 to 100 with higher scores indicating better function. Baseline was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionScores on a scale (Mean)
Final QOLIE-31-P Score, Visit 2 (Month 3), n=296Final QOLIE-31-P Score, Visit 3 (Month 6), n=262Final QOLIE-31-P Score, Visit 4 (Month 9), n=229Final QOLIE-31-P Score, Visit 5 (Month 12), n=214Final QOLIE-31-P Score, Visit 8 (Month 24), n=142Final QOLIE-31-P Score, Visit 11 (Month 36), n=97Final QOLIE-31-P Score, Visit 14 (Month 48), n=83Final QOLIE-31-P Score Visit 17 (Month 60), n=68Final QOLIE-31-P Score Visit 20 (Month 72), n=47Final QOLIE-31-P Score Visit 23 (Month 84), n=26Final QOLIE-31-P Score Visit 26 (Month 96), n=24Final QOLIE-31-P Score Visit 29 (Month 108), n=12Final QOLIE-31-P Score Visit 32 (Month 120), n=1Final QOLIE-31-P Score, Follow up, n=224
Retigabine1.330.870.271.243.762.770.782.373.074.314.076.3514.36-0.83

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Change From Baseline in Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) Measurements in the Supine and Standing Position

Vital sign measurements (supine and standing blood pressure ) were obtained throughout the study at all visits during the Open-Label Treatment Phase of the study. Evaluations of blood pressure were performed supine at each study visit, and again after the participant had been standing for approximately 2 minutes. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionMillimeters of mercury (Mean)
Supine DBP, Visit 1 (Month 1), n=358Supine DBP, Visit 2 (Month 3), n=328Supine DBP, Visit 3 (Month 6), n=287Supine DBP, Visit 4 (Month 9), n=251Supine DBP, Visit 5 (Month 12), n=235Supine DBP, Visit 6 (Month 16), n=202Supine DBP, Visit 7 (Month 20), n=181Supine DBP, Visit 8 (Month 24), n=167Supine DBP, Visit 9 (Month 28), n=147Supine DBP, Visit 10 (Month 32), n=128Supine DBP, Visit 11 (Month 36), n=121Supine DBP,Visit 12 (Month 40), n=112Supine DBP, Visit 13 (Month 44), n=105Supine DBP, Visit 14 (Month 48), n=104Supine DBP, Visit 15 (Month 52), n=91Supine DBP, Visit 16 (Month 56), n=77Supine DBP, Visit 17 (Month 60), n=92Supine DBP, Visit 18 (Month 64), n=58Supine DBP, Visit 19 (Month 68), n=53Supine DBP, Visit 20 (Month 72), n=61Supine DBP, Visit 21 (Month 76), n=43Supine DBP, Visit 22 (Month 80), n=37Supine DBP, Visit 23 (Month 84), n=32Supine DBP, Visit 24 (Month 88), n=29Supine DBP, Visit 25 (Month 92), n=25Supine DBP, Visit 26 (Month 96), n=26Supine DBP, Visit 27 (Month 100), n=20Supine DBP, Visit 28 (Month 104), n=17Supine DBP, Visit 29 (Month 108), n=13Supine DBP, Visit 30 (Month 112), n=4Supine DBP, Visit 31 (Month 116), n=3Supine DBP, Visit 32 (Month 120), n=1Supine DBP, Follow up, n=267Standing DBP, Visit 1 (Month 1), n=357Standing DBP, Visit 2 (Month 3), n=328Standing DBP, Visit 3 (Month 6), n=287Standing DBP, Visit 4 (Month 9), n=251Standing DBP, Visit 5 (Month 12), n=235Standing DBP, Visit 6 (Month 16), n=202Standing DBP, Visit 7 (Month 20), n=181Standing DBP, Visit 8 (Month 24), n=167Standing DBP, Visit 9 (Month 28), n=147Standing DBP, Visit 10 (Month 32), n=128Standing DBP, Visit 11 (Month 36), n=121Standing DBP, Visit 12 (Month 40), n=111Standing DBP, Visit 13 (Month 44), n=105Standing DBP, Visit 14 (Month 48), n=104Standing DBP, Visit 15 (Month 52), n=91Standing DBP, Visit 16 (Month 56), n=77Standing DBP, Visit 17 (Month 60), n=92Standing DBP, Visit 18 (Month 64), n=58Standing DBP, Visit 19 (Month 68), n=53Standing DBP, Visit 20 (Month 72), n=61Standing DBP, Visit 21 (Month 76), n=43Standing DBP, Visit 22 (Month 80), n=37Standing DBP, Visit 23 (Month 84), n=32Standing DBP, Visit 24 (Month 88), n=29Standing DBP, Visit 25 (Month 92), n=25Standing DBP, Visit 26 (Month 96), n=26Standing DBP, Visit 27 (Month 100), n=20Standing DBP, Visit 28 (Month 104), n=17Standing DBP, Visit 29 (Month 108), n=13Standing DBP, Visit 30 (Month 112), n=4Standing DBP, Visit 31 (Month 116), n=3Standing DBP, Visit 32 (Month 120), n=1Standing DBP, Follow up, n=267Supine SBP, Visit 1 (Month 1), n=358Supine SBP, Visit 2 (Month 3), n=328Supine SBP, Visit 3 (Month 6), n=287Supine SBP, Visit 4 (Month 9), n=251Supine SBP, Visit 5 (Month 12), n=235Supine SBP, Visit 6 (Month 16), n=202Supine SBP, Visit 7 (Month 20), n=181Supine SBP, Visit 8 (Month 24), n=167Supine SBP, Visit 9 (Month 28), n=147Supine SBP, Visit 10 (Month 32), n=128Supine SBP, Visit 11 (Month 36), n=121Supine SBP, Visit 12 (Month 40), n=112Supine SBP, Visit 13 (Month 44), n=105Supine SBP, Visit 14 (Month 48), n=104Supine SBP, Visit 15 (Month 52), n=91Supine SBP, Visit 16 (Month 56), n=77Supine SBP, Visit 17 (Month 60), n=92Supine SBP, Visit 18 (Month 64), n=58Supine SBP, Visit 19 (Month 68), n=53Supine SBP, Visit 20 (Month 72), n=61Supine SBP, Visit 21 (Month 76), n=43Supine SBP, Visit 22 (Month 80), n=37Supine SBP, Visit 23 (Month 84), n=32Supine SBP, Visit 24 (Month 88), n=29Supine SBP, Visit 25 (Month 92), n=25Supine SBP, Visit 26 (Month 96), n=26Supine SBP, Visit 27 (Month 100), n=20Supine SBP, Visit 28 (Month 104), n=17Supine SBP, Visit 29 (Month 108), n=13Supine SBP, Visit 30 (Month 112), n=4Supine SBP, Visit 31 (Month 116), n=3Supine SBP, Visit 32 (Month 120), n=1Supine SBP, Follow up, n=267Standing SBP, Visit 1 (Month 1), n=357Standing SBP, Visit 2 (Month 3), n=328Standing SBP, Visit 3 (Month 6), n=287Standing SBP, Visit 4 (Month 9), n=251Standing SBP, Visit 5 (Month 12), n=235Standing SBP, Visit 6 (Month 16), n=202Standing SBP, Visit 7 (Month 20), n=181Standing SBP, Visit 8 (Month 24), n=167Standing SBP, Visit 9 (Month 28), n=147Standing SBP, Visit 10 (Month 32), n=128Standing SBP, Visit 11 (Month 36), n=121Standing SBP, Visit 12 (Month 40), n=111Standing SBP, Visit 13 (Month 44), n=105Standing SBP, Visit 14 (Month 48), n=104Standing SBP, Visit 15 (Month 52), n=91Standing SBP, Visit 16 (Month 56), n=77Standing SBP, Visit 17 (Month 60), n=92Standing SBP, Visit 18 (Month 64), n= 58Standing SBP, Visit 19 (Month 68), n=53Standing SBP, Visit 20 (Month 72), n=61Standing SBP, Visit 21 (Month 76), n=43Standing SBP, Visit 22 (Month 80), n=37Standing SBP, Visit 23 (Month 84), n=32Standing SBP, Visit 24 (Month 88), n=29Standing SBP, Visit 25 (Month 92), n=25Standing SBP, Visit 26 (Month 96), n=26Standing SBP, Visit 27 (Month 100), n=20Standing SBP, Visit 28 (Month 104), n=17Standing SBP, Visit 29 (Month 108), n=13Standing SBP, Visit 30 (Month 112), n=4Standing SBP, Visit 31 (Month 116), n=3Standing SBP, Visit 32 (Month 120), n=1Standing SBP, Follow up, n=267
Retigabine0.40.3-0.20.00.71.00.40.41.50.01.02.00.50.00.11.2-1.01.60.61.33.21.8-1.43.42.31.51.53.40.54.011.0-2.01.30.60.2-0.10.20.80.30.40.20.3-0.60.91.4-0.20.3-1.5-0.3-1.50.50.00.31.40.3-0.41.61.01.60.22.8-0.51.38.0-1.02.0-0.2-0.40.50.00.50.7-0.5-0.40.20.30.21.30.1-1.1-0.72.6-0.21.81.12.54.42.31.12.72.82.92.65.8-2.28.513.711.01.2-1.2-0.7-0.2-0.7-0.7-0.3-0.8-0.5-0.3-0.10.72.7-1.3-1.6-1.20.9-0.70.60.20.53.50.9-0.8-0.6-1.6-0.20.02.9-2.21.89.010.01.4

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Change From Baseline in the Urinary Voiding Function [UVF] (Assessed Using the American Urological Association [AUA] Symptom Index)

AUA Symptom Index was completed during the first year at Months 1, 3, 12 and at the end of each 12 month study cycle that the participant was enrolled in the Open-Label Treatment Phase (second, third, fourth year) to assess the participant UVF. The questions were scored on a scale of 0 to 5, with 0 (not at all) to 5 (almost always). A Symptom Index is determined by adding the scores. The lowest possible score is 0 and the highest possible score is 35, which would represent the highest level of pain and discomfort. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed represented by (n=x). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionScores on a scale (Mean)
AUA Overall Score, Visit 1 (Month 1), n=348AUA Overall Score, Visit 2 (Month 3), n=325AUA Overall Score, Visit 5 (Month 12), n=228AUA Overall Score, Visit 8 (Month 24), n=114AUA Overall Score, Visit 11 (Month 36), n=115AUA Overall Score, Visit 14 (Month 48), n=102AUA Overall Score, Visit 17 (Month 60), n=87AUA Overall Score, Visit 20 (Month 72), n=56AUA Overall Score, Visit 23 (Month 84), n=32AUA Overall Score, Visit 26 (Month 96), n=26AUA Overall Score, Visit 29 (Month 108), n=13AUA Overall Score, Visit 32 (Month 120), n=1AUA Overall Score, Follow up, n=217
Retigabine-0.4-0.5-0.5-0.5-0.3-0.6-0.4-0.10.80.50.00.00.0

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Change From Baseline in Total Protein

Clinical chemistry parameter included total protein. The clinical laboratory evaluation were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionGrams per liter (Mean)
Total Protein, Visit 1 (Month 1), n=352Total Protein, Visit 1a (Month 2), n=1Total Protein, Visit 2 (Month 3), n=322Total Protein, Visit 2a (Month 4), n=1Total Protein, Visit 3 (Month 6), n=279Total Protein, Visit 4 (Month 9), n=248Total Protein, Visit 5 (Month 12), n=228Total Protein, Visit 6 (Month 16), n=200Total Protein, Visit 7 (Month 20), n=176Total Protein, Visit 8 (Month 24), n=163Total Protein, Visit 9 (Month 28), n=142Total Protein, Visit 10 (Month 32), n=126Total Protein, Visit 11 (Month 36), n=116Total Protein, Visit 12 (Month 40), n=108Total Protein, Visit 13 (Month 44), n=101Total Protein, Visit 14 (Month 48), n=101Total Protein, Visit 15 (Month 52), n=88Total Protein, Visit 16 (Month 56), n=76Total Protein, Visit 17 (Month 60), n=90Total Protein, Visit 18 (Month 64), n=55Total Protein, Visit 19 (Month 68), n=50Total Protein, Visit 20 (Month 72), n=58Total Protein, Visit 21 (Month 76), n=40Total Protein, Visit 22 (Month 80), n=35Total Protein, Visit 23 (Month 84), n=32Total Protein, Visit 24 (Month 88), n=28Total Protein, Visit 25 (Month 92), n=25Total Protein, Visit 26 (Month 96), n=26Total Protein, Visit 27 (Month 100), n=20Total Protein, Visit 28 (Month 104), n=16Total Protein, Visit 29 (Month 108), n=13Total Protein, Visit 30 (Month 112), n=4Total Protein, Visit 31 (Month 116), n=3Total Protein, Visit 32 (Month 120), n=1Total Protein, Follow up, n=261
Retigabine-1.1-12.0-0.8-3.0-1.1-1.8-1.6-1.3-1.8-1.5-1.5-1.3-2.1-1.9-1.8-2.0-1.9-2.1-2.4-2.2-2.2-3.0-1.8-0.6-2.2-1.9-1.2-1.1-0.9-0.2-2.10.8-4.7-4.0-1.1

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Change From Baseline in Urine Specific Gravity

Urine specific gravity is a measure of the concentration of solutes in the urine. It measures the ratio of urine density compared with water density and provides information on the kidney's ability to concentrate urine. Urinalysis assessments were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionRatio (Mean)
Specific gravity, Visit 1 (Month 1), n=348Specific gravity, Visit 1a (Month 2), n=1Specific gravity, Visit 2 (Month 3), n=312Specific gravity, Visit 3 (Month 6), n=270Specific gravity, Visit 4 (Month 9), n=243Specific gravity, Visit 5 (Month 12), n=221Specific gravity, Visit 6 (Month 16), n=196Specific gravity, Visit 7 (Month 20), n=170Specific gravity, Visit 8 (Month 24), n=157Specific gravity, Visit 9 (Month 28), n=137Specific gravity, Visit 10 (Month 32), n=124Specific gravity, Visit 11 (Month 36), n=111Specific gravity, Visit 12 (Month 40), n=106Specific gravity, Visit 13 (Month 44), n=97Specific gravity, Visit 14 (Month 48), n=99Specific gravity, Visit 15 (Month 52), n=83Specific gravity, Visit 16 (Month 56), n=71Specific gravity, Visit 17 (Month 60), n=84Specific gravity, Visit 18 (Month 64), n=53Specific gravity, Visit 19 (Month 68), n=50Specific gravity, Visit 20 (Month 72), n=55Specific gravity, Visit 21 (Month 76), n=39Specific gravity, Visit 22 (Month 80), n=35Specific gravity, Visit 23 (Month 84), n=31Specific gravity, Visit 24 (Month 88), n=28Specific gravity, Visit 25 (Month 92), n=25Specific gravity, Visit 26 (Month 96), n=26Specific gravity, Visit 27 (Month 100), n=20Specific gravity, Visit 28 (Month 104), n=16Specific gravity, Visit 29 (Month 108), n=13Specific gravity, Visit 30 (Month 112), n=4Specific gravity, Visit 31 (Month 116), n=3Specific gravity, Visit 32 (Month 120), n=1Specific gravity, Follow up, n=247
Retigabine-0.00110.0000-0.00110.00030.0002-0.00100.00060.00150.00020.00070.0001-0.00160.00040.00040.0000-0.01000.0003-0.00080.00060.0014-0.00210.00300.00150.00240.00430.00460.00350.00290.00260.00200.00200.0030-0.00100.0008

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Kaplan-Meier Estimate of the Probability of Disc. From Study Drug

Kaplan-Meier estimate of the probability of disc. at the specified time for all participants is presented. The time frame of premature study disc. was defined as the time from the day of first the study medication to the time of withdrawal from study drug. For those who had a taper dose start date, the time of withdrawal was the day before the start of taper dose. Participants who switched to commercial product were censored at the last dose of study drug (excluding taper). All participants who withdrew from the study/treatment prematurely but did not switch to commercial product were counted as an event. Number of participants continuing on retigabine at each time of withdrawal were analyzed (represented by n=x in the category titles). (NCT00310388)
Timeframe: Up to 122 months

InterventionPercentage Probability of disc. (Number)
Day 0, n=374Day 1, n=371Day 2, n=369Day 3, n=368Day 4, n=367Day 5, n=366Day 6, n=365Day 11, n=364Day 13, n=363Day 14, n=362Day 16, n=361Day 21, n=360Day 22, n=359Day 27, n=356Day 28, n=350Day 29, n=348Day 30, n=344Day 32, n=343Day 35, n=341Day 40, n=340Day 41, n=339Day 42, n=338Day 45, n=337Day 50, n=336Day 56, n=335Day 61, n=334Day 62, n=333Day 63, n=331Day 71, n=330Day 77, n=329Day 82, n=328Day 85, n=326Day 86, n=325Day 88, n=324Day 90, n=322Day 91, n=316Day 92, n=313Day 94, n=312Day 95, n=310Day 99, n=309Day 104, n=308Day 105, n=307Day 107, n=306Day 110, n=305Day 112, n=303Day 118, n=302Day 121, n=300Day 122, n=299Day 126, n=298Day 132, n=297Day 134, n=296Day 135, n=295Day 138, n=294Day 139, n=293Day 141, n=292Day 152, n=291Day 155, n=290Day 161, n=289Day 164, n=288Day 172, n=287Day 176, n=286Day 179, n=282Day 180, n=278Day 181, n=275Day 182, n=273Day 183, n=272Day 184, n=271Day 187, n=270Day 188, n=269Day 189, n=268Day 192, n=267Day 195, n=265Day 198, n=264Day 199, n=263Day 204, n=262Day 214, n=261Day 216, n=260Day 218, n=259Day 221, n=258Day 228, n=257Day 231, n=256Day 233, n=255Day 235, n=254Day 236, n=253Day 237, n=251Day 252, n=250Day 260, n=249Day 264, n=248Day 265, n=247Day 269, n=246Day 270, n=245Day 272, n=240Day 274, n=239Day 275, n=238Day 276, n=236Day 278, n=235Day 279, n=234Day 292, n=233Day 299, n=231Day 301, n=230Day 310, n=229Day 315, n=228Day 316, n=227Day 317, n=226Day 322, n=225Day 325, n=224Day 339, n=223Day 351, n=222Day 357, n=221Day 358, n=219Day 363, n=218Day 372, n=217Day 375, n=216Day 377, n=215Day 416, n=214Day 419, n=213Day 425, n=212Day 429, n=211Day 437, n=210Day 447, n=209Day 455, n=208Day 458, n=207Day 460, n=206Day 461, n=205Day 478, n=204Day 480, n=203Day 482, n=202Day 485, n=200Day 492, n=197Day 493, n=196Day 497, n=194Day 498, n=193Day 501, n=192Day 523, n=191Day 525, n=190Day 534, n=189Day 536, n=188Day 541, n=187Day 553, n=186Day 556, n=185Day 587, n=184Day 593, n=183Day 594, n=182Day 596, n=181Day 601, n=180Day 602, n=178Day 610, n=177Day 612, n=176Day 617, n=175Day 618, n=174Day 632, n=173Day 635, n=172Day 669, n=171Day 676, n=170Day 678, n=169Day 685, n=168Day 700, n=167Day 702, n=165Day 703, n=164Day 707, n=163Day 714, n=162Day 719, n=161Day 720, n=160Day 721, n=159Day 724, n=158Day 729, n=157Day 760, n=156Day 775, n=155Day 777, n=154Day 778, n=153Day 779, n=152Day 781, n=151Day 796, n=150Day 803, n=149Day 818, n=148Day 835, n=147Day 840, n=146Day 841, n=144Day 842, n=143Day 844, n=142Day 845, n=141Day 855, n=140Day 856, n=139Day 863, n=138Day 870, n=137Day 884, n=136Day 893, n=135Day 904, n=134Day 924, n=133Day 927, n=132Day 938, n=131Day 944, n=130Day 947, n=128Day 952, n=127Day 975, n=126Day 980, n=125Day 994, n=123Day 1067, n=122Day 1074, n=121Day 1084, n=120Day 1091, n=119Day 1129, n=118Day 1141, n=117Day 1142, n=116Day 1148, n=115Day 1196, n=114Day 1198, n=113Day 1206, n=112Day 1207, n=111Day 1211, n=110Day 1221, n=109Day 1231, n=108Day 1299, n=107Day 1316, n=106Day 1322, n=105Day 1389, n=104Day 1413, n=103Day 1436, n=102Day 1446, n=101Day 1450, n=100Day 1451, n=99Day 1452, n=98Day 1521, n=97Day 1541, n=96Day 1545, n=95Day 1547, n=94Day 1563, n=93Day 1567, n=92Day 1569, n=91Day 1589, n=90Day 1618, n=89Day 1619, n=88Day 1623, n=87Day 1632, n=86Day 1656, n=85Day 1660, n=84Day 1668, n=83Day 1672, n=82Day 1676, n=81Day 1680, n=80Day 1694, n=79Day 1697, n=78Day 1752, n=77Day 1756, n=76Day 1760, n=75Day 1792, n=74Day 1802, n=73Day 1807, n=72Day 1814, n=71Day 1819, n=70Day 1836, n=69Day 1849, n=68Day 1855, n=67Day 1887, n=66Day 1895, n=65Day 1904, n=64Day 1919, n=63Day 1920, n=62Day 1926, n=61Day 1928, n=60Day 1929, n=59Day 1931, n=58Day 1937, n=57Day 1951, n=56Day 2005, n=55Day 2037, n=54Day 2044, n=53Day 2092, n=52Day 2157, n=51Day 2161, n=50Day 2162, n=49Day 2182, n=48Day 2183, n=47Day 2184, n=46Day 2227, n=45Day 2281, n=44Day 2283, n=43Day 2285, n=42Day 2296, n=41Day 2317, n=40Day 2380, n=39Day 2395, n=37Day 2400, n=36Day 2405, n=35Day 2408, n=34Day 2415, n=33Day 2443, n=32Day 2525, n=31Day 2533, n=30Day 2537, n=29Day 2639, n=28Day 2664, n=27Day 2772, n=26Day 2793, n=25Day 2829, n=24Day 2870, n=23Day 2884, n=22Day 2973, n=21Day 2975, n=20Day 2998, n=19Day 3101, n=18Day 3118, n=17Day 3137, n=16Day 3144, n=15Day 3147, n=14Day 3185, n=13Day 3220, n=11Day 3231, n=10Day 3243, n=9Day 3246, n=8Day 3276, n=7Day 3277, n=6Day 3285, n=5Day 3318, n=4Day 3360, n=3Day 3483, n=2Day 3582, n=1
Retigabine0.51.31.92.12.42.72.93.23.53.74.04.34.55.36.97.48.58.89.39.69.810.110.410.610.911.211.412.012.212.512.813.313.613.814.416.016.817.017.617.818.118.418.618.919.419.720.220.520.721.021.321.521.822.122.322.622.923.123.423.723.925.026.126.927.427.727.928.228.528.729.029.529.830.130.330.630.931.131.431.631.932.232.432.733.233.533.834.034.334.634.836.236.436.737.237.537.838.038.638.839.139.439.639.940.240.440.741.041.241.842.042.342.642.843.143.443.643.944.144.444.744.945.245.545.746.046.346.847.647.948.448.748.949.249.549.750.050.350.550.851.151.351.651.952.152.752.953.253.553.754.054.354.554.855.155.355.656.156.456.656.957.257.457.758.058.258.558.859.059.359.659.860.160.460.660.961.261.762.062.262.562.863.063.363.663.864.164.464.664.965.265.466.066.266.566.867.367.667.868.168.468.668.969.169.469.769.970.270.570.771.071.371.571.872.172.372.672.672.973.173.173.473.773.773.774.074.074.274.574.574.574.574.574.574.574.574.875.175.475.475.475.475.475.875.876.176.176.176.476.476.476.476.476.476.876.876.877.177.577.577.978.378.378.679.079.479.479.880.280.681.081.381.782.182.582.983.383.783.784.184.585.385.786.186.586.986.987.387.788.188.588.989.389.790.190.691.091.491.892.292.693.093.493.894.394.795.595.996.396.797.197.597.998.498.899.299.6

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Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of Retigabine

The ophthalmologist/retina specialist determined the presence or absence of retinal and non-retinal ocular abnormalities. Retinal abnormalities included abnormalities in the macula and/or the peripheral retina. Only those participants available at the specified time points were analyzed. (NCT00310388)
Timeframe: 3 years and 10 months

InterventionParticipants (Count of Participants)
Retinal pigmentary abnormalityPigmentary abnormality of maculaPigmentary abnormality of peripheral retinaNon-retinal ocular pigmentary abnormality
SFUCP0128

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Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (TESAEs)

An AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, other situations and is associated with impaired liver function. TEAEs refer to an AE for which the onset was on or after Retigabine dose in this study and on or before 30 days after the last Retigabine dose date. AEs that started in the parent study that worsened in this study were also considered as TEAEs. Analysis was performed on the safety population which included participants who took at least 1 dose of study medication after being enrolled in this OLE study. (NCT00310388)
Timeframe: Up to 122 months

InterventionParticipants (Number)
Any TEAEAny TESAE
Retigabine32478

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Percentage of Participants With a Clinically Significant Decrease (CSD) in Visual Acuity (VA) From Initial Examination

VA refers to the clarity of vision. The parameters assessed were CSD in VA from initial examination which can be explained and CSD in VA from initial examination which cannot be explained. Only those participants with both initial and at least 1 follow-up exam while on retigabine are presented. (NCT00310388)
Timeframe: Up to 121 months

InterventionPercentage of participants (Number)
CSD in VA from initial examination, n=38CSD which can be explained (Form 2), n=34CSD which can not be explained (Form 2), n=34
Retigabine13120

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Percentage of Participants With Abnormal Pigmentation of Skin, Including the Skin Around the Eyes and the Eyelids, Lips, Nails, or Mucosa

Abnormal discoloration of the skin was determined by a dermatologist. The parameters assessed were abnormal discoloration of the skin, abnormal discoloration of the lips, abnormal discoloration of the nails, abnormal discoloration of the mucosa, abnormal discoloration of sun-exposed tissue, abnormal discoloration of non sun-exposed tissue. Only those participants with at least one skin exam by the investigator or dermatologist on or before the last dose of retigabine or dermatologist-confirmed discoloration with start date on or before the date of last dose of retigabine are presented. (NCT00310388)
Timeframe: Up to 121 months

InterventionPercentage of participants (Number)
Any abnormal dermatologic discolorationAbnormal discoloration of skinAbnormal discoloration of lipsAbnormal discoloration of nailsAbnormal discoloration of mucosaAbnormal discoloration of sun-exposed tissueAbnormal discoloration of non sun-exposed tissue
Retigabine50372641304837

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Percentage of Participants With Abnormal Results of Neurological Examination

A complete neurological examination was performed at the end of each 12 month study cycle (i.e., first year, second year, third year, etc.) during the Open-Label Treatment Phase. Abnormal results were categorized as Abnormal-Not Clinically Significant (A-NCS) and Abnormal and Clinically Significant (A-CS). Only data for abnormal values on neurological examination have been presented. Only those participants available at the specified time points were analyzed. (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionPercentage of participants (Number)
Visit 1 (Month 1), A-NCS, n=356Visit 1 (Month 1), A-CS, n=356Visit 2 (Month 3), A-NCS, n=328Visit 2 (Month 3), A-CS, n=328Visit 3 (Month 6), A-NCS, n=287Visit 3 (Month 6), A-CS, n=287Visit 4 (Month 9), A-NCS, n=252Visit 4 (Month 9), A-CS, n=252Visit 5 (Month 12), A-NCS, n=234Visit 5 (Month 12), A-CS, n=234Visit 6 (Month 16), A-NCS, n=202Visit 6 (Month 16), A-CS, n=202Visit 7 (Month 20), A-NCS, n=179Visit 7 (Month 20), A-CS, n=179Visit 8 (Month 24), A-NCS, n=166Visit 8 (Month 24), A-CS, n=166Visit 9 (Month 28), A-NCS, n=146Visit 9 (Month 28), A-CS, n=146Visit 10 (Month 32), A-NCS, n=127Visit 10 (Month 32), A-CS, n=127Visit 11 (Month 36), A-NCS, n=121Visit 11 (Month 36), A-CS, n=121Visit 12 (Month 40), A-NCS, n=112Visit 12 (Month 40), A-CS, n=112Visit 13 (Month 44), A-NCS, n=105Visit 13 (Month 44), A-CS, n=105Visit 14 (Month 48), A-NCS, n=104Visit 14 (Month 48), A-CS, n=104Visit 15 (Month 52), A-NCS, n=91Visit 15 (Month 52), A-CS, n=91Visit 16 (Month 56), A-NCS, n=77Visit 16 (Month 56), A-CS, n=77Visit 17 (Month 60), A-NCS, n=89Visit 17 (Month 60), A-CS, n=89Visit 18 (Month 64), A-NCS, n=58Visit 18 (Month 64), A-CS, n=58Visit 19 (Month 68), A-NCS, n=53Visit 19 (Month 68), A-CS, n=53Visit 20 (Month 72), A-NCS, n=59Visit 20 (Month 72), A-CS, n=59Visit 21 (Month 76), A-NCS, n=43Visit 21 (Month 76), A-CS, n=43Visit 22 (Month 80), A-NCS, n=37Visit 22 (Month 80), A-CS, n=37Visit 23 (Month 84), A-NCS, n=32Visit 23 (Month 84), A-CS, n=32Visit 24 (Month 88), A-NCS, n=29Visit 24 (Month 88), A-CS, n=29Visit 25 (Month 92), A-NCS, n=25Visit 25 (Month 92), A-CS, n=25Visit 26 (Month 96), A-NCS, n=26Visit 26 (Month 96), A-CS, n=26Visit 27 (Month 100), A-NCS, n=19Visit 27 (Month 100), A-CS, n=19Visit 28 (Month 104), A-NCS, n=17Visit 28 (Month 104), A-CS, n=17Visit 29 (Month 108), A-NCS, n=13Visit 29 (Month 108), A-CS, n=13Follow up visit, A-NCS, n=263Follow up visit, A-CS, n=263
Retigabine23102392210231127122492593410328328358281031928113193292992910369417407415473457408421521162424318228

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Change From Baseline in Heart Rate (HR) Measurements in the Supine and Standing Position

Vital sign measurement HR was obtained throughout the study at all visits during the Open-Label Treatment Phase of the study. Evaluations of HR was performed supine at each study visit, and again after the participant had been standing for approximately 2 minutes. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionBeats per minute (Mean)
Supine HR, Visit 1 (Month 1), n=358Supine HR, Visit 2 (Month 3), n=328Supine HR, Visit 3 (Month 6), n=287Supine HR, Visit 4 (Month 9), n=252Supine HR, Visit 5 (Month 12), n=235Supine HR, Visit 6 (Month 16), n=202Supine HR, Visit 7 (Month 20), n=181Supine HR, Visit 8 (Month 24), n=167Supine HR, Visit 9 (Month 28), n=147Supine HR, Visit 10 (Month 32), n=128Supine HR, Visit 11 (Month 36), n=121Supine HR, Visit 12 (Month 40), n=112Supine HR, Visit 13 (Month 44), n=105Supine HR, Visit 14 (Month 48), n=104Supine HR, Visit 15 (Month 52), n=91Supine HR, Visit 16 (Month 56), n=77Supine HR, Visit 17 (Month 60), n=92Supine HR, Visit 18 (Month 64), n=58Supine HR, Visit 19 (Month 68), n=53Supine HR, Visit 20 (Month 72), n=61Supine HR, Visit 21 (Month 76), n=43Supine HR, Visit 22 (Month 80), n=37Supine HR, Visit 23 (Month 84), n=32Supine HR, Visit 24 (Month 88), n=29Supine HR, Visit 25 (Month 92), n=25Supine HR, Visit 26 (Month 96), n=26Supine HR, Visit 27 (Month 100), n=20Supine HR, Visit 28 (Month 104), n=17Supine HR, Visit 29 (Month 108), n=13Supine HR, Visit 30 (Month 112), n=4Supine HR, Visit 31 (Month 116), n=3Supine HR, Visit 32 (Month 120), n=1Supine HR, Follow up, n=267Standing HR, Visit 1 (Month 1), n=357Standing HR, Visit 2 (Month 3), n=328Standing HR, Visit 3 (Month 6), n=287Standing HR, Visit 4 (Month 9), n=252Standing HR, Visit 5 (Month 12), n=235Standing HR, Visit 6 (Month 16), n=202Standing HR, Visit 7 (Month 20), n=181Standing HR, Visit 8 (Month 24), n=167Standing HR, Visit 9 (Month 28), n=147Standing HR, Visit 10 (Month 32), n=128Standing HR, Visit 11 (Month 36), n=121Standing HR, Visit 12 (Month 40), n=111Standing HR, Visit 13 (Month 44), n=105Standing HR, Visit 14 (Month 48), n=104Standing HR, Visit 15 (Month 52), n=91Standing HR, Visit 16 (Month 56), n=77Standing HR, Visit 17 (Month 60), n=92Standing HR, Visit 18 (Month 64), n=58Standing HR, Visit 19 (Month 68), n=52Standing HR, Visit 20 (Month 72), n=61Standing HR, Visit 21 (Month 76), n=43Standing HR, Visit 22 (Month 80), n=37Standing HR, Visit 23 (Month 84), n=32Standing HR, Visit 24 (Month 88), n=29Standing HR, Visit 25 (Month 92), n=25Standing HR, Visit 26 (Month 96), n=26Standing HR, Visit 27 (Month 100), n=20Syanding HR, Visit 28 (Month 104), n=17Standing HR, Visit 29 (Month 108), n=13Standing HR, Visit 30 (Month 112), n=4Standing HR, Visit 31 (Month 116), n=3Standing HR, Visit 32 (Month 120), n=1Standing HR, Follow up, n=267
Retigabine-0.4-0.50.10.70.01.82.31.92.73.00.83.31.81.02.02.50.95.52.42.12.85.13.53.23.92.13.13.30.53.87.711.02.1-0.1-0.20.31.70.11.61.41.91.62.2-0.62.62.80.83.11.30.64.61.30.70.32.92.32.43.63.15.26.2-0.22.37.310.02.2

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Percentage of Participants With Abnormal Results of Physical Examination

A complete physical examination was performed at the end of each 12 month study cycle (i.e., first year, second year, third year, etc.) during the Open-Label Treatment Phase. The investigator assessed the skin at every clinic visit. If abnormal skin discoloration was confirmed, the participant continued to be followed by the dermatologist. If the abnormal skin discoloration was not confirmed, the investigator resumed assessing the participants skin at all scheduled clinic visits. Only data for abnormal values on physical examination have been presented. Only those participants available at the specified time points were analyzed. (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionPercentage of participants (Number)
Visit 5 (Month 12), n=234Visit 8 (Month 24), n=166Visit 11 (Month 36), n=121Visit 14 (Month 48), n=104Visit 17 (Month 60), n=88Visit 20 (Month 72), n=58Visit 23 (Month 84), n=32Visit 26 (Month 96), n=26Visit 29 (Month 108), n=13Follow up visit, n=260
Retigabine18172119192434353827

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Percentage of Participants With Pigmentation of Non-retinal Ocular Tissue (Non-ret. Pig. Abn)

Non-retinal ocular tissue abnormalities were determined by either an ophthalmologist or retina specialist. Non-ret. Pig. Abn is a composite endpoint assessed by its components: abnormal pigmentation (ABP) of the sclera and/or conjunctiva, ABP of the cornea, ABP of the iris and ABP of the lens. Only those participants with >=1 ophthalmology exam on or before last dose of retigabine are presented. (NCT00310388)
Timeframe: Up to 121 months

InterventionPercentage of participants (Number)
Non-ret. Pig. AbnABP of sclera and/or conjunctivaABP of the corneaABP of the irisABP of the lens
Retigabine28134170

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Percentage of Participants With Retinal Pigmentary Abnormalities (RPA)

RPA was determined by either an ophthalmologist or retina specialist. RPA is the composite endpoint assessed by its components: pigmentary abnormalities (PA) in the macula, PA in the peripheral retina (PR), PA in both macula and PR and PA at location unspecified. Only those participants with >=1 ophthalmology exam on or before last dose of retigabine are presented.. (NCT00310388)
Timeframe: Up to 121 months

InterventionPercentage of participants (Number)
RPAPA in the maculaPA of the PRPA in both the macula and PRPA: location unspecified
Retigabine312222132

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Time From Discontinuation of Retigabine to Resolution of Abnormal Eye Pigmentation

Retinal pigmentary abnormality was determined by either an ophthalmologist or retina specialist. Retinal pigmentary abnormality included pigmentary abnormality of macula, pigmentary abnormality of the peripheral retina and non-retinal ocular pigmentary abnormality. If a participant had pigmentary abnormality of macula and pigmentary abnormality of the peripheral retina both should be resolved in order for retinal pigmentary abnormality to be considered resolved. If a participant had non-retinal ocular pigmentary abnormality in more than location (conjunctiva, sclera, cornea, iris or lens), all should be resolved for non-retinal pigmentary abnormality to be considered resolved. Only participants with resolution of the specified pigmentation are included in this analysis. (NCT00310388)
Timeframe: 3 years and 10 months

InterventionDays (Median)
Pigmentary Abnormality of Macula, n=1Pigmentary Abnormality of Peripheral Retina, n=2Non-Retinal Ocular Pigmentary Abnormality, n=8
SFUCP233.0307.0312.0

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Time From Discontinuation of Retigabine to Resolution of All Dermatologist-Confirmed Abnormal Discoloration

Assessments were at approximately 6-monthly intervals (timed relative to the participants previous dermatology assessment) until the abnormal discoloration either resolved or stabilized (as defined by no changes over 2 consecutive 6-monthly assessments performed by the dermatologist over at least 12 months after discontinuation of retigabine). The assessment of the participant's skin included assessment of the skin around the eyes and the eyelids, lips, nails, and mucosa. Only participants with resolution of the specified tissue are included in this analysis. (NCT00310388)
Timeframe: 3 years and 10 months

InterventionDays (Median)
All, n=7Skin, n=6Lips, n=5Nails,n=7Mucosa, n=8
SFUCP380.0382.5379.0379.0201.0

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Percentage Change in the 28-day Partial Seizure Rate From the Baseline Phase (Obtained During the 8-week Baseline Period of Study VRX-RET-E22-302) to Open-label Treatment.

28-day partial seizure rate observed during the OLE period was compared to the 28-day partial seizure rate observed during the Baseline phase of the double-blind parent study VRX-R ET-E22-302. Percent change from Baseline in 28-day total partial seizure rate was calculated as ([28-day partial seizure frequency for the period of interest - Baseline 28-day partial seizure frequency] / Baseline 28-day partial seizure frequency) × 100 percent. A negative percent change indicated a reduction (improvement) from Baseline, so the best possible outcome was -100 percent. Only those participants with data available at the indicated time point were analyzed. (NCT00310388)
Timeframe: Baseline and up to 121 months

InterventionPercent change (Mean)
Retigabine-36.1

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Change From Baseline in Creatinine, Total Bilirubin and Uric Acid

Clinical chemistry parameters included creatinine, total bilirubin and uric acid. The clinical laboratory evaluations were performed at all study visits during the Open-Label Treatment Phase. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in VRX-RET-E22-302 taken prior to the first active treatment with retigabine. Change from Baseline was calculated by subtracting the Baseline value from the post Baseline values. NA indicates standard deviation could not be calculated as only 1 participant was analyzed. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT00310388)
Timeframe: Baseline and up to 122 months

InterventionMicromoles per liter (Mean)
Creatinine, Visit 1 (Month 1), n=351Creatinine, Visit 1a (Month 2), n=1Creatinine, Visit 2 (Month 3), n=320Creatinine, Visit 2a (Month 4), n=1Creatinine, Visit 3 (Month 6), n=278Creatinine, Visit 4 (Month 9), n=247Creatinine, Visit 5 (Month 12), n=227Creatinine, Visit 6 (Month 16), n=199Creatinine, Visit 7 (Month 20), n=176Creatinine, Visit 8 (Month 24), n=161Creatinine, Visit 9 (Month 28), n=142Creatinine, Visit 10 (Month 32), n=126Creatinine, Visit 11 (Month 36), n=115Creatinine, Visit 12 (Month 40), n=108Creatinine, Visit 13 (Month 44), n=101Creatinine, Visit 14 (Month 48), n=101Creatinine, Visit 15 (Month 52), n=88Creatinine, Visit 16 (Month 56), n=75Creatinine, Visit 17 (Month 60), n=89Creatinine, Visit 18 (Month 64), n=55Creatinine, Visit 19 (Month 68), n=50Creatinine, Visit 20 (Month 72), n=58Creatinine, Visit 21 (Month 76), n=40Creatinine, Visit 22 (Month 80), n=35Creatinine, Visit 23 (Month 84), n=32Creatinine, Visit 24 (Month 88), n=28Creatinine, Visit 25 (Month 92), n=25Creatinine, Visit 26 (Month 96), n=26Creatinine, Visit 27 (Month 100), n=20Creatinine, Visit 28 (Month 104), n=16Creatinine, Visit 29 (Month 108), n=13Creatinine, Visit 30 (Month 112), n=4Creatinine, Visit 31 (Month 116), n=3Creatinine, Visit 32 (Month 120), n=1Creatinine, Follow up, n=260Total Bilirubin, Visit 1 (Month 1), n=351Total Bilirubin, Visit 1a (Month 2), n=1Total Bilirubin, Visit 2 (Month 3), n=322Total Bilirubin, Visit 2a (Month 4), n=1Total Bilirubin, Visit 3 (Month 6), n=278Total Bilirubin, Visit 4 (Month 9), n=245Total Bilirubin, Visit 5 (Month 12), n=227Total Bilirubin, Visit 6 (Month 16), n=200Total Bilirubin, Visit 7 (Month 20), n=176Total Bilirubin, Visit 8 (Month 24), n=162Total Bilirubin, Visit 9 (Month 28), n=141Total Bilirubin, Visit 10 (Month 32), n=126Total Bilirubin, Visit 11 (Month 36), n=116Total Bilirubin, Visit 12 (Month 40), n=107Total Bilirubin, Visit 13 (Month 44), n=101Total Bilirubin, Visit 14 (Month 48), n=100Total Bilirubin, Visit 15 (Month 52), n=88Total Bilirubin, Visit 16 (Month 56), n=76Total Bilirubin, Visit 17 (Month 60), n=90Total Bilirubin, Visit 18 (Month 64), n=55Total Bilirubin, Visit 19 (Month 68), n=51Total Bilirubin, Visit 20 (Month 72), n=58Total Bilirubin, Visit 21 (Month 76), n=40Total Bilirubin, Visit 22 (Month 80), n=35Total Bilirubin, Visit 23 (Month 84), n=32Total Bilirubin, Visit 24 (Month 88), n=28Total Bilirubin, Visit 25 (Month 92), n=25Total Bilirubin, Visit 26 (Month 96), n=26Total Bilirubin, Visit 27 (Month 100), n=20Total Bilirubin, Visit 28 (Month 104), n=16Total Bilirubin, Visit 29 (Month 108), n=13Total Bilirubin, Visit 30 (Month 112), n=4Total Bilirubin, Visit 31 (Month 116), n=3Total Bilirubin, Visit 32 (Month 120), n=1Total Bilirubin, Follow up, n=258Uric acid, Visit 1 (Month 1), n=352Uric acid, Visit 1a (Month 2), n=1Uric acid, Visit 2 (Month 3), n=322Uric acid, Visit 2a (Month 4), n=1Uric acid, Visit 3 (Month 6), n=279Uric acid, Visit 4 (Month 9), n=248Uric acid, Visit 5 (Month 12), n=228Uric acid, Visit 6 (Month 16), n=200Uric acid, Visit 7 (Month 20), n=176Uric acid, Visit 8 (Month 24), n=163Uric acid, Visit 9 (Month 28), n=142Uric acid, Visit 10 (Month 32), n=126Uric acid, Visit 11 (Month 36), n=116Uric acid, Visit 12 (Month 40), n=108Uric acid, Visit 13 (Month 44), n=101Uric acid, Visit 14 (Month 48), n=101Uric acid, Visit 15 (Month 52), n=88Uric acid, Visit 16 (Month 56), n=76Uric acid, Visit 17 (Month 60), n=90Uric acid, Visit 18 (Month 64), n=55Uric acid, Visit 19 (Month 68), n=50Uric acid, Visit 20 (Month 72), n=58Uric acid, Visit 21 (Month 76), n=40Uric acid, Visit 22 (Month 80), n=35Uric acid, Visit 23 (Month 84), n=32Uric acid, Visit 24 (Month 88), n=28Uric acid, Visit 25 (Month 92), n=25Uric acid, Visit 26 (Month 96), n=26Uric acid, Visit 27 (Month 100), n=20Uric acid, Visit 28 (Month 104), n=16Uric acid, Visit 29 (Month 108), n=13Uric acid, Visit 30 (Month 112), n=4Uric acid, Visit 31 (Month 116), n=3Uric acid, Visit 32 (Month 120), n=1Uric acid, Follow up, n=261
Retigabine1.80.00.99.00.70.10.00.80.60.0-0.21.3-0.30.80.5-0.30.81.1-1.6-0.7-0.9-3.6-0.7-2.2-1.4-4.1-3.2-2.6-3.9-4.2-7.7-6.3-18.7-19.00.63.50.03.56.03.63.53.43.63.73.83.74.14.03.73.93.73.73.63.83.73.13.33.73.23.43.65.55.55.25.85.55.02.711.00.02.141.05.5107.04.37.85.37.98.810.17.78.79.813.813.46.814.212.014.714.825.214.425.518.321.414.029.614.314.2-1.89.246.3-8.0-23.011.7

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Scores for Reported Health Transition at the End of the MP for All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP

"The least square (LS) mean score for reported health transition was calculated based on the scores (ranging from 1 to 5) given by the participant in answer to the following question: Compared to 1 year ago, how would you rate your health in general now?. Lower numbers represent a better state of health." (NCT00612105)
Timeframe: End of maintenance Phase (MP) (Week 4)

InterventionScores on a scale (Least Squares Mean)
1: Retigabine2.68
2: Placebo2.37

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"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) Subtype Deafferentation Type 2 (D Type 2)"

"Participants stratified into 4 different PHN subtypes based on NPPE. Participants with marked sensory loss and severe spontaneous burning pain without allodynia associated with reorganization of central nerve fibers were stratified in the deafferentation type 2 subtype. Based on their pain experienced during the previous 24 hours, participants assessed their pain every evening at bedtime in an electronic diary by choosing the appropriate number on an 11-point NRS: 0, no pain; 1 to 3, mild; 4 to 6, moderate; 7 to 10, severe pain." (NCT00612105)
Timeframe: Baseline and Week 4 Maintenance phase (MP)

InterventionScores on a scale (Mean)
1: Retigabine-4.14
2: Placebo0.00

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"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) Subtype Irritable Nociceptors"

"Participants were stratified into four different PHN subtypes based on the NPPE. Participants with pain, abnormal sensitization of the specific receptor (irritable nociceptors), and with minimal sensory loss were stratified in theirritable nociceptors subtype. Based on their pain experienced during the previous 24 hours, participants assessed their pain every evening at bedtime in an electronic diary by choosing the appropriate number on an 11-point NRS: 0, no pain; 1 to 3, mild; 4 to 6, moderate; 7 to 10, severe pain." (NCT00612105)
Timeframe: Baseline and Week 4 Maintenance Phase (MP)

InterventionScores on a scale (Mean)
1: Retigabine-1.78
2: Placebo-2.85

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"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) Subtype Unclassifiable"

"Participants stratified into 4 different PHN subtypes based on NPPE. Participants who could not be specifically differentiated in any of the other three subtypes were stratified as unclassifiable meaning that the participants could not be classified into any of the predefined PHN subtypes. Based on their pain experienced during the previous 24 hours, participants assessed their pain every evening at bedtime in an electronic diary by choosing the appropriate number on an 11-point NRS: 0, no pain; 1 to 3, mild; 4 to 6, moderate; 7 to 10, severe pain." (NCT00612105)
Timeframe: Baseline and Week 4 Maintenance Phase (MP)

InterventionScores on a scale (Mean)
1: Retigabine-2.69
2: Placebo-1.87

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"Change From Baseline in the Average Diary Pain Score to the Last 7 Days of the Maintenance Phase by Post Herpetic Neuralgia (PHN) SubtypeDeafferentation Type 1 (D Type 1)"

"Participants stratified into 4 different PHN subtypes based on NPPE. Participants with marked sensory loss associated with severe burning pain upon slight mechanical stimuli (allodynia) were stratified in the deafferentation type 1 subtype. Based on their pain experienced during the previous 24 hours, participants assessed their pain every evening at bedtime in an electronic diary by choosing the appropriate number on an 11-point NRS: 0, no pain; 1 to 3, mild; 4 to 6, moderate; 7 to 10, severe pain." (NCT00612105)
Timeframe: Baseline and Week 4 Maintenance Phase (MP)

InterventionScores on a scale (Mean)
1: Retigabine-3.57
2: Placebo-5.29

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Change From Baseline to the End of the MP (Included All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP) in Sleep Quantity

Change from Baseline in sleep quantity was calculated by subtracting the average value of sleep quantity, calculated in hours, at the end of the MP from the average Baseline value. (NCT00612105)
Timeframe: Baseline and End of Maintenance Phase (MP) (Week 4).

InterventionHours (Mean)
1: Retigabine0.5
2: Placebo0.2

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Primary Endpoint Will be the Change From Baseline in Average Pain Score Over the Last 7 Days of the Maintenance Phase.

Change from Baseline (BL) was calculated as the value of the average diary pain score for the last 7 days of the MP minus the value of the average pain score at BL (post wash-out period, including the average of the last 7 available entries prior to/including the diary pain measurement on Titration Day 0). Based on their pain experienced during the previous 24 hours, participants assessed their pain every evening at bedtime in an electronic diary by choosing the appropriate number on an 11-point Numerical Rating Scale (NRS): 0, no pain; 1 to 3, mild; 4 to 6, moderate; 7 to 10, severe pain. (NCT00612105)
Timeframe: Baseline and Week 4 (Maintenance Phase-MP)

InterventionScores on a scale (Least Squares Mean)
1: Retigabine-2.65
2: Placebo-2.22

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"Number of Participants With the Indicated Responses at Baseline to the Questions of Is it Cool? and Is it Painful? in an Assessment of Cold Threshold and Allodynia"

"At Baseline the investigator conducted the NPPE to examine hyperalgesia and allodynia (tactile and cold). Cold threshold and allodynia was assessed to determine if a metal bar felt cool and if it felt painful, based on the questions:Is it cool? and Is it painful?" (NCT00612105)
Timeframe: Timeframe: Baseline Phase (Day -7 to Randomization Day 0)

,
InterventionParticipants (Number)
Is Not CoolIs CoolIs Not PainfulIs Painful
1: Retigabine191056757
2: Placebo9523427

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"Number of Participants With the Indicated Responses at the End of the MP to the Question: How Painful Was the Affected Side Compared to the Opposite Side? in an Assessment of Tactile Allodynia"

"At the end of the MP, the investigator conducted the NPPE (an examination of the effect of retigabine on sensory abnormalities) to examine hyperalgesia and allodynia (tactile and cold). Tactile allodynia was assessed with a foam brush, based on the question:How painful was the affected side compared to the opposite side? End of Maintenance Phase includes participants who completed Week 4 of the MP and who terminated early during the MP." (NCT00612105)
Timeframe: End of Maintenance Phase (MP) (Week 4)

,
InterventionParticipants (Number)
More PainfulThe SameLess Painful
1: Retigabine304410
2: Placebo29208

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"Number of Participants With the Indicated Responses at the End of the MP to the Questions of Is it Cool? and Is it Painful? in an Assessment of Cold Threshold and Allodynia"

"At the end of the MP, the investigator conducted the NPPE (an examination of the effect of retigabine on sensory abnormalities) to examine hyperalgesia and allodynia (tactile and cold). Cold threshold and allodynia was assessed to determine if a metal bar felt cool and if it felt painful, based on the questions:Is it cool? and Is it painful?" (NCT00612105)
Timeframe: End of Maintenance Phase (MP) (Week 4)

,
InterventionParticipants (Number)
Is Not CoolIs CoolIs Not PainfulIs Painful
1: Retigabine14706321
2: Placebo7504413

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"Number of Subjects With the Indicated Responses at Baseline to the Questions: How Sharp Was the Affected Side Compared to the Opposite Side? and How Painfule Was the Affected Side Compared to the Opposite Side? in an Assessment of Hyperalgesia"

"At Baseline the investigator conducted the NPPE to examine hyperalgesia and allodynia (tactile and cold). Hyperalgesia is defined as increased sensitivity to pain, which may be caused by damage to peripheral nerves. It was assessed with a pinprick brush, based on the questions: How sharp was the affected side compared to the opposite side? and How painfule was the affected side compared to the opposite side?" (NCT00612105)
Timeframe: Baseline Phase (Day -7 to Randomization Day 0)

,
InterventionParticipants (Number)
More SharpThe Same(sharp)Less sharpMore PainfulThe Same(pain)Less Painful
1: Retigabine66751711934
2: Placebo32101938716

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Change From Baseline in Pain Intensity Score at Each Week During the Maintenance Phase (MP)

Least square mean (LSM) of pain intensity was calculated from the NRS score entered by the participants in their diaries at each week during the MP. Participants rated their pain during the previous 24 hours at all clinic visits using an NRS: 0, no pain; 1-3, mild; 4-6, moderate; 7-10 (worst possible pain), severe pain. Change from Baseline was calculated by subtracting the value of the average of the LSM of the NRS score at each week during the MP (the last 7 available diary entries in the MP were used, provided at least 3 existed) from the average Baseline value of the LSM of the NRS score. (NCT00612105)
Timeframe: Baseline and Weeks 1, 2, 3, and 4 (MP)

,
InterventionScores on a scale (Mean)
Category Title 1: Week 1; n=88, 57Category Title 2: Week 2; n=86, 56Category Title 3: Week 3; n=78, 56Category Title 4: Week 4; n=75, 55
1: Retigabine-2.35-2.64-2.82-2.82
2: Placebo-2.08-2.34-2.43-2.47

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Change From Baseline to the End of the MP (Included All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP) in Medical Outcomes Study (MOS) Sleep Scale Scores

Change from BL (average value of MOS Sleep Scale score including Overall Sleep Problem [OSP] Index at end of MP minus average BL value) to the end of the MP was summarized for the OSP Index, in addition to the following subscales of the MOS Sleep Scale: Sleep Disturbance; Sleep Adequacy; Snoring; Awakening with Shortness of Breath or with a Headache; Somnolence; and Optimal Sleep. Each item was transformed to a scale with a range of 0-100. For each subscale, except Optimal Sleep, higher scores indicate a greater level of what was being measured (i.e., more snoring, more sleep adequacy, etc.). (NCT00612105)
Timeframe: Baseline and End of Maintenance Phase (MP) (Week 4).

,
InterventionScores on a scale (Mean)
Category Title 1: Overall Sleep Problem IndexCategory Title 2: Sleep DisturbanceCategory Title 3: Sleep AdequacyCategory Title 4: SnoringTitle 4:Awaken Short of Breath or with a HeadacheCategory Title 6: Somnolence
1: Retigabine-5.70-11.479.050.7-4.88.10
2: Placebo-6.88-9.435.26-2.5-4.6-3.39

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Change From Baseline to Weeks 2 and 4 of the Maintenance Phase in Mean In-clinic Pain Assessment

Participants rated their pain during the previous 24 hours at all clinic visits using an 11-point Numerical Rating Scale (NRS): 0, no pain; 1 to 3, mild; 4 to 6, moderate; 7 to 10, severe pain (10=worst possible pain). Change in In-clinic Pain Assessment was calculated by subtracting the average score on the NRS at Week 2 and Week 4 (values for each week were observed cases) of the MP from the average score on the NRS at Baseline (the last non-missing measurement prior to taking study drug). (NCT00612105)
Timeframe: Baseline and Weeks 2 and 4 (Maintenance Phase - MP)

,
InterventionScores on a scale (Mean)
Category Title 1:Week 2; n=88, 57Category Title 2: Week 4, n=82, 56
1: Retigabine-2.7-2.9
2: Placebo-2.4-2.4

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Mean Score on the Treatment Satisfaction Questionnaire for Medication (TSQM) at the End of the Maintenance Phase

The TSQM assessed the participant's overall satisfaction with treatment, including subscales to assess effectiveness, side effects, convenience, and global satisfaction. Raw scores from the scale were transformed into a numeric scale ranging from 0 to 100, where higher scores indicated greater satisfaction with treatment. TSQM was reported at the end of the MP. Participants who completed Week 4 of the MP and who terminated early during the MP were assessed. (NCT00612105)
Timeframe: End of Maintenance Phase (MP) (Week 4)

,
InterventionScores on a scale (Mean)
Category Title 1: Effectiveness; n=83, 57Category Title 2: Side Effects; n=82, 57Category Title 3: Convenience; n=84, 57Category Title 4: Global Satisfaction; n=84, 57
1: Retigabine59.1067.7669.9758.67
2: Placebo49.5192.1174.6652.88

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Number of Participants Classified as Responders, With a 50% and 30% Pain Reduction From Baseline to the Last 7 Days of the Maintenance Phase

Responders were defined as participants achieving a mean >=50% or >=30% pain reduction based on the NRS score from Baseline to the last 7 days of the MP. Those participants who did not have at least 3 diary entries in the MP, those who withdrew during the Titration Phase (TP), and non-completers (NC: who did not complete the study) were classified as non-responders. The number of responders and responders including non-completers from Baseline to the last 7 days of the MP were reported. (NCT00612105)
Timeframe: Baseline and Week 4 Maintenance Phase (MP)

,
InterventionParticipants (Number)
Responders with>=50% Pain ReductionResponders with >=30% Pain ReductionResponders plus NC with>=50% Pain ReductionResponders plus NC with>=30% Pain Reduction
1: Retigabine33523349
2: Placebo22322231

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Number of Participants With the Indicated Change From Baseline to the End of the Maintenance Phase in Optimal Sleep Based on the Sleep Quantity Domain of the MOS Sleep Scale

"Optimal Sleep was based on the Sleep Quantity domain of the MOS Sleep Scale and included the options of Yes if sleep quantity was 7-8 hours, and No otherwise. Improved indicated a change in response of no at baseline to yes at the end of the MP, Same indicated no change in response, and Worse indicated a change in response from yes at baseline to no at the end of the MP." (NCT00612105)
Timeframe: Baseline and End of Maintenance Phase (MP) (Week 4).

,
InterventionParticipants (Number)
Category Title 1: ImprovedCategory Title 2: SameCategory Title 3: Worse
1: Retigabine12639
2: Placebo8427

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Number of Rescue Medication Tablets Taken Per Day During the Maintenance Phase (MP)

Participants recorded the number of acetaminophen tablets taken during the previous 24 hours in a participant diary. Rescue medication was summarized as the mean number of doses taken per day during each week of the Maintenance Phase (MP) and the mean number of doses taken during all MP weeks. (NCT00612105)
Timeframe: Weeks 1, 2, 3, and 4 Maintenance Phase

,
InterventionTablets/Day (Mean)
Category Title 1: Week 1; n=88, 57Category Title 2: Week 2; n=86, 56Category Title 3: Week 3; n=82, 56Category Title 4: Week 4; n=76, 55Category Title 5: All Maintenance Phase Weeks; n=8
1: Retigabine0.920.890.740.830.87
2: Placebo0.840.790.850.770.83

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Scores on the Brief Pain Inventory-Short Form (BPI-SF) at the End of the MP for All Participants Who Completed Week-4 of the MP and Who Terminated Early During the MP

The BPI-SF assessed pain intensity, pain relief from medication, and pain interference with function over the previous 24 hours. Pain intensity was assessed by the mean of 4 intensity items rated on a 0-10 categorical scale: 0=no pain, 10=pain as bad as you can imagine. Pain interference was assessed by determining the mean of the 7 interference items on a 0-10 categorical scale ranging from 0=does not interfere to 10=completely interferes. The level of pain relief provided by treatment was assessed on an 11-point categorical scale ranging from 0% to 100% (NCT00612105)
Timeframe: End of Maintenance Phase (MP) (Week 4)

,
InterventionScores on a scale (Mean)
Category Title 1: Pain Intensity; n=74, 49Category Title 2: Pain Interference; n=75, 49Category Title 3: Pain Relief; n=74, 48
1: Retigabine3.172.0058.4
2: Placebo3.582.2749.4

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Scores on the Medical Outcomes Short Form-36 (SF-36) at the End of the MP for All Participants Who Completed Week 4 of the MP and Who Terminated Early During the MP

Least square (LS) mean calculated based on participant's assessment of SF-36,a quality of life questionnaire consisting of 36 items grouped into 8 domains. These 8 domains further grouped into 2 overall summary measures,physical health and mental health. Higher scores on SF-36 represented better state of health. Physical/mental components summarized the data of all the physical/mental domains of SF-36 and higher scores represented better state of health. (NCT00612105)
Timeframe: End of Maintenance Phase (MP) (Week 4)

,
InterventionScores on a scale (Least Squares Mean)
Category Title 1: General health; n=83, 55Category Title 2: Physical Functioning; n=84, 55Category Title3: Role limitations, physical; n=84,Category Title4: Role limitations, emotional; n=84tegory Title 5: Social Functioning; n=84, 55Category Title 6: Bodily Pain; n=84, 55Category Title 7: Vitality; n=84, 55Category Title 8: Mental Health; n=84, 55Category Title9: Physical Component Summary; n=83,Category Title10: Mental Component Summary; n=83,
1: Retigabine51.1243.8243.2244.3150.1447.2351.6851.6645.2651.22
2: Placebo50.4745.5443.3042.6850.2545.6053.9451.3445.6550.91

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"Number of Participants With Indicated Responses at the End of the MP to the Questions: How Sharp Was the Affected Side Compared to the Opposite Side? and How Painful Was the Affected Side Compared to the Opposite Side? in an Assessment of Hyperalgesia"

"At the end of the MP, the investigator conducted the NPPE (an examination of the effect of retigabine on sensory abnormalities) to examine hyperalgesia and allodynia (tactile and cold). Hyperalgesia is defined as increased sensitivity to pain, which may be caused by damage to peripheral nerves. It was assessed with a pinprick brush, based on the questions:How sharp was the affected side compared to the opposite side? and How painful was the affected side compared to the opposite side?" (NCT00612105)
Timeframe: End of Maintenance Phase (MP) (Week 4)

,
InterventionParticipants (Number)
More SharpThe Same(sharp)Less SharpMore PainfulThe Same(pain)Less Painful
1: Retigabine292431312825
2: Placebo241914241815

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"Number of Participants With the Indicated Responses at Baseline to the Question: How Painful Was the Affected Side Compared to the Opposite Side? in an Assessment of Tactile Allodynia"

"At Baseline, the investigator conducted the Neuropathic Pain Physical Examination (NPPE) to examine hyperalgesia and allodynia (tactile and cold). Tactile allodynia was assessed with a foam brush, based on the question:How painful was the affected side compared to the opposite side?." (NCT00612105)
Timeframe: Baseline Phase (Day -7 to Randomization Day 0)

,
InterventionParticipants (Number)
Category Title 1: More PainfulCategory Title 2: The SameCategory Title 3: Less Painful
1: Retigabine891916
2: Placebo40147

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Number of Participants With the Indicated Overall Patient Global Impression of Change (PGIC)

For the PGIC assessment, participants were asked to assess their overall status since they initiated the study drug to the end of the Maintenance Phase using a 7-point categorical scale: 1=very much improved, 2=much improved, 3=minimally improved, 4=no change, 5=minimally worse, 6=much worse, and 7=very much worse. All participants who completed Week 4 of the Maintenance Phase and participants who terminated early during the Maintenance Phase were assessed. (NCT00612105)
Timeframe: Baseline to the end of Maintenance Phase (MP) (Week 4)

,
InterventionParticipants (Number)
Category Title 1: Very Much ImprovedCategory Title 2: Much ImprovedCategory Title 3: Minimally ImprovedCategory Title 4: No ChangeCategory Title 5: Minimally WorseCategory Title 6: Much WorseCategory Title 7: Very Much Worse
1: Retigabine20271914310
2: Placebo8151021210

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Change From Baseline in the PGI-C Score: Current Ability to do the Things You Need to do

The PGI-C questionnaire was to be completed by the participant. Participants were asked the following question: Compared to before you started this study, how would you rate your current ability to do the things you need to do: Much better, Moderately better, A little better, Unchanged, A little worse, Moderately worse, Much worse? Rating scores are integers from 1 to 7, with 1=Much better and 7=Much worse. (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

InterventionScores on a scale (Mean)
RTG Flexible Dose Plus C/O3.3
RTG Flexible Dose Plus Lamotrigine2.9
RTG Flexible Dose Plus Levetiracetam3.1
RTG Flexible Dose Plus Valproic Acid2.6
Total3.0

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Change From Baseline in the PGI-C Score: Current Ability to do the Things You Want to do

The PGI-C questionnaire was to be completed by the participant. Participants were asked the following question: Compared to before you started this study, how would you rate your current ability to do the things you want to do: Much better, Moderately better, A little better, Unchanged, A little worse, Moderately worse, Much worse? Rating scores are integers from 1 to 7, with 1=Much better and 7=Much worse. (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

InterventionScores on a scale (Mean)
RTG Flexible Dose Plus C/O3.4
RTG Flexible Dose Plus Lamotrigine2.8
RTG Flexible Dose Plus Levetiracetam3.0
RTG Flexible Dose Plus Valproic Acid2.5
Total2.9

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Change From Baseline in the SF-36v2 Mental Component Summary Score at Week 20/Early Withdrawal

The SF-36 v2 Health Survey is a self-administered, generic, 36-item questionnaire designed to measure 8 domains of functional health status and well-being: physical functioning, role-physical, bodily pain, general health perceptions, vitality, social functioning, role-emotional, and mental health. Each domain is scored from 0 (poorer health) to 100 (better health).The mental component summary (MCS) score is a summary score representing overall mental health, which is derived from the 8 domains. As with the domains, MCS scores range from 0 to 100; higher scores represent better health. Change from Baseline was calculated as the post-Baseline score minus the Baseline score. Positive changes from Baseline indicate improvement. (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

InterventionScores on a scale (Mean)
RTG Flexible Dose Plus C/O-2.59
RTG Flexible Dose Plus Lamotrigine0.66
RTG Flexible Dose Plus Levetiracetam2.75
RTG Flexible Dose Plus Valproic Acid3.79
Total0.94

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Change From Baseline in the SF-36v2 Physical Component Summary Score at Week 20/Early Withdrawal

The SF-36 v2 Health Survey is a self-administered, generic, 36-item questionnaire designed to measure 8 domains of functional health status and well-being: physical functioning, role-physical, bodily pain, general health perceptions, vitality, social functioning, role-emotional, and mental health. Each domain is scored from 0 (poorer health) to 100 (better health).The physical component summary (PCS) score is a summary score representing overall physical health, which is derived from the 8 domains. As with the domains, PCS scores range from 0 to 100; higher scores represent better health. Change from Baseline was calculated as the post-Baseline score minus the Baseline score. Positive changes from Baseline indicate improvement. (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

InterventionScores on a scale (Mean)
RTG Flexible Dose Plus C/O0.17
RTG Flexible Dose Plus Lamotrigine1.22
RTG Flexible Dose Plus Levetiracetam-0.58
RTG Flexible Dose Plus Valproic Acid0.82
Total0.44

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Number of Participants With a >=50% Reduction in Partial-onset Seizure (POS) Frequency From Baseline

The number of participants experiencing a >=50% reduction from Baseline (BL) in POS frequency during the Treatment Phase (TP) (i.e., Titration Phase and Flexible Dose Evaluation [FDE] Phase) was measured. A POS has its onset in a limited area on one side of the brain. POSs may remain limited or may spread to involve both sides of the brain. For both the Baseline Phase and the TP, seizure frequency was calculated as a 28-day rate using the following formula: 28 x {[(number of countable partial seizures in Phase) + (10 x number of days with innumerable seizures in Phase) + (number of occurrences of status epilepticus in Phase)] / number of applicable days in the Phase}, where all days in the Phase are considered applicable (including days with 0 seizures), except for days on which the participant failed to complete the Seizure Diary. >= 50% reduction from BL is calculated as 100 x (28-day partial seizure rate [PSR] for the TP - 28-day PSR for the BL Phase) / 28-day PSR for the BL Phase. (NCT01227902)
Timeframe: From Baseline through Week 20 (Day 140)/Early Withdrawal

Interventionparticipants (Number)
RTG Flexible Dose Plus C/O22
RTG Flexible Dose Plus Lamotrigine16
RTG Flexible Dose Plus Levetiracetam22
RTG Flexible Dose Plus Valproic Acid29
Total89

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Percent Change From Baseline in Functional Status: Percentage of Days With no Missed Work or School Time

"Participants were asked the following question daily: Did you miss any time from work or school in the last 24 hours due to epilepsy? Possible responses were Yes, No, and NA=Not Applicable (no planned work or school in the last 24 hours). The variable summarized is the percentage of days with no missed work or school. Baseline and Treatment Phase averages were calculated for each participant. The denominators for these by-phase averages were the number of non-missing days for each variable and phase. The by-phase averages were used as follows in the calculation of percent change from Baseline for each participant: 100 x Treatment Phase average - Baseline Phase average) / Baseline Phase average. A positive percent change from Baseline indicates a reduction from Baseline in missed work or school." (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

InterventionPercent change (Mean)
RTG Flexible Dose Plus C/O53.5
RTG Flexible Dose Plus Lamotrigine4.9
RTG Flexible Dose Plus Levetiracetam3.7
RTG Flexible Dose Plus Valproic Acid4.5
Total17.0

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Percent Change From Baseline in Partial-onset Seizure Frequency

Percent change from Baseline was calculated as the difference in the partial-onset seizure frequency (Treatment Phase minus the Baseline Phase) divided by the Baseline Phase frequency, multiplied by 100. Negative values indicate reductions from Baseline. A partial-onset seizure is a seizure that has its onset in a limited area on one side of the brain. Partial-onset seizures may remain limited or may spread to involve both sides of the brain. (NCT01227902)
Timeframe: From Baseline through Week 20 (Day 140)/Early Withdrawal

Interventionpercent change (Mean)
RTG Flexible Dose Plus C/O-24.6
RTG Flexible Dose Plus Lamotrigine-27.8
RTG Flexible Dose Plus Levetiracetam-28.7
RTG Flexible Dose Plus Valproic Acid-27.1
Total-27.0

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Change From Baseline in the Short Form 36 Health Survey, Version 2 (SF-36v2) Domain Scores at Week 20/Early Withdrawal

The SF-36v2 health survey is a self-administered, generic, 36-item questionnaire designed to measure 8 domains of functional health status and well-being: physical functioning, role-physical, bodily pain, general health perceptions, vitality, social functioning, role-emotional, and mental health. Each domain is scored from 0 (poorer health) to 100 (better health). Change from Baseline was calculated as the post-Baseline score minus the Baseline score. Positive changes from Baseline indicate improvement. (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

,,,,
InterventionScores on a scale (Mean)
Physical FunctioningRole-PhysicalBodily PainGeneral HealthVitalitySocial FunctioningRole-EmotionalMental Health
RTG Flexible Dose Plus C/O-0.54-1.310.92-0.35-2.94-1.83-1.43-2.04
RTG Flexible Dose Plus Lamotrigine0.891.040.622.550.520.581.070.72
RTG Flexible Dose Plus Levetiracetam-0.700.311.280.680.471.842.192.48
RTG Flexible Dose Plus Valproic Acid0.461.872.812.451.562.104.363.31
Total0.040.421.391.30-0.230.531.410.94

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Number of Participants With a >=25%, >=75%, or 100% Reduction in Partial-onset Seizure Frequency From Baseline

The number of participants experiencing a >=25%, >=75%, and 100% reduction from Baseline in partial-onset seizure frequency during the Treatment Phase (TP) (i.e., Titration Phase and Flexible Dose Evaluation [FDE] Phase) was measured. A partial-onset seizure is a seizure that has its onset in a limited area on one side of the brain. Partial-onset seizures may remain limited or may spread to involve both sides of the brain. (NCT01227902)
Timeframe: From Baseline through Week 20 (Day 140)/Early Withdrawal

,,,,
Interventionparticipants (Number)
>=25%>=75%100%
RTG Flexible Dose Plus C/O27120
RTG Flexible Dose Plus Lamotrigine3382
RTG Flexible Dose Plus Levetiracetam3081
RTG Flexible Dose Plus Valproic Acid37122
Total127405

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Number of Participants With the Indicated Reduction or Increase From Baseline in Partial-onset Seizure Frequency

Participants were assessed for the percent change from Baseline in seizure frequency; changes were categorized as Any Decrease (>0 to 25%, 25 to <50%, 50 to 75%, >75 to 100%) or No Change or Any Increase (>25%, 0 to 25%). A partial-onset seizure is a seizure that has its onset in a limited area on one side of the brain. Partial-onset seizures may remain limited or may spread to involve both sides of the brain. (NCT01227902)
Timeframe: From Baseline through Week 20 (Day 140)/Early Withdrawal

,,,,
Interventionparticipants (Number)
Any decrease>0 to <25% decrease25 to <50% decrease50 to 75% decrease>75 to 100% decreaseNo change or any increase>25% increase0 to 25% increase
RTG Flexible Dose Plus C/O43165101212102
RTG Flexible Dose Plus Lamotrigine43101788743
RTG Flexible Dose Plus Levetiracetam3668148853
RTG Flexible Dose Plus Valproic Acid44781712761
Total1663938494034259

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Number of Participants With the Indicated Response for the Current Ability to do the Things You Need to do Component of the PGI-C Score

The PGI-C questionnaire was to be completed by the participant. Participants were asked the following question: Compared to before you started this study, how would you rate your current ability to do the things you need to do: Much better, Moderately better, A little better, Unchanged, A little worse, Moderately worse, Much worse? (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

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Interventionparticipants (Number)
Much betterModerately betterA little betterUnchangedA little worseModerately worseMuch worse
RTG Flexible Dose Plus C/O5131019222
RTG Flexible Dose Plus Lamotrigine911617300
RTG Flexible Dose Plus Levetiracetam69617101
RTG Flexible Dose Plus Valproic Acid1014911101
Total30473164724

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Number of Participants With the Indicated Response for the Current Ability to do the Things You Want to do Component of the PGI-C Score

The PGI-C questionnaire was to be completed by the participant. Participants were asked the following question: Compared to before you started this study, how would you rate your current ability to do the things you want to do: Much better, Moderately better, A little better, Unchanged, A little worse, Moderately worse, Much worse. (NCT01227902)
Timeframe: Baseline through Week 20/Early Withdrawal

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Interventionparticipants (Number)
Much betterModerately betterA little betterUnchangedA little worseModerately worseMuch worse
RTG Flexible Dose Plus C/O2131120331
RTG Flexible Dose Plus Lamotrigine813420100
RTG Flexible Dose Plus Levetiracetam412617100
RTG Flexible Dose Plus Valproic Acid111698101
Total25543065632

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Time From Discontinuation of Retigabine to Resolution of All Dermatologist-confirmed Abnormal Discoloration

Assessments were at approximately 6-monthly intervals (timed relative to the participants previous dermatology assessment) until the abnormal discoloration either resolved or stabilized (as defined by no changes over 2 consecutive 6-monthly assessments performed by the dermatologist over at least 12 months after discontinuation of retigabine). The assessment of the participant's skin included assessment of the skin around the eyes and the eyelids, lips, nails, and mucosa. Only participants with resolution of the specified tissue are included in this analysis. (NCT01336621)
Timeframe: Up to 2.6 years

InterventionDays (Median)
All; n= 2Skin; n= 1Nails; n= 1Mucosa; n= 3
Retigabine IR in SFUCP582.0192.0253.0701.0

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Number of Participants Experiencing New Seizure Types

Number of participants experiencing new seizure type that is seizure not experienced before were summarized. New seizure types were classified into 5 classes including type A (simple partial seizure), type B (complex partial seizure), type C (Partials, evolving to Secondary Generalized Seizures), type D (Generalized, excluding Myoclonic Seizures), type D2 (Myoclonic Seizures) and type E (Unclassified Seizures). (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Type A; Simple Partial SeizuresType B; Complex Partial SeizuresType C; Partials, evolving to Sec. Gen. SeizuresType D; Generalized, excl. Myoclonic SeizuresType D2; Myoclonic SeizuresType E; Unclassified seizures
Retigabine IR520000

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Duration of Retigabine Exposure

Duration of exposure was calculated from the first dose through the last dose during study including the Taper Phase and presented using median and full range. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionWeeks (Median)
Retigabine IR103.7

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Number of Participants Experiencing an Increase in 28-day Partial-onset Seizure Frequency From Baseline

The seizure frequency was recorded in daily seizure calendar by participants during the treatment period. Baseline assessments in this OLE study are defined by and taken directly from the Baseline assessments in the parent study NCT01336621. (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionParticipants (Number)
Retigabine IR10

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Number of Participants Experiencing Worsening of Seizures

Worsening of seizures was defined as an increase in seizure frequency or the occurrence of a new, more severe seizure type, or status epilepticus occurring in a participant without a history of status epilepticus. An increase in seizure frequency was defined as doubling of the 28-day seizure frequency compared to the 28-day Baseline seizure frequency established in the parent study. Number of participants experiencing worsening of seizure during study period are presented. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Retigabine IR1

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Number of Participants With a Clinically Significant Decrease in Visual Acuity From Initial Examination

Number of participants with a clinically significant decrease in visual acuity from initial examination were evaluated. Only abnormalities occurring on-treatment with retigabine were presented. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Retigabine IR3

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Number of Participants With Decrease in Confrontational Visual Field From Initial Examination

Number of participants with a clinically significant decrease in confrontational visual field from initial examination were evaluated. Only abnormalities occurring on-treatment with retigabine were presented. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Retigabine IR1

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Number of Participants With Pigmentation of Non-retinal Ocular Tissue(s)

Number of participants with abnormal findings after eye examination were evaluated. Pigmentation of non-retinal ocular tissue (s) detected on-treatment with retigabine were presented. Non-retinal pigmentary abnormalities included abnormalities in the sclera and/ or conjunctiva, cornea, iris and lens. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Retigabine IR15

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Number of Participants With Resolution of Dermatologist Confirmed Abnormal Discoloration After Discontinuation of Retigabine

Participants who enter the SFUCP who had an on-treatment finding(s) of abnormal discoloration of skin, lips, nails or mucosa confirmed by a dermatologist entered the SFUCP and underwent assessments performed by a dermatologist at 6-monthly intervals. The assessment of the participant's skin included assessment of the skin around the eyes and the eyelids, lips, nails, and mucosa. (NCT01336621)
Timeframe: Up to 2.6 years

InterventionParticipants (Number)
Retigabine IR in SFUCP2

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Number of Participants With Retinal Pigmentary Abnormalities

Number of participants with abnormal findings after eye examination were evaluated. Only retinal pigmentary abnormalities detected on-treatment with retigabine were presented. Retinal pigmentary abnormalities included abnormalities in the macula, peripheral retina and unspecified location. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Retigabine IR8

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Number of Participants Withdrawn Due to TEAEs

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolonged existing hospitalization, results in disability, is a congenital anomaly/birth defect or is associated with liver injury or impaired liver function. TEAE refers to an AE for which the onset was on or after the date of the first retigabine dose and on or before 30 days after the last retigabine dose date. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Retigabine IR16

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Percent Change From Baseline in 28-day Partial-onset Seizure Frequency

The seizure frequency was recorded in daily seizure calendar by participants during the treatment period. Percent change from Baseline in 28-day partial onset seizure frequency was presented as mean and standard deviation (SD). Baseline assessments in this OLE study are defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Percent change from Baseline was calculated as post-Baseline value minus Baseline value divided by Baseline value into 100. (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionPercent change (Mean)
Retigabine IR-56.9

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Change From Baseline in Absolute Basophils, Absolute Eosinophils, Absolute Lymphocytes, Absolute Monocytes, Absolute Total Neutrophils, Platelet Count and WBC Count

Blood samples were collected from participants for evaluation of change from Baseline in clinical hematology parameters including absolute basophils, eosinophils, lymphocytes, monocytes, neutrophils, platelet count and WBC count. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionGiga cells per liter (GI/L) (Mean)
Basophils; visit 1 (Screening); n= 84Basophils; visit 2 (Week 13); n= 85Basophils; visit 3 (Week 26); n= 71Basophils; visit 4 (Week 39); n= 65Basophils; visit 5 (Week 52); n= 60Basophils; visit 6 (Week 69); n= 58Basophils; visit 7 (Week 86); n= 53Basophils; visit 8 (Week 104); n= 36Basophils; visit 9 (Week 121); n= 35Basophils; visit 10 (Week 138); n= 33Basophils; visit 11 (Week 156); n= 29Basophils; visit 12 (Week 173); n= 24Basophils; visit 13 (Week 190); n= 17Basophils; visit 14 (Week 208); n= 10Basophils; visit 15 (Week 225); n= 4Basophils; visit 16 (Week 242); n= 4Basophils; visit 17 (Week 260); n= 4Basophils; visit 18 (Week 277); n= 2Basophils; withdrawal visit; n= 78Basophils; follow up visit; n= 56Eosinophils; visit 1 (Screening); n= 84Eosinophils; visit 2 (Week 13); n= 85Eosinophils; visit 3 (Week 26); n= 71Eosinophils; visit 4 (Week 39); n= 65Eosinophils; visit 5 (Week 52); n= 60Eosinophils; visit 6 (Week 69); n= 58Eosinophils; visit 7 (Week 86); n= 53Eosinophils; visit 8 (Week 104); n= 36Eosinophils; visit 9 (Week 121); n= 35Eosinophils; visit 10 (Week 138); n= 33Eosinophils; visit 11 (Week 156); n= 29Eosinophils; visit 12 (Week 173); n= 24Eosinophils; visit 13 (Week 190); n= 17Eosinophils; visit 14 (Week 208); n= 10Eosinophils; visit 15 (Week 225); n= 4Eosinophils; visit 16 (Week 242); n= 4Eosinophils; visit 17 (Week 260); n= 4Eosinophils; visit 18 (Week 277); n= 2Eosinophils; withdrawal visit; n= 78Eosinophils; follow up visit; n= 56Lymphocytes; visit 1 (Screening); n= 84Lymphocytes; visit 2 (Week 13); n= 85Lymphocytes; visit 3 (Week 26); n= 71Lymphocytes; visit 4 (Week 39); n= 65Lymphocytes; visit 5 (Week 52); n= 60Lymphocytes; visit 6 (Week 69); n= 58Lymphocytes; visit 7 (Week 86); n= 53Lymphocytes; visit 8 (Week 104); n= 36Lymphocytes; visit 9 (Week 121); n= 35Lymphocytes; visit 10 (Week 138); n= 33Lymphocytes; visit 11 (Week 156); n= 29Lymphocytes; visit 12 (Week 173); n= 24Lymphocytes; visit 13 (Week 190); n= 17Lymphocytes; visit 14 (Week 208); n= 10Lymphocytes; visit 15 (Week 225); n= 4Lymphocytes; visit 16 (Week 242); n= 4Lymphocytes; visit 17 (Week 260); n= 4Lymphocytes; visit 18 (Week 277); n= 2Lymphocytes; withdrawal visit; n= 78Lymphocytes; follow up visit; n= 56Monocytes; visit 1 (Screening); n= 84Monocytes; visit 2 (Week 13); n= 85Monocytes; visit 3 (Week 26); n= 71Monocytes; visit 4 (Week 39); n= 65Monocytes; visit 5 (Week 52); n= 60Monocytes; visit 6 (Week 69); n= 58Monocytes; visit 7 (Week 86); n= 53Monocytes; visit 8 (Week 104); n= 36Monocytes; visit 9 (Week 121); n= 35Monocytes; visit 10 (Week 138); n= 33Monocytes; visit 11 (Week 156); n= 29Monocytes; visit 12 (Week 173); n= 24Monocytes; visit 13 (Week 190); n= 17Monocytes; visit 14 (Week 208); n= 10Monocytes; visit 15 (Week 225); n= 4Monocytes; visit 16 (Week 242); n= 4Monocytes; visit 17 (Week 260); n= 4Monocytes; visit 18 (Week 277); n= 2Monocytes; withdrawal visit; n= 78Monocytes; follow up visit; n= 56Total neutrophils; visit 1 (Screening); n= 84Total neutrophils; visit 2 (Week 13); n= 85Total neutrophils; visit 3 (Week 26); n= 71Total neutrophils; visit 4 (Week 39); n= 65Total neutrophils; visit 5 (Week 52); n= 60Total neutrophils; visit 6 (Week 69); n= 58Total neutrophils; visit 7 (Week 86); n= 53Total neutrophils; visit 8 (Week 104); n= 36Total neutrophils; visit 9 (Week 121); n= 35Total neutrophils; visit 10 (Week 138); n= 33Total neutrophils; visit 11 (Week 156); n= 29Total neutrophils; visit 12 (Week 173); n= 24Total neutrophils; visit 13 (Week 190); n= 17Total neutrophils; visit 14 (Week 208); n= 10Total neutrophils; visit 15 (Week 225); n= 4Total neutrophils; visit 16 (Week 242); n= 4Total neutrophils; visit 17 (Week 260); n= 4Total neutrophils; visit 18 (Week 277); n= 2Total neutrophils; withdrawal visit; n= 78Total neutrophils; follow up visit; n= 56Platelet count; visit 1 (Screening); n= 84Platelet count; visit 2 (Week 13); n= 88Platelet count; visit 3 (Week 26); n= 73Platelet count; visit 4 (Week 39); n= 68Platelet count; visit 5 (Week 52); n= 63Platelet count; visit 6 (Week 69); n= 62Platelet count; visit 7 (Week 86); n= 55Platelet count; visit 8 (Week 104); n= 41Platelet count; visit 9 (Week 121); n= 35Platelet count; visit 10 (Week 138); n= 36Platelet count; visit 11 (Week 156); n= 31Platelet count; visit 12 (Week 173); n= 24Platelet count; visit 13 (Week 190); n= 18Platelet count; visit 14 (Week 208); n= 10Platelet count; visit 15 (Week 225); n= 4Platelet count; visit 16 (Week 242); n= 4Platelet count; visit 17 (Week 260); n= 4Platelet count; visit 18 (Week 277); n= 2Platelet count; withdrawal visit; n= 79Platelet count; follow up visit; n= 58WBC count; visit 1 (Screening); n= 84WBC count; visit 2 (Week 13); n= 78WBC count; visit 3 (Week 26); n= 66WBC count; visit 4 (Week 39); n= 59WBC count; visit 5 (Week 52); n= 54WBC count; visit 6 (Week 69); n= 54WBC count; visit 7 (Week 86); n= 50WBC count; visit 8 (Week 104); n= 33WBC count; visit 9 (Week 121); n= 32WBC count; visit 10 (Week 138); n= 32WBC count; visit 11 (Week 156); n= 27WBC count; visit 12 (Week 173); n= 22WBC count; visit 13 (Week 190); n= 15WBC count; visit 14 (Week 208); n= 10WBC count; visit 15 (Week 225); n= 4WBC count; visit 16 (Week 242); n= 4WBC count; visit 17 (Week 260); n= 4WBC count; visit 18 (Week 277); n= 2WBC count; withdrawal visit; n= 70WBC count; follow up visit; n= 50
Retigabine IR-0.001-0.005-0.0030.0010.002-0.002-0.0020.003-0.002-0.002-0.001-0.0040.000-0.004-0.010-0.003-0.0050.0000.001-0.008-0.011-0.018-0.029-0.050-0.065-0.025-0.016-0.020-0.015-0.052-0.046-0.065-0.104-0.158-0.140-0.070-0.0550.005-0.056-0.091-0.225-0.170-0.133-0.210-0.214-0.178-0.093-0.1110.008-0.177-0.324-0.226-0.325-0.354-0.990-0.818-0.993-1.465-0.153-0.081-0.043-0.0090.039-0.005-0.0060.0180.055-0.0320.0230.005-0.028-0.032-0.078-0.090-0.037-0.0200.0250.0800.041-0.021-0.108-0.354-0.175-0.5820.165-0.159-0.046-0.4030.5190.4120.3610.1440.6690.113-0.825-1.183-0.990-2.2100.2090.095-1.73.75.12.94.16.91.54.58.76.81.99.77.018.9-31.3-9.0-10.0-19.08.98.90.30-0.46-0.24-0.84-0.05-0.41-0.12-0.510.580.220.09-0.150.43-0.49-2.00-2.10-2.03-3.600.13-0.05

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Change From Baseline in Albumin and Total Protein

Blood samples were collected from participants for evaluation of change from Baseline in clinical chemistry parameters including albumin and total protein. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionGram per liter (G/L) (Mean)
Albumin; visit 1 (Screening); n= 83Albumin; visit 2 (Week 13); n= 87Albumin; visit 3 (Week 26); n= 75Albumin; visit 4 (Week 39); n= 70Albumin; visit 5 (Week 52); n= 65Albumin; visit 6 (Week 69); n= 62Albumin; visit 7 (Week 86); n= 54Albumin; visit 8 (Week 104); n= 42Albumin; visit 9 (Week 121); n= 39Albumin; visit 10 (Week 138); n= 36Albumin; visit 11 (Week 156); n= 30Albumin; visit 12 (Week 173); n= 23Albumin; visit 13 (Week 190); n= 19Albumin; visit14 (Week 208); n= 10Albumin; visit 15 (Week 225); n= 5Albumin; visit 16 (Week242); n= 4Albumin; visit 17 (Week 260); n= 4Albumin; visit 18 (Week 277); n= 2Albumin; withdrawal visit; n= 79Albumin; follow up visit; n= 60Total protein; visit 1 (Screening); n= 83Total protein; visit 2 (Week 13); n= 87Total protein; visit 3 (Week 26); n= 75Total protein; visit 4 (Week 39); n= 70Total protein; visit 5 (Week 52); n= 65Total protein; visit 6 (Week 69); n= 62Total protein; visit 7 (Week 86); n= 54Total protein; visit 8 (Week 104); n= 42Total protein; visit 9 (Week 121); n= 39Total protein; visit 10 (Week 138); n= 36Total protein; visit 11 (Week 156); n= 30Total protein; visit 12 (Week 173); n= 23Total protein; visit 13 (Week 190); n= 19Total protein; visit 14 (Week 208); n= 10Total protein; visit 15 (Week 225); n= 5Total protein; visit 16 (Week 242); n= 4Total protein; visit 17 (Week 260); n= 4Total protein; visit 18 (Week 277); n= 2Total protein; withdrawal visit; n= 79Total protein; follow up visit; n= 60
Retigabine IR-1.6-0.9-0.8-0.7-1.5-1.1-1.0-1.6-2.1-2.2-3.0-1.7-2.9-3.9-3.4-4.3-4.0-4.5-1.8-2.3-2.0-1.0-1.5-1.8-2.6-1.4-1.0-1.5-2.1-2.7-3.2-1.1-1.9-3.1-3.4-3.8-2.3-4.5-2.5-2.1

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Change From Baseline in Alk. Phosphatase, ALT, AST, Creatine Kinase and LD Levels

Blood samples were collected from participants for evaluation of change from Baseline in clinical chemistry parameters including alk. phosphatase, ALT, AST, creatine kinase and LD. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionInternational unit per liter (IU/L) (Mean)
Alk. phosphatase; visit 1 (Screening); n= 82Alk. phosphatase; visit 2 (Week 13); n= 86Alk. phosphatase; visit 3 (Week 26); n= 75Alk. phosphatase; visit 4 (week 39); n= 70Alk. phosphatase; visit 5 (Week 52); n= 65Alk. phosphatase; visit 6 (Week 69); n= 62Alk. phosphatase; visit 7 (Week 86); n= 54Alk. phosphatase; visit 8 (Week 104); n= 42Alk. phosphatase; visit 9 (Week 121); n= 39Alk. phosphatase; visit 10 (Week 138); n= 36Alk. phosphatase; visit 11 (Week 156); n= 30Alk. phosphatase; visit 12 (Week 173); n= 23Alk. phosphatase; visit 13 (Week 190); n= 19Alk. phosphatase; visit 14 (Week 208); n= 10Alk. phosphatase; visit 15 (Week 225); n= 5Alk. phosphatase; visit 16 (Week 242); n= 4Alk. phosphatase; visit 17 (Week 260); n= 4Alk. phosphatase; visit 18 (Week 277); n= 2Alk. phosphatase; withdrawal visit; n= 78Alk. phosphatase; follow up visit; n= 60ALT; visit 1 (Screening); n= 83ALT; visit 2 (Week 13); n= 87ALT; visit 3 (Week 26); n= 76ALT; visit 4 (Week 39); n= 70ALT; visit 5 (Week 52); n= 65ALT; visit 6 (Week 69); n= 62ALT; visit 7 (Week 86); n= 54ALT; visit 8 (Week 104); n= 42ALT; visit 9 (Week 121); n= 39ALT; visit 10 (Week 138); n= 36ALT; visit 11 (Week 156); n= 29ALT; visit 12 (Week 173); n= 23ALT; visit 13 (Week 190); n= 19ALT; visit 14 (Week 208); n= 10ALT; visit 15 (Week 225); n= 5ALT; visit 16 (Week 242); n= 4ALT; visit 17 (Week 260); n= 4ALT; visit 18 (Week 277); n= 2ALT; withdrawal visit; n= 79ALT; follow up visit; n= 60AST; visit 1 (Screening); n= 82AST; visit 2 (Week 13); n= 86AST; visit 3 (Week 26); n= 75AST; visit 4 (Week 39); n= 70AST; visit 5 (Week 52); n= 65AST; visit 6 (Week 69); n= 62AST; visit 7 (Week 86); n= 54AST; visit 8 (Week 104); n= 42AST; visit 9 (Week 121); n= 39AST; visit 10 (Week 138); n= 36AST; visit 11 (Week 156); n= 30AST; visit 12 (Week 173); n= 23AST; visit 13 (Week 190); n= 19AST; visit 14 (Week 208); n= 10AST; visit 15 (Week 225); n= 5AST; visit 16 (Week 242); n= 4AST; visit 17 (Week 260); n= 4AST; visit 18 (Week 277); n= 2AST; withdrawal visit; n= 78AST; follow up visit; n= 60Creatine kinase; Visit 1 (Screening); n= 82Creatine kinase; Visit 2 (Week 13); n= 86Creatine kinase; Visit 3 (Week 26); n= 74Creatine kinase; Visit 4 (Week 39); n= 70Creatine kinase; Visit 5 (Week 52); n= 65Creatine kinase; Visit 6 (Week 69); n= 62Creatine kinase; Visit 7 (Week 86); n= 54Creatine kinase; Visit 8 (Week 104); n= 42Creatine kinase; Visit 9 (Week 121); n= 39Creatine kinase; Visit 10 (Week 138); n= 36Creatine kinase; Visit 11 (Week 156); n= 30Creatine kinase; Visit 12 (Week 173); n= 23Creatine kinase; Visit 13 (Week 190); n= 19Creatine kinase; Visit 14 (Week 208); n= 10Creatine kinase; Visit 15 (Week 225); n= 5Creatine kinase; Visit 16 (Week 242); n= 4Creatine kinase; Visit 17 (Week 260); n= 4Creatine kinase; Visit 18 (Week 277); n= 2Creatine kinase; withdrawal visit; n= 78Creatine kinase; follow up visit; n= 60LD; visit 1(Screening); n= 82LD; visit 2 (Week 13); n= 86LD; visit 3 (Week 26); n= 74LD; visit 4 (Week 39); n= 69LD; visit 5 (Week 52); n= 64LD; visit 6 (Week 69); n= 61LD; visit 7 (Week 86); n= 54LD; visit 8 (Week 104); n= 42LD; visit 9 (Week 121); n= 39LD; visit 10 (Week 138); n= 36LD; visit 11 (Week 156); n= 30LD; visit 12 (Week 173); n= 23LD; visit 13 (Week 190); n= 19LD; visit 14 (Week 208); n= 10LD; visit 15 (Week 225); n= 5LD; visit 16 (Week 242); n= 4LD; visit 17 (Week 260); n= 4LD; visit 18 (Week 277); n= 2LD; withdrawal visit; n= 78LD; follow up visit; n= 60
Retigabine IR-2.71.13.53.91.04.14.0-0.32.42.2-1.45.56.36.15.89.57.3-4.52.5-0.31.33.41.0-0.5-0.4-0.0-1.9-1.50.43.4-1.1-1.30.00.7-2.0-0.50.03.50.70.11.75.12.91.32.51.51.71.52.66.41.42.73.33.54.24.35.510.01.81.216.411.311.749.431.311.123.633.222.524.831.929.150.2-7.942.690.378.8-27.528.733.93.74.30.00.42.1-0.19.24.718.833.013.74.130.025.834.625.820.852.07.85.6

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Change From Baseline in BUN/Creatinine Ratio

Blood samples were collected from participants for evaluation of change from Baseline in clinical chemistry parameters including BUN/creatinine ratio. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionRatio of BUN to creatinine (Mean)
Visit 1 (Screening); n= 82Visit 2 (Week 13); n= 86Visit 3 (Week 26); n= 74Visit 4 (Week 39); n= 70Visit 5 (Week 52); n= 65Visit 6 (Week 69); n= 62Visit 7 (Week 86); n= 54Visit 8 (Week 104); n= 42Visit 9 (Week 121); n= 39Visit 10 (Week 138); n= 36Visit 11 (Week 156); n= 30Visit 12 (Week 173); n= 23Visit 13 (Week 190); n= 19Visit 14 (Week 208); n= 10Visit 15 (Week 225); n= 5Visit 16 (Week 242); n= 4Visit 17 (Week 260); n= 4Visit 18 (Week 277); n= 2Withdrawal visit; n= 78Follow up visit; n= 60
Retigabine IR0.33.82.71.01.9-0.02.5-2.50.60.2-6.2-5.71.1-0.8-8.84.02.03.04.20.4

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Change From Baseline in Calcium, Chloride, CO2, Glucose, Potassium, Magnesium, Sodium and BUN

Blood samples were collected from participants for evaluation of change from Baseline in clinical chemistry parameters including calcium, chloride, CO2, glucose, potassium, magnesium, sodium and BUN. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionMillimoles per liter (mmol/L) (Mean)
Calcium; visit 1 (Screening); n= 82Calcium; visit 2 (Week 13); n= 86Calcium; visit 3 (Week 26); n= 74Calcium; visit 4 (Week 39); n= 69Calcium; visit 5 (Week 52); n= 64Calcium; visit 6 (Week 69); n= 61Calcium; visit 7 (Week 86); n= 54Calcium; visit 8 (Week 104); n= 42Calcium; visit 9 (Week 121); n= 39Calcium; visit 10 (Week 138); n= 36Calcium; visit 11 (Week 156); n= 30Calcium; visit 12 (Week 173); n= 23Calcium; visit 13 (Week 190); n= 19Calcium; visit 14 (Week 208); n= 10Calcium; visit 15 (Week 225); n= 5Calcium; visit 16 (Week 242); n= 4Calcium; visit 17 (Week 260); n= 4Calcium; visit 18 (Week 277); n= 2Calcium; withdrawal visit; n= 78Calcium; follow up visit; n= 60Chloride; visit 1 (Screening); n= 83Chloride; visit 2 (Week 13); n= 87Chloride; visit 3 (Week 26); n=75Chloride; visit 4 (Week 39); n= 70Chloride; visit 5 (Week 52); n= 65Chloride; visit 6 (Week 69); n= 62Chloride; visit 7 (Week 86); n= 54Chloride; visit 8 (Week 104); n= 42Chloride; visit 9 (Week 121); n= 39Chloride; visit 10 (Week 138); n= 36Chloride; visit 11 (Week 156); n= 30Chloride; visit 12 (Week 173); n= 23Chloride; visit 13 (Week 190); n= 19Chloride; visit 14 (Week 208); n= 10Chloride; visit 15 (Week 225); n= 5Chloride; visit 16 (Week 242); n= 4Chloride; visit 17 (Week 260); n= 4Chloride; visit 18 (Week 277); n= 2Chloride; withdrawal visit; n= 79Chloride; follow up visit; n= 60CO2; visit 1 (Screening); n= 82CO2; visit 2 (Week 13); n= 86CO2; visit 3 (Week 26); n= 74CO2; visit 4 (Week 39); n= 69CO2; visit 5 (Week 52); n= 64CO2; visit 6 (Week 69); n= 61CO2; visit 7 (Week 86); n= 54CO2; visit 8 (Week 104); n= 42CO2; visit 9 (Week 121); n= 39CO2; visit 10 (Week 138); n= 36CO2; visit 11 (Week 156); n= 30CO2; visit 12 (Week 173); n= 23CO2; visit 13 (Week 190); n= 19CO2; visit 14 (Week 208); n= 10CO2; visit 15 (Week 225); n= 5CO2; visit 16 (Week 242); n= 4CO2; visit 17 (Week 260); n= 4CO2; visit 18 (Week 277); n= 2CO2; withdrawal visit; n= 78CO2; follow up visit; n= 60Glucose; visit 1 (Screening); n= 83Glucose; visit 2 (Week 13); n= 87Glucose; visit 3 (Week 26); n= 75Glucose; visit 4 (Week 39); n= 70Glucose; visit 5 (Week 52); n= 65Glucose; visit 6 (Week 69); n= 62Glucose; visit 7 (Week 86); n= 54Glucose; visit 8 (Week 104); n= 42Glucose; visit 9 (Week 121); n= 39Glucose; visit 10 (Week 138); n= 36Glucose; visit 11 (Week 156); n= 30Glucose; visit 12 (Week 173); n= 23Glucose; visit 13 (Week 190); n= 19Glucose; visit 14 (Week 208); n= 10Glucose; visit 15 (Week 225); n= 5Glucose; visit 16 (Week 242); n= 4Glucose; visit 17 (Week 260); n= 4Glucose; visit 18 (Week 277); n= 2Glucose; withdrawal visit; n= 79Glucose; follow up visit; n= 60Potassium; visit 1 (Screening); n= 82Potassium; visit 2 (Week 13); n= 86Potassium; visit 3 (Week 26); n= 74Potassium; visit 4 (Week 39); n= 69Potassium; visit 5 (Week 52); n= 64Potassium; visit 6 (Week 69); n= 61Potassium; visit 7 (Week 86); n= 54Potassium; visit 8 (Week 104); n= 42Potassium; visit 9 (Week 121); n= 39Potassium; visit 10 (Week 138); n= 36Potassium; visit 11 (Week 156); n= 30Potassium; visit 12 (Week 173); n= 23Potassium; visit 13 (Week 190); n= 19Potassium; visit 14 (Week 208); n= 10Potassium; visit 15 (Week 225); n= 5Potassium; visit 16 (Week 242); n= 4Potassium; visit 17 (Week 260); n= 4Potassium; visit 18 (Week 277); n= 2Potassium; withdrawal visit; n= 78Potassium; follow up visit; n= 60Magnesium; visit 1 (Screening); n= 83Magnesium; visit 2 (Week 13); n= 87Magnesium; visit 3 (Week 26); n= 75Magnesium; visit 4 (Week 39); n= 70Magnesium; visit 5 (Week 52); n= 65Magnesium; visit 6 (Week 69); n= 62Magnesium; visit 7 (Week 86); n= 54Magnesium; visit 8 (Week 104); n= 42Magnesium; visit 9 (Week 121); n= 39Magnesium; visit 10 (Week 138); n= 36Magnesium; visit 11 (Week 156); n= 30Magnesium; visit 12 (Week 173); n= 23Magnesium; visit 13 (Week 190); n= 19Magnesium; visit 14 (Week 208); n= 10Magnesium; visit 15 (Week 225); n= 5Magnesium; visit 16 (Week 242); n= 4Magnesium; visit 17 (Week 260); n= 4Magnesium; visit 18 (Week 277); n= 2Magnesium; withdrawal visit; n= 79Magnesium; follow up visit; n= 60Sodium; visit 1 (Screening); n= 83Sodium; visit 2 (Week 13); n= 80Sodium; visit 3 (Week 26); n= 69Sodium; visit 4 (Week 39); n= 64Sodium; visit 5 (Week 52); n= 59Sodium; visit 6 (Week 69); n= 58Sodium; visit 7 (Week 86); n= 51Sodium; visit 8 (Week 104); n= 39Sodium; visit 9 (Week 121); n= 36Sodium; visit 10 (Week 138); n= 35Sodium; visit 11 (Week 156); n= 28Sodium; visit 12 (Week 173); n= 21Sodium; visit 13 (Week 190); n= 17Sodium; visit 14 (Week 208); n= 10Sodium; visit 15 (Week 225); n= 5Sodium; visit 16 (Week 242); n= 4Sodium; visit 17 (Week 260); n= 4Sodium; visit 18 (Week 277); n= 2Sodium; withdrawal visit; n= 71Sodium; follow up visit; n= 53BUN; visit 1 (Screening); n= 83BUN; visit 2 (Week 13); n= 80BUN; visit 3 (Week 26); n= 69BUN; visit 4 (Week 39); n= 64BUN; visit 5 (Week 52); n= 59BUN; visit 6 (Week 69); n= 58BUN; visit 7 (Week 86); n= 51BUN; visit 8 (Week 104); n= 39BUN; visit 9 (Week 121); n= 36BUN; visit 10 (Week 138); n= 35BUN; visit 11 (Week 156); n= 28BUN; visit 12 (Week 173); n= 21BUN; visit 13 (Week 190); n= 17BUN; visit 14 (Week 208); n= 10BUN; visit 15 (Week 225); n= 5BUN; visit 16 (Week 242); n= 4BUN; visit 17 (Week 260); n= 4BUN; visit 18 (Week 277); n= 2BUN; withdrawal visit; n= 71BUN; follow up visit; n= 53
Retigabine IR-0.028-0.011-0.026-0.025-0.026-0.019-0.016-0.008-0.024-0.038-0.053-0.059-0.074-0.094-0.108-0.093-0.073-0.125-0.033-0.0500.50.40.11.51.20.41.51.31.41.22.01.62.41.21.22.03.5-0.50.6-0.0-0.20.30.5-0.2-0.2-0.5-0.6-0.6-1.0-0.9-1.0-0.9-1.5-3.6-2.4-1.0-0.5-0.5-0.0-0.80.200.160.170.400.230.250.210.210.310.300.10-0.030.210.150.381.95-0.10-0.300.140.39-0.04-0.07-0.09-0.11-0.13-0.21-0.13-0.05-0.09-0.07-0.16-0.13-0.02-0.160.140.300.250.10-0.04-0.20-0.017-0.012-0.007-0.004-0.008-0.012-0.0180.007-0.011-0.0070.005-0.003-0.000-0.0130.000-0.0080.0530.070-0.003-0.0070.20.2-0.20.70.5-0.20.60.90.70.30.90.70.6-1.2-0.4-0.80.8-1.00.2-0.70.320.440.310.220.370.130.220.220.350.18-0.06-0.400.23-0.11-0.400.801.100.500.490.14

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Change From Baseline in Direct Bilirubin, Total Bilirubin and Creatinine

Blood samples were collected from participants for evaluation of change from Baseline in clinical chemistry parameters including direct bilirubin, total bilirubin and creatinine. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionMicromole per liter (µmol/L) (Mean)
Direct bilirubin; visit 1 (Screening); n= 83Direct bilirubin; visit 2 (Week 13); n= 87Direct bilirubin; visit 3 (Week 26); n= 75Direct bilirubin; visit 4 (Week 39); n= 69Direct bilirubin; visit 5 (Week 52); n= 65Direct bilirubin; visit 6 (Week 69); n= 62Direct bilirubin; visit 7 (Week 86); n= 54Direct bilirubin; visit 8 (Week 104); n= 42Direct bilirubin; visit 9 (Week 121); n= 39Direct bilirubin; visit 10 (Week 138); n= 36Direct bilirubin; visit 11 (Week 156); n= 30Direct bilirubin; visit 12 (Week 173); n= 23Direct bilirubin; visit 13 (Week 190); n= 19Direct bilirubin; visit 14 (Week 208); n= 10Direct bilirubin; visit 15 (Week 225); n= 5Direct bilirubin; visit 16 (Week 242); n= 4Direct bilirubin; visit 17 (Week 260); n= 4Direct bilirubin; visit 18 (Week 277); n= 2Direct bilirubin; withdrawal visit; n= 79Direct bilirubin; follow up visit; n= 60Total bilirubin; visit 1 (Screening); n= 83Total bilirubin; visit 2 (Week 13); n= 87Total bilirubin; visit 3 (Week 26); n= 76Total bilirubin; visit 4 (Week 39); n= 70Total bilirubin; visit 5 (Week 52); n= 65Total bilirubin; visit 6 (Week 69); n= 62Total bilirubin; visit 7 (Week 86); n= 54Total bilirubin; visit 8 (Week 104); n= 42Total bilirubin; visit 9 (Week 121); n= 39Total bilirubin; visit 10 (Week 138); n= 36Total bilirubin; visit 11 (Week 156); n= 30Total bilirubin; visit 12 (Week 173); n= 23Total bilirubin; visit 13 (Week 190); n= 19Total bilirubin; visit 14 (Week 208); n= 10Total bilirubin; visit 15 (Week 225); n= 5Total bilirubin; visit 16 (Week 242); n= 4Total bilirubin; visit 17 (Week 260); n= 4Total bilirubin; visit 18 (Week 277); n= 2Total bilirubin; withdrawal visit; n= 79Total bilirubin; follow up visit; n= 60Creatinine; visit 1 (Screening); n= 82Creatinine; visit 2 (Week 13); n= 86Creatinine; visit 3 (Week 26); n= 74Creatinine; visit 4 (Week 39); n= 70Creatinine; visit 5 (Week 52); n= 65Creatinine; visit 6 (Week 69); n= 62Creatinine; visit 7 (Week 86); n= 54Creatinine; visit 8 (Week 104); n= 42Creatinine; visit 9 (Week 121); n= 39Creatinine; visit 10 (Week 138); n= 36Creatinine; visit 11 (Week 156); n= 30Creatinine; visit 12 (Week 173); n= 23Creatinine; visit 13 (Week 190); n= 19Creatinine; visit 14 (Week 208); n= 10Creatinine; visit 15 (Week 225); n= 5Creatinine; visit 16 (Week 242); n= 4Creatinine; visit 17 (Week 260); n= 4Creatinine; visit 18 (Week 277); n= 2Creatinine; withdrawal visit; n= 78Creatinine; follow up visit; n= 60
Retigabine IR0.1-0.1-0.2-0.10.0-0.0-0.2-0.0-0.2-0.10.0-0.10.10.0-0.2-0.5-0.50.50.0-0.22.51.81.82.12.61.81.41.81.11.60.50.60.20.30.81.3-0.31.51.2-0.83.680.420.651.821.401.250.554.783.672.105.33-0.931.67-1.742.085.809.233.450.880.16

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Change From Baseline in ECG Parameter Including PR Interval, QRS Duration, Uncorrected QT Interval, Corrected QT by Bazett's Formula (QTcB), Corrected QT by Fridericia's Formula (QTcF) and RR Interval

Single measurements of 12-lead ECG were obtained in supine position after at least 10 minutes of rest using an ECG machine to measure parameters including PR interval, QRS duration, uncorrected QT interval, QTcB, QTcF and RR interval. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionMilliseconds (msec) (Mean)
PR interval; Visit 1 (Screening); n= 86PR interval; Visit 2 (Week 13); n= 88PR interval; Visit 3 (Week 26); n= 78PR interval; Visit 4 (Week 39); n= 70PR interval; visit 5 (Week 52); n= 66PR interval; Visit 6 (Week 69); n= 62PR interval; Visit 7 (Week 86); n= 54PR interval; Visit 8 (Week 104); n= 42PR interval; Visit 9 (Week 121); n= 38PR interval; Visit 10 (Week 138); n= 37PR interval; Visit 11 (Week 156); n= 30PR interval; Visit 12 (Week 173); n= 24PR interval; Visit 13 (week 190); n= 19PR interval; Visit 14 (Week 208); n= 10PR interval; Visit 15 (Week 225); n= 5PR interval; Visit 16 (Week 242); n= 4PR interval; Visit 17 (Week 260); n= 4PR interval; Visit 18 (Week 277); n= 2PR interval; Withdrawal visit; n= 81PR interval; follow up visit; n= 57QRS duration; Visit 1 (Screening); n= 88QRS duration; Visit 2 (Week 13); n= 89QRS duration; Visit 3 (Week 26); n= 80QRS duration; Visit 4 (Week 39); n= 71QRS duration; Visit 5 (Week 52); n= 67QRS duration; Visit 6 (Week 69); n= 63QRS duration; Visit 7 (Week 86); n= 55QRS duration; Visit 8 (Week 104); n= 42QRS duration; Visit 9 (Week 121); n= 38QRS duration; Visit 10 (Week 138); n= 37QRS duration; Visit 11 (Week 156); n= 30QRS duration; Visit 12 (Week 173); n= 24QRS duration; Visit 13 (Week 190); n= 19QRS duration; Visit 14 (Week 208); n= 10QRS duration; Visit 15 (Week 225); n= 5QRS duration; Visit 16 (Week 242); n= 4QRS duration; Visit 17 (Week 260); n= 4QRS duration; Visit 18 (Week 277); n= 2QRS duration; withdrawal visit; n= 82QRS duration; follow up visit; n= 59Uncorrected QT interval;Visit 1 (Screening); n= 85Uncorrected QT interval; Visit 2 (Week 13); n= 88Uncorrected QT interval; Visit 3 (Week 26); n= 78Uncorrected QT interval; Visit 4 (Week 39); n= 69Uncorrected QT interval; Visit 5 (Week 52); n= 65Uncorrected QT interval; Visit 6 (Week 69); n= 61Uncorrected QT interval; Visit 7 (Week 86); n= 53Uncorrected QT interval; Visit 8 (Week 104); n= 41Uncorrected QT interval; Visit 9 (Week 121); n= 37Uncorrected QT interval; Visit 10 (Week 138);n= 36Uncorrected QT interval; Visit 11 (Week 156);n= 29Uncorrected QT interval; Visit 12 (Week 173);n= 23Uncorrected QT interval; Visit 13 (Week 190);n= 19Uncorrected QT interval; Visit 14 (Week 208);n= 10Uncorrected QT interval; Visit 15 (Week 225);n= 5Uncorrected QT interval; Visit 16 (Week 242);n= 4Uncorrected QT interval; Visit 17 (Week 260);n= 4Uncorrected QT interval; Visit 18 (Week 277);n= 2Uncorrected QT interval; withdrawal visit; n= 80Uncorrected QT interval; follow up visit; n= 56QTcB; Visit 1 (Screening); n= 85QTcB; Visit 2 (Week 13); n= 88QTcB; Visit 3 (Week 26); n= 78QTcB; Visit 4 (Week 39); n= 69QTcB; Visit 5 (Week 52); n= 65QTcB; Visit 6 (Week 69); n= 61QTcB; Visit 7 (Week 86); n= 53QTcB; Visit 8 (Week 104); n= 41QTcB; Visit 9 (Week 121); n= 37QTcB; Visit 10 (Week 138); n= 36QTcB; Visit 11 (Week 156); n= 29QTcB; Visit 12 (Week 173); n= 23QTcB; Visit 13 (Week 190); n= 19QTcB; Visit 14 (Week 208); n= 10QTcB; Visit 15 (Week 225); n= 5QTcB; Visit 16 (Week 242); n= 4QTcB; Visit 17 (Week 260); n= 4QTcB; Visit 18 (Week 277); n= 2QTcB; withdrawal visit; n= 80QTcB; follow up visit; n= 56QTcF; Visit 1 (Screening); n= 85QTcF; Visit 2 (Week 13); n= 88QTcF; Visit 3 (Week 26); n= 78QTcF; Visit 4 (Week 39); n= 69QTcF; Visit 5 (Week 52); n= 65QTcF; Visit 6 (Week 69); n= 61QTcF; Visit 7 (Week 86); n= 53QTcF; Visit 8 (Week 104); n= 41QTcF; Visit 9 (Week 121); n= 37QTcF; Visit 10 (Week 138); n= 36QTcF; Visit 11 (Week 156); n= 29QTcF; Visit 12 (Week 173); n= 23QTcF; Visit 13 (Week 190); n= 19QTcF; Visit 14 (Week 208); n= 10QTcF; Visit 15 (Week 225); n= 5QTcF; Visit 16 (Week 242); n= 4QTcF; Visit 17 (Week 260); n= 4QTcF; Visit 18 (Week 277); n= 2QTcF; withdrawal visit; n= 80QTcF; follow up visit; n= 56RR interval; visit 1 (Screening); n= 89RR interval; visit 2 (Week 13); n= 90RR interval; visit 3 (Week 26); n= 80RR interval; visit 4 (Week 39); n= 71RR interval; visit 5 (Week 52); n= 67RR interval; visit 6 (Week 69); n= 63RR interval; visit 7 (Week 86); n= 56RR interval; visit 8 (Week 104); n= 42RR interval; visit 9 (Week 121); n= 38RR interval; visit 10 (Week 138); n= 37RR interval; visit 11 (Week 156); n= 30RR interval; visit 12 (Week 173); n= 24RR interval; visit 13 (Week 190); n= 19RR interval; visit 14 (Week 208); n= 10RR interval; visit 15 (Week 225); n= 5RR interval; visit 16 (Week 242); n= 4RR interval; visit 17 (Week 260); n= 4RR interval; visit 18 (Week 277); n= 2RR interval; withdrawal visit; n= 83RR interval; follow up visit; n= 59
Retigabine IR2.41.33.21.2-0.21.3-0.73.1-1.11.2-0.54.8-2.17.88.4-3.09.3-5.53.63.7-0.10.21.11.10.91.9-0.40.1-0.7-2.0-3.3-1.3-4.9-6.1-2.9-5.9-7.8-4.5-2.50.010.14.97.99.36.67.4-1.66.0-0.5-8.7-4.94.7-1.9-17.0-1.53.117.5-3.55.22.75.03.24.06.05.86.84.32.54.9-2.8-0.34.23.9-1.6-1.9-9.8-2.04.5-0.7-1.06.83.75.47.16.17.12.33.73.0-4.8-1.84.61.9-7.0-1.6-5.45.32.01.30.327.912.220.522.410.36.2-18.523.7-17.5-19.6-16.012.9-19.5-70.7-2.856.683.5-30.029.115.9

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Change From Baseline in Electrocardiogram (ECG) Parameter Including HR

Single measurements of 12-lead ECG were obtained in supine position after at least 10 minutes of rest using an ECG machine to measure HR. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionBeats per minute (bpm) (Mean)
Visit 1 (Screening); n= 89Visit 2 (Week 13); n= 90Visit 3 (Week 26); n= 80Visit 4 (Week 39); n= 71Visit 5 (Week 52); n= 67Visit 6 (Week 69); n= 63Visit 7 (Week 86); n= 56Visit 8 (Week 104); n= 42Visit 9 (Week 121); n= 38Visit 10 (Week 138); n= 37Visit 11 (Week 156); n= 30Visit 12 (Week 173); n= 24Visit 13 (Week 190); n= 19Visit 14 (Week 208); n= 10Visit 15 (Week 225); n= 5Visit 16 (Week 242); n= 4Visit 17 (Week 260); n= 4Visit 18 (Week 277); n= 2Withdrawal visit; n= 83Follow up visit; n= 59
Retigabine IR-2.2-0.6-1.5-1.7-0.6-0.21.6-1.81.71.61.1-0.82.75.6-0.2-4.3-7.32.5-1.8-1.1

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Change From Baseline in Hematocrit Levels

Blood samples were collected from participants for evaluation of change from Baseline in clinical hematology parameters including hematocrit. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionProportion of red blood cells in blood (Mean)
Visit 1 (Screening); n= 85Visit 2 (Week 13); n= 89Visit 3 (Week 26); n= 74Visit 4 (Week 39); n= 69Visit 5 (Week 52); n= 64Visit 6 (Week 69); n= 62Visit 7 (Week 86); n= 55Visit 8 (Week 104); n= 41Visit 9 (Week 121); n= 36Visit 10 (Week 138); n= 36Visit 11 (Week 156); n= 31Visit 12 (Week 173); n= 24Visit 13 (Week 190); n= 18Visit 14 (Week 208); n= 10Visit 15 (Week 225); n= 4Visit 16 (Week 242); n= 4Visit 17 (Week 260); n= 4Visit 18 (Week 277); n= 2Withdrawal visit; n= 79Follow up visit; n= 59
Retigabine IR-0.0080-0.0087-0.0066-0.0030-0.0020-0.00200.00630.01030.00530.01290.00250.00700.00610.00150.0050-0.0097-0.0040-0.02700.00340.0039

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Change From Baseline in Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Levels

Blood samples were collected from participants for evaluation of change from Baseline in clinical hematology parameters including hemoglobin and MCHC. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionG/L (Mean)
Hemoglobin; visit 1 (Screening); n= 85Hemoglobin; visit 2 (Week 13); n= 89Hemoglobin; visit 3 (Week 26); n= 74Hemoglobin; visit 4 (Week 39); n= 69Hemoglobin; visit 5 (Week 52); n= 64Hemoglobin; visit 6 (Week 69); n= 62Hemoglobin; visit 7 (Week 86); n= 55Hemoglobin; visit 8 (Week 104); n= 41Hemoglobin; visit 9 (Week 121); n= 36Hemoglobin; visit 10 (Week 138); n= 36Hemoglobin; visit 11 (Week 156); n= 31Hemoglobin; visit 12 (Week 173); n= 24Hemoglobin; visit 13 (Week 190); n= 18Hemoglobin; visit 14 (Week 208); n= 10Hemoglobin; visit 15 (Week 225); n= 4Hemoglobin; visit 16 (Week 242); n= 4Hemoglobin; visit 17 (Week 260); n= 4Hemoglobin; visit 18 (Week 277); n= 2Hemoglobin; withdrawal visit; n= 79Hemoglobin; follow up visit; n= 59MCHC; visit 1 (Screening); n= 85MCHC; visit 2 (Week 13); n= 89MCHC; visit 3 (Week 26); n= 74MCHC; visit 4 (Week 39); n= 69MCHC; visit 5 (Week 52); n= 64MCHC; visit 6 (Week 69); n= 62MCHC; visit 7 (Week 86); n= 55MCHC; visit 8 (Week 104); n= 41MCHC; visit 9 (Week 121); n= 36MCHC; visit 10 (Week 138); n= 36MCHC; visit 11 (Week 156); n= 31MCHC; visit 12 (Week 173); n= 24MCHC; visit 13 (Week 190); n= 18MCHC; visit 14 (Week 208); n= 10MCHC; visit 15 (Week 225); n= 4MCHC; visit 16 (Week 242); n= 4MCHC; visit 17 (Week 260); n= 4MCHC; visit 18 (Week 277); n= 2MCHC; withdrawal visit; n= 79MCHC; follow up visit; n= 59
Retigabine IR-3.5-2.4-2.7-2.9-2.9-2.5-0.4-0.7-1.40.1-3.4-2.2-4.3-8.0-6.0-9.5-8.0-10.5-1.7-2.3-2.11.4-1.1-4.6-5.4-4.8-5.8-9.1-6.9-9.6-10.1-10.7-15.2-21.5-16.3-14.5-16.0-4.5-6.8-8.6

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Change From Baseline in Mean Corpuscle Hemoglobin (MCH) Levels

Blood samples were collected from participants for evaluation of change from Baseline in clinical hematology parameters including MCH. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionPicograms (Pg) (Mean)
Visit 1 (Screening); n= 85Visit 2 (Week 13); n= 89Visit 3 (Week 26); n= 74Visit 4 (Week 39); n= 69Visit 5 (Week 52); n= 64Visit 6 (Week 69); n= 62Visit 7 (Week 86); n= 55Visit 8 (Week 104); n= 41Visit 9 (Week 121); n= 36Visit 10 (Week 138); n= 36Visit 11 (Week 156); n= 31Visit 12 (Week 173); n= 24Visit 13 (Week 190); n= 18Visit 14 (Week 208); n= 10Visit 15 (Week 225); n= 4Visit 16 (Week 242); n= 4Visit 17 (Week 260); n= 4Visit 18 (Week 277); n= 2Withdrawal visit; n= 79Follow up visit; n= 59
Retigabine IR-0.17-0.33-0.47-0.83-0.77-0.91-0.99-1.17-1.11-1.28-1.44-1.78-1.90-2.19-2.00-2.50-1.83-2.65-1.11-1.08

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Change From Baseline in Mean Corpuscle Volume (MCV) and Mean Platelet Volume (MPV) Levels

Blood samples were collected from participants for evaluation of change from Baseline in clinical hematology parameters including MCV and MPV. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionFemtoliter (fL) (Mean)
MCV (Screening); Visit 1; n= 85MCV; Visit 2 (Week 13); n= 89MCV; Visit 3 (Week 26); n= 74MCV; Visit 4 (Week 39); n= 69MCV; Visit 5 (Week 52); n= 64MCV; Visit 6 (Week 69); n= 62MCV; Visit 7 (Week 86); n= 55MCV; Visit 8 (Week 104); n= 41MCV; Visit 9 (Week 121); n= 36MCV; Visit 10 (Week 138); n= 36MCV; Visit 11 (Week 156); n= 31MCV; Visit 12 (Week 173); n= 24MCV; Visit 13 (Week 190); n= 18MCV; Visit 14 (Week 208); n= 10MCV; Visit 15 (Week 225); n= 4MCV; Visit 16 (Week 242); n= 4MCV; Visit 17 (Week 260); n= 4MCV; Visit 18 (Week 277); n= 2MCV; Withdrawal visit; n= 79MCV; Follow up visit; n= 59MPV; visit 1 (Screening); n= 84MPV: visit 2 (Week 13); n= 86MPV: visit 3 (Week 26); n= 71MPV; visit 4 (Week 39); n= 67MPV; visit 5 (Week 52); n= 61MPV; visit 6 (Week 69); n= 58MPV; visit 7 (Week 86); n= 53MPV; visit 8 (Week 104); n= 38MPV: visit 9 (Week 121); n= 35MPV; visit 10 (Week 138); n= 34MPV; visit 11 (Week 156); n= 29MPV: visit 12 (Week 173); n= 24MPV; visit 13 (Week 190); n= 17MPV; visit 14 (Week 208); n= 10MPV; visit 15 (Week 225); n= 4MPV; visit 16 (Week 242); n= 4MPV; visit 17 (Week 260); n= 4MPV; visit 18 (Week 277); n= 2MPV; withdrawal visit; n= 78MPV; follow up visit; n= 57
Retigabine IR0.0-1.5-1.0-1.2-0.8-1.4-1.2-0.9-1.4-1.1-1.5-2.5-1.2-0.9-1.5-4.0-1.3-7.0-1.4-0.9-0.12-0.10-0.08-0.17-0.06-0.030.120.010.130.060.140.04-0.09-0.37-0.33-0.75-0.17-1.150.190.12

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Change From Baseline in Percent Basophils, Percent Eosinophils, Percent Lymphocytes, Percent Monocytes, Percent Neutrophils and RBC Distribution Width (RDW) Levels

Blood samples were collected from participants for evaluation of change from Baseline in clinical hematology parameters including percent basophils, eosinophils, lymphocytes, monocytes, neutrophils and RDW. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionPercent of blood components (Mean)
Percent basophils; visit 1 (Screening); n= 84Percent basophils; visit 2 (Week 13); n= 85Percent basophils; visit 3 (Week 26); n= 71Percent basophils; visit 4 (Week 39); n= 65Percent basophils; visit 5 (Week 52); n= 60Percent basophils; visit 6 (Week 69); n= 58Percent basophils; visit 7 (Week 86); n= 53Percent basophils; visit 8 (Week 104); n= 36Percent basophils; visit 9 (Week 121); n= 35Percent basophils; visit 10 (Week 138); n= 33Percent basophils; visit 11 (Week 156); n= 29Percent basophils; visit 12 (Week 173); n= 24Percent basophils; visit 13 (Week 190); n= 17Percent basophils; visit 14 (Week 208); n= 10Percent basophils; visit 15 (Week 225); n= 4Percent basophils; visit 16 (Week 242); n= 4Percent basophils; visit 17 (Week 260); n= 4Percent basophils; visit 18 (Week 277); n= 2Percent basophils; withdrawal visit; n= 78Percent basophils; follow up visit; n= 56Percent eosinophils; visit 1 (Screening); n= 84Percent eosinophils; visit 2 (Week 13); n= 85Percent eosinophils; visit 3 (Week 26); n= 71Percent eosinophils; visit 4 (Week 39); n= 65Percent eosinophils; visit 5 (Week 52); n= 60Percent eosinophils; visit 6 (Week 69); n= 58Percent eosinophils; visit 7 (Week 86); n= 53Percent eosinophils; visit 8 (Week 104); n= 36Percent eosinophils; visit 9 (Week 121); n= 35Percent eosinophils; visit 10 (Week 138); n= 33Percent eosinophils; visit 11 (Week 156); n= 29Percent eosinophils; visit 12 (Week 173); n= 24Percent eosinophils; visit 13 (Week 190); n= 17Percent eosinophils; visit 14 (Week 208); n= 10Percent eosinophils; visit 15 (Week 225); n= 4Percent eosinophils; visit 16 (Week 242); n= 4Percent eosinophils; visit 17 (Week 260); n= 4Percent eosinophils; visit 18 (Week 277); n= 2Percent eosinophils; withdrawal visit; n= 78Percent eosinophils; follow up visit; n= 56Percent lymphocytes; visit 1 (Screening); n= 84Percent lymphocytes; visit 2 (Week 13); n= 85Percent lymphocytes; visit 3 (Week 26); n= 71Percent lymphocytes; visit 4 (Week 39); n= 65Percent lymphocytes; visit 5 (Week 52); n= 60Percent lymphocytes; visit 6 (Week 69); n= 58Percent lymphocytes; visit 7 (Week 86); n= 53Percent lymphocytes; visit 8 (Week 104); n= 36Percent lymphocytes; visit 9 (Week 121); n= 35Percent lymphocytes; visit 10 (Week 138); n= 33Percent lymphocytes; visit 11 (Week 156); n= 29Percent lymphocytes; visit 12 (Week 173); n= 24Percent lymphocytes; visit 13 (Week 190); n= 17Percent lymphocytes; visit 14 (Week 208); n= 10Percent lymphocytes; visit 15 (Week 225); n= 4Percent lymphocytes; visit 16 (Week 242); n= 4Percent lymphocytes; visit 17 (Week 260); n= 4Percent lymphocytes; visit 18 (Week 277); n= 2Percent lymphocytes; withdrawal visit; n= 78Percent lymphocytes; follow up visit; n= 56Percent monocytes; visit 1 (Screening); n= 84Percent monocytes; visit 2 (Week 13); n= 85Percent monocytes; visit 3 (Week 26); n= 71Percent monocytes; visit 4 (Week 39); n= 65Percent monocytes; visit 5 (Week 52); n= 60Percent monocytes; visit 6 (Week 69); n= 58Percent monocytes; visit 7 (Week 86); n= 53Percent monocytes; visit 8 (Week 104); n= 36Percent monocytes; visit 9 (Week 121); n= 35Percent monocytes; visit 10 (Week 138); n= 33Percent monocytes; visit 11 (Week 156); n= 29Percent monocytes; visit 12 (Week 173); n= 24Percent monocytes; visit 13 (Week 190); n= 17Percent monocytes; visit 14 (Week 208); n= 10Percent monocytes; visit 15 (Week 225); n= 4Percent monocytes; visit 16 (Week 242); n= 4Percent monocytes; visit 17 (Week 260); n= 4Percent monocytes; visit 18 (Week 277); n= 2Percent monocytes; withdrawal visit; n= 78Percent monocytes; follow up visit; n= 56Percent neutrophils; visit 1 (Screening); n= 84Percent neutrophils; visit 2 (Week 13); n= 85Percent neutrophils; visit 3 (Week 26); n= 71Percent neutrophils; visit 4 (Week 39); n= 65Percent neutrophils; visit 5 (Week 52); n= 60Percent neutrophils; visit 6 (Week 69); n= 58Percent neutrophils; visit 7 (Week 86); n= 53Percent neutrophils; visit 8 (Week 104); n= 37Percent neutrophils; visit 9 (Week 121); n= 35Percent neutrophils; visit 10 (Week 138); n= 33Percent neutrophils; visit 11 (Week 156); n= 29Percent neutrophils; visit 12 (Week 173); n= 24Percent neutrophils; visit 13 (Week 190); n= 17Percent neutrophils; visit 14 (Week 208); n= 10Percent neutrophils; visit 15 (Week 225); n= 4Percent neutrophils; visit 16 (Week 242); n= 4Percent neutrophils; visit 17 (Week 260); n= 4Percent neutrophils; visit 18 (Week 277); n= 2Percent neutrophils; withdrawal visit; n= 78Percent neutrophils; follow up visit; n= 56RDW; visit 1 (Screening); n= 85RDW; visit 2 (Week 13); n= 89RDW; visit 3 (Week 26); n= 74RDW; visit 4 (Week 39); n= 69RDW; visit 5 (Week 52); n= 64RDW; visit 6 (Week 69); n= 62RDW; visit 7 (Week 86); n= 55RDW; visit 8 (Week 104); n= 41RDW; visit 9 (Week 121); n= 36RDW; visit 10 (Week 138); n= 36RDW; visit 11 (Week 156); n= 31RDW; visit 12 (Week 173); n= 24RDW; visit 13 (Week 190); n= 18RDW; visit 14 (Week 208); n= 10RDW; visit 15 (Week 225); n= 4RDW; visit 16 (Week 242); n= 4RDW; visit 17 (Week 260); n= 4RDW; visit 18 (Week 277); n= 2RDW; withdrawal visit; n= 79RDW; follow up visit; n= 59
Retigabine IR-0.00-0.06-0.030.070.04-0.02-0.020.11-0.06-0.02-0.00-0.06-0.01-0.030.000.030.030.250.01-0.13-0.06-0.00-0.29-0.44-0.77-0.26-0.30-0.04-0.47-0.92-0.79-0.70-1.38-2.49-1.53-0.430.001.65-0.83-1.30-2.21-0.40-1.140.27-2.58-1.26-0.530.69-2.27-3.91-4.52-3.19-4.73-3.72-6.58-3.88-5.85-8.10-2.60-0.81-0.330.270.860.76-0.010.640.940.04-0.110.15-0.27-0.44-1.43-0.711.081.252.034.200.48-0.352.600.190.60-0.663.310.90-0.09-0.812.914.705.584.397.556.957.033.033.802.002.942.580.41-0.070.050.470.350.050.050.32-0.190.220.940.410.881.980.283.952.502.050.100.27

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Change From Baseline in Post-Void Residual (PVR) Bladder Ultrasound Urine Volume

The PVR bladder ultrasound was used to assess urinary retention. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionMilliliter (mL) (Mean)
Visit 3 (Week 26); n= 77Visit 5 (Week 52); n= 64Visit 8 (Week 104); n= 40Visit 11 (Week 156); n= 25Visit 14 (Week 208); n= 10Visit 17 (Week 260); n= 4Withdrawal visit; n= 67
Retigabine IR-6.02.73.92.0-16.0-23.3-7.6

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Change From Baseline in RBC Count

Blood samples were collected from participants for evaluation of change from Baseline in clinical hematology parameters including RBC count. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Up to 5.8 years

InterventionTetra cells per liter (TI/L) (Mean)
Visit 1 (Screening); n= 85Visit 2 (Week 13); n= 89Visit 3 (Week 26); n= 74Visit 4 (Week 39); n= 69Visit 5 (Week 52); n= 64Visit 6 (Week 69); n= 62Visit 7 (Week 86); n= 55Visit 8 (Week 104); n= 41Visit 9 (Week 121); n= 36Visit 10 (Week 138); n= 36Visit 11 (Week 156); n= 31Visit 12 (Week 173); n= 24Visit 13 (Week 190); n= 18Visit 14 (Week 208); n= 10Visit 15 (Week 225); n= 4Visit 16 (Week 242); n= 4Visit 17 (Week 260); n= 4Visit 18 (Week 277); n= 2Withdrawal visit; n= 79Follow up visit; n= 59
Retigabine IR-0.10-0.03-0.030.010.000.040.120.140.110.190.090.180.120.050.130.100.000.050.100.07

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Change From Baseline in Urine Albumin Creatinine Ratio

Urine samples were collected from participants for evaluation of change from Baseline in urinalysis parameters including albumin creatinine ratio. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionMg of urine albumin/ mmol of creatinine (Mean)
Visit 1 (Screening); n= 39Visit 2 (Week 13); n= 72Visit 3 (Week 26); n= 54Visit 4 (Week 39); n= 53Visit 5 (Week 52); n= 52Visit 6 (Week 69); n= 46Visit 7 (Week 86); n= 47Visit 8 (Week 104); n= 32Visit 9 (Week 121); n= 30Visit 10 (Week 138); n= 26Visit 11 (Week 156); n= 22Visit 12 (Week 173); n= 19Visit 13 (Week 190); n= 10Visit 14 (Week 208); n= 8Visit 15 (Week 225); n= 4Visit 16 (Week 242); n= 3Visit 17 (Week 260); n= 3Visit 18 (Week 277); n= 2Withdrawal visit; n= 63Follow up visit; n= 48
Retigabine IR-0.57-0.070.15-0.64-0.69-0.530.07-0.75-0.89-1.05-0.65-1.81-0.59-1.700.13-0.33-0.33-0.50-0.35-0.62

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Change From Baseline in Urine Albumin Levels

Urine samples were collected from participants for evaluation of change from Baseline in urinalysis parameters including albumin levels. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionMilligrams per liter (mg/L) (Mean)
Visit 1 (Screening); n= 39Visit 2 (Week 13); n= 72Visit 3 (Week 26); n= 54Visit 4 (Week 39); n= 53Visit 5 (Week 52); n= 52Visit 6 (Week 69); n= 46Visit 7 (Week 86); n= 47Visit 8 (Week 104); n= 32Visit 9 (Week 121); n= 30Visit 10 (Week 138); n= 26Visit 11 (Week 156); n= 22Visit 12 (Week 173); n= 19Visit 13 (Week 190); n= 10Visit 14 (Week 208); n= 8Visit 15 (Week 225); n= 4Visit 16 (Week 242); n= 3Visit 17 (Week 260); n= 3Visit 18 (Week 277); n= 2Withdrawal visit; n= 63Follow up visit; n= 48
Retigabine IR-5.2-1.8-17.1-21.0-21.6-15.77.7-8.1-14.7-16.0-7.4-27.2-2.8-15.9-1.8-8.7-3.3-7.5-6.5-19.9

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Change From Baseline in Urine Creatinine Levels

Urine samples were collected from participants for evaluation of change from Baseline in urinalysis parameters including creatinine levels. Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

Interventionµmol/L (Mean)
Visit 1 (Screening); n= 52Visit 2 (Week 13); n= 89Visit 3 (Week 26); n= 75Visit 4 (Week 39); n= 66Visit 5 (Week 52); n= 63Visit 6 (Week 69); n= 59Visit 7 (Week 86); n= 55Visit 8 (Week 104); n= 42Visit 9 (Week 121); n= 37Visit 10 (Week 138); n= 35Visit 11 (Week 156); n= 30Visit 12 (Week 173); n= 23Visit 13 (Week 190); n= 19Visit 14 (Week 208); n= 10Visit 15 (Week 225); n= 5Visit 16 (Week 242); n= 4Visit 17 (Week 260); n= 4Visit 18 (Week 277); n= 2Withdrawal visit; n= 80Follow up visit; n= 60
Retigabine IR-2019.6-1846.2-3023.7-2849.6-1626.5-3534.2-2664.4-2645.1-1727.3-1712.6-1400.0-1008.3-3604.13238.3-675.0-5426.3148.8-7337.5-3570.3-515.8

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Changes From Baseline in American Urological Association Symptom Scale (AUA SS) Score

The effect of retigabine on bladder function was assessed using AUA symptom index. It is a 7-item Likert-scored scale ranging from 0 (no symptom at all) to 5 (almost always symptoms present) with a total possible score of 35. AUA SS score is the sum of the responses to these seven questions. The total score for all questions was classified as mild (0 to 7), moderate (8 to 19), or severe (>19). Baseline was defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionScore on AUA SS scale (Mean)
Visit 3 (Week 26); n= 82Visit 5 (Week 52); n= 68Visit 8 (Week 104); n= 42Visit 11 (Week 156); n= 31Visit 14 (Week 208); n= 10Visit 17 (Week 260); n= 4Withdrawal visit; n= 85
Retigabine IR-0.7-0.9-1.0-1.0-2.3-6.5-1.0

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Number of Participants Experiencing a 0 to <25, 25 to <50, 50 to <75 and 75 to 100 Percent Reduction in 28 Day POS Frequency From Baseline

The seizure frequency was recorded in daily seizure calendar by participants during the treatment period. Baseline assessments in this OLE study are defined by and taken directly from the Baseline assessments in the parent study NCT01336621. (NCT01336621)
Timeframe: Baseline and up to 5.8 years

InterventionParticipants (Number)
0 to <25 percent reduction25 to <50 percent reduction50 to <75 percent reduction75 to 100 percent reduction
Retigabine IR7132642

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Number of Participants Who Remained Seizure-free

The seizure frequency was recorded in daily seizure calendar by participants during the treatment period. Number of participants who were treated retigabine for at least 6 months and who remained seizure free for any 6 continuous months as well as number of participants who were treated with retigabine for at least 12 months and who remained seizure free for any 12 continuous months are presented. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Seizure free for 6 months; n= 85Seizure free for 12 months; n= 71
Retigabine IR2713

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Number of Participants With Abnormal Discoloration of Skin

Number of participants with Dermatologist-Confirmed abnormal discoloration of skin including skin around the eyes and eyelids, lips, nails, or mucosa were evaluated. Only abnormalities occurring on-treatment with retigabine were presented. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Any abnormal discolorationDiscoloration of skinDiscoloration of lipsDiscoloration of nailsDiscoloration of mucosa
Retigabine IR1153109

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Number of Participants With AEs and SAEs: All SFUCP Subjects

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is defined as any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability, is a congenital anomaly/ birth defect or is associated with liver injury or impaired liver function. The following AEs were collected in the SFUCP: AEs related to the finding(s) of pigmentation/, discoloration of the eye/skin, AEs related to unexplained vision loss, SAEs, Deaths and Pregnancies. SFUCP collected AEs are those for which onset was 31 days or more after the last dose of retigabine. The analysis was performed on the All SFUCP Subjects population which comprised of all subjects who enter the SFUCP. (NCT01336621)
Timeframe: Up to 2.6 years

InterventionParticipants (Number)
Any AEAny SAE
Retigabine IR in SFUCP31

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Number of Participants With Clinical Chemistry Parameters of PCC

Number of participants with chemistry parameters of PCC at 'any visit post-Baseline' are presented. Chemistry parameters for which PCC values were identified were alanine aminotransferase (ALT) (if value >=3 * upper limit of normal [ULN]), alkaline phosphatase (alk.phosphatase) (if value >=3*ULN), aspartate aminotransferase (AST) (if value >=3*ULN), calcium (if value <=1.8962 or >=2.8692), carbon-di-oxide (CO2) (if value <=18 or >=36), chloride (if value <=92 or >=112), creatine kinase (if value >=3*ULN), direct bilirubin (if value >=1.5*ULN), glucose (if value <=2.7755 or >=11.102), lactate dehydrogenase (LD) (if value >=3*ULN), magnesium (if value <0.36 or >2.50), potassium (if value <=3.0 or >=6.0), sodium (if value <=127 or >=153), total bilirubin (if value >=1.5*ULN), total protein (if value <45 or >100), blood urea nitrogen (BUN) (if value >=14.28). Only those participants with data available at specific time points were analyzed (represented by n=X in the category titles). (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
ALT; high; n= 98Alk.phosphatase; high; n= 98AST; high; n= 98Calcium; high; n= 98Calcium; low; n= 98CO2 content/bicarbonate; high; n= 98CO2 content/bicrbonate; low; n= 98Chloride; high; n= 98Chloride; low; n= 98Creatine kinase; high; n= 98Creatinine; high; n= 98Direct bilirubin; high; n= 98Glucose; high; n= 98Glucose; low; n= 98LD ; high; n= 98Magnesium; high; n= 98Magnesium; low; n= 98Potassium; high; n= 98Potassium; low; n= 98Sodium; high; n= 91Sodium; low; n= 91Total bilirubin; high; n= 98Total protein; high; n= 98Total protein; low; n= 98BUN; high; n= 91
Retigabine IR20100010626003110010021000

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Number of Participants With Hematology Parameters of PCC

Blood samples were collected from participants to evaluate hematology parameters. Number of participants with clinical hematology parameters of PCC at 'any visit post-Baseline' are presented. Hematology parameters for which PCC values were identified were eosinophils (if value is >0.8), hematocrit (if value is <=0.32 for males and <=0.28 for females), platelet count (if value is <=100 or >=550), total neutrophils (if value is <=1.8), white blood cells (WBC) (if value is <=2.8 or >=16). Only those participants with data available at specific time points were analyzed (represented by n=X in the category titles). (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Eosinophils; high; n= 98Hematocrit; low; n= 98Hemoglobin; low; n= 98Platelet count; high; n= 98Platelet count; low; n= 98Total neutrophils; low; n= 98WBC; high; n= 91WBC; low; n= 91
Retigabine IR743142023

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Number of Participants With Potential Clinical Concern (PCC) Values of Change From Baseline in Vital Signs and Weight

Vital signs including systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR) were measured after at least 5 minutes of rest. Body weight was measured without shoes and wearing light clothing. Baseline assessments in this OLE study were defined by and taken directly from the Baseline assessments in the parent study NCT01336621. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Increase or decrease of >=20 in SBP, increase or decrease of >=15 in DBP and HR were considered as PCC values. Number of participants with PCC values of vital signs for any visit post-Baseline are presented. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
DBP; decrease of >=15DBP; increase of >=15HR; decrease of >=15HR; increase of >=15SBP; decrease of >=20SBP; increase of >=20Weight; decrease of >=7 percentWeight; increase of >=7 percent
Retigabine IR15715181881032

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Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of Retigabine

The ophthalmologist/retina specialist determined the presence or absence of retinal and non-retinal ocular abnormalities. Retinal abnormalities included abnormalities in the macula and/or the peripheral retina and non-retinal ocular pigmentary abnormality. (NCT01336621)
Timeframe: Up to 2.6 years

InterventionParticipants (Number)
Retinal pigmentary abnormalityNon-retinal ocular pigmentary abnormality
Retigabine IR in SFUCP11

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Number of Participants With Suicidal Ideation or Behavior Assessed by the Columbia Suicide Severity Rating Scale (C-SSRS) Score

Number of participants with suicidal ideation or behavior during treatment were assessed using the C-SSRS score scale. It is a brief questionnaire designed to assess severity and change in suicidality by integrating both behavior and ideation using a semi-structured interview to probe participant responses. Participants are classified with respect to extent of suicidal ideation, extent of suicidal behavior, and with respect to self-injurious behavior. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Suicidal ideationSuicidal behaviorSelf-injurious behavior, no suicidal attempt
Retigabine IR100

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Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious AEs (TESAEs): Safety Population

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is defined as any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability, is a congenital anomaly/ birth defect or is associated with liver injury or impaired liver function. TEAE refers to an AE for which the onset was on or after the date of the first retigabine dose in this study and on or before 30 days after the last retigabine dose date. AEs that started in the parent study that increased in severity during this study were also considered treatment-emergent. The analysis was performed on Safety Population, which included participants who took at least one dose of study medication after they had enrolled into this OLE study. (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Any TEAEAny TESAE
Retigabine IR384

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Number of Participants With Urinalysis Parameters of PCC

Urine samples were collected from participants at specific time points. Number of participants with urinalysis parameters of PCC at 'any visit post-Baseline' are presented. Urinalysis parameters for which PCC values were identified were albumin/creatinine ratio (if value is >11.3), red blood cells (RBC) (if value is 3-5 or higher), WBC (if value is 5-10 or higher for male and 10-15 or higher for females), specific gravity (if value is <1.001 or >1.035) and potential of hydrogen (pH) (if value is <4.6 or >8.0). Only those participants with data available at specific time points were analyzed (represented by n=X in the category titles). (NCT01336621)
Timeframe: Up to 5.8 years

InterventionParticipants (Number)
Albumin/creatinine ratio; high; n= 96RBC; high; n= 98WBC; high; n= 91Specific gravity; high; n= 91Specific gravity; low; n= 91pH; high; n= 98pH; low; n= 98
Retigabine IR454594010

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Time From Discontinuation of Retigabine to Resolution of Abnormal Eye Pigmentation

Retinal pigmentary abnormality was determined by either an ophthalmologist or retina specialist. Retinal pigmentary abnormality included abnormality of macula, peripheral retina and unspecified location. If a participant had pigmentary abnormality of macula and pigmentary abnormality of the peripheral retina both should be resolved in order for retinal pigmentary abnormality to be considered resolved. If a participant had non-retinal ocular pigmentary abnormality in more than one location (conjunctiva, sclera, cornea, iris or lens), all should be resolved for non-retinal pigmentary abnormality to be considered resolved. (NCT01336621)
Timeframe: Up to 2.6 years

InterventionDays (Median)
Retinal Pigmentary AbnormalityNon-Retinal Ocular Pigmentary Abnormality
Retigabine IR in SFUCP157.0119.0

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Change From Baseline in Mean Corpuscle Volume at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

InterventionFemtoliters (FL) (Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg0.52
Regimen A: E/R 300/450 mg Then 600 mg0.45
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg1.00

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Change From Baseline in Calcium, Chloride, Carbon Dioxide Content/Bicarbonate, Glucose, Potassium, Sodium, Inorganic Phosphorus, and Urea/Blood Urea Nitrogen (BUN) at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

,,
InterventionMillimoles per liter (MMOL/L) (Mean)
Calcium, n=4, 4, 3Chloride, n=4, 4, 3Carbon dioxide content/bicarbonate, n=4, 4, 3Glucose, n=4, 4, 3Potassium, n=4, 4, 3Sodium, n=4, 4, 3Inorganic phosphorus, n=4, 3, 1Urea/BUN, n=4, 4, 3
Regimen A: E/R 300/450 mg Then 600 mg-0.043663.0-1.50.152650.172.0-0.043050.7140
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg0.024953.0-2.70.296050.202.30.096871.3090
Regimen A: Ezogabine/Retigabine (E/R) 300 mg0.006241.80.80.693880.081.8-0.39555-0.3570

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Change From Baseline in Direct Bilirubin, Total Bilirubin, Creatinine, and Uric Acid at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

,,
InterventionMicromoles per liter (UMOL/L) (Mean)
Direct bilirubin, n=1, 2, 1Total bilirubin, n=4, 4, 3Creatinine, n=4, 4, 3Uric acid, n=4, 3, 1
Regimen A: E/R 300/450 mg Then 600 mg2.73602.138-4.199015.8613
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg-0.85504.5600.589323.7920
Regimen A: Ezogabine/Retigabine (E/R) 300 mg2.73600.8551.326016.3570

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Number of Participants With the Indicated Urinalysis Parameter Dipstick Test Results From Screening to Follow-up

Urinalysis parameters analyzed included: urine occult blood (UOB), urine glucose (UG), urine ketones (UK), and urine protein (UP). The dipstick was a strip used to detect the presence or absence of these parameters in the urine sample. The dipstick test provides results in a semi-quantitative manner, and results can be read as negative (Neg), Trace, and 80, indicating proportional concentrations in the urine sample. Urinalysis parameters were assessed at Titration 1 (T1; 300 mg/day), Titration 2 (T2; 450 mg/day), Titration 3 (T3; 600 mg/day), Titration 4 (T4; 750 mg/day), and Titration 5 (T5; 900 mg/day). (NCT01494584)
Timeframe: Screening, Day 1 (D1), Day 7 (D7), Day 14 (D14), Day 21 (D21), Day 28 (D28), Day 35 (D35), and at the Follow-up Visit (up to Day 46)

,,,,
InterventionParticipants (Number)
UOB, T1, D1, 80, n=5, 0, 0, 0, 0UOB, T1, D1, Negative, n=5, 0, 0, 0, 0UOB, T1, D1, Trace, n=5, 0, 0, 0, 0UOB, T1, D7, 80, n=5, 0, 0, 0, 0UOB, T1, D7, Negative, n=5, 0, 0, 0, 0UOB, T1, D7, Trace, n=5, 0, 0, 0, 0UOB, T2, D7, 80, n=0, 5, 0, 0, 0UOB, T2, D7, Negative, n=0, 5, 0, 0, 0UOB, T2, D7, Trace, n=0, 5, 0, 0, 0UOB, T3, D7, 80, n=0, 0, 4, 0, 0UOB, T3, D7, Negative, n=0, 0, 4, 0, 0UOB, T3, D7, Trace, n=0, 0, 4, 0, 0UOB, T3, D14, 80, n=0, 0, 1, 0, 0UOB, T3,D14, Negative, n=0, 0, 1, 0, 0UOB, T3, D14, Trace, n=0, 0, 1, 0, 0Urine Occult Blood, T4, D7, 80, n=0,0,0,3,0UOB, T4, D7, Negative, n=0, 0, 0, 3, 0Urine Occult Blood, T4, D7, Trace, n=0,0,0,3,0UOB, T5, D7, 80, n=0, 0, 0, 0, 3UOB, T5, D7, Negative, n=0, 0, 0, 0, 3UOB, T5, D7, Trace, n=0, 0, 0, 0, 3UG, T1, D1, 80, n=5, 0, 0, 0, 0UG, T1, D1, Negative, n=5, 0, 0, 0, 0UG, T1, D1, Trace, n=5, 0, 0, 0, 0UG, T1, D7, 80, n=5, 0, 0, 0, 0UG, T1, D7, Negative, n=5, 0, 0, 0, 0UG, T1, D7, Trace, n=5, 0, 0, 0, 0UG, T2, D7, 80, n=0, 5, 0, 0, 0UG, T2, D7, Negative, n=0, 5, 0, 0, 0UG, T2, D7, Trace, n=0, 5, 0, 0, 0UG, T3, D7, 80, n=0, 0, 4, 0, 0UG, T3, D7, Negative, n=0, 0, 4, 0, 0UG, T3, D7, Trace, n=0, 0, 4, 0, 0UG, T3, D14, 80, n=0, 0,1,0,0UG, T3, D14, Negative, n=0, 0, 1, 0, 0UG, T3, D14, Trace, n=0, 0, 1, 0, 0UG, T4, D7, 80, n=0, 0, 0, 4, 0UG, T4, D7, Negative, n=0, 0, 0, 4, 0UG, T4, D7, Trace, n=0, 0, 0, 4, 0UG, T5, D7, 80, n=0, 0, 0, 0, 3UG, T5, D7, Negative, n=0, 0, 0, 0, 3UG, T5, D7, Trace, n=0, 0, 0, 0, 3UK, T1, D1, 80, n=5, 0, 0, 0, 0UK, T1, D1, Negative, n=5, 0, 0, 0, 0UK, T1, D1, Trace, n=5, 0, 0, 0, 0UK, T1, D7, 80, n=5, 0, 0, 0, 0UK, T1, D7, Negative, n=5, 0, 0, 0, 0UK, T1, D7, Trace, n=5, 0, 0, 0, 0UK, T2, D7, 80, n=0, 5, 0, 0, 0UK, T2, D7, Negative, n=0, 5, 0, 0, 0UK, T2, D7, Trace, n=0, 5, 0, 0, 0UK, T3, D7, 80, n=0, 0, 4, 0, 0UK, T3, D7, Negative, n=0, 0, 4, 0, 0UK, T3, D7, Trace, n=0, 0, 4, 0, 0UK, T3, D14, 80, n=0, 0, 1, 0, 0UK, T3, D14, Negative, n=0, 0, 1, 0, 0UK, T3, D14, Trace, n=0, 0, 1, 0, 0UK, T4, D7, 80, n=0, 0, 0, 4, 0UK, T4, D7, Negative, n=0, 0, 0, 4, 0UK, T4, D7, Trace, n=0, 0, 0, 4, 0UK, T5, D7, 80, n=0, 0, 0, 0, 3UK, T5, D7, Negative, n=0, 0, 0, 0, 3UK, T5, D7, Trace, n=0, 0, 0, 0, 3UP, T1, D1, 80, n=5, 0, 0, 0, 0UP, T1, D1, Negative, n=5, 0, 0, 0, 0UP, T1, D1, Trace, n=5, 0, 0, 0, 0UP, T1, D7, 80, n=5, 0, 0, 0, 0UP, T1, D7, Negative, n=5, 0, 0, 0, 0UP, T1, D7, Trace, n=5, 0, 0, 0, 0UP, T2, D7, 80, n=0, 5, 0, 0, 0UP, T2, D7, Negative, n=0, 5, 0, 0, 0UP, T2, D7, Trace, n=0, 5, 0, 0, 0UP, T3, D7, 80, n=0, 0, 4, 0,0UP, T3, D7, Negative, n=0, 0, 4, 0, 0UP, T3, D7, Trace, n=0, 0, 4, 0, 0UP, T3, D14, 80, n=0, 0, 1, 0, 0UP, T3, D14, Negative, n=0, 0, 1, 0, 0UP, T3, D14, Trace, n=0, 0, 1, 0, 0UP, T4, D7, 80, n=0, 0, 0, 4, 0UP, T4, D7, Negative, n=0, 0, 0, 4, 0UP, T4, D7, Trace, n=0, 0, 0, 4, 0UP, T5, D7, 80, n=0, 0, 0, 0, 3UP, T5, D7, Negative, n=0, 0, 0, 0, 3UP, T5, D7, Trace, n=0, 0, 0, 0, 3
Regimen A: Ezogabine/Retigabine 300 mg041041000000000000000050050000000000000000050050000000000000000041050000000000000000
Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg000000050000000000000000000050000000000000000000131000000000000000000041000000000000
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg000000000031010030000000000000040010000000000000000040010000000000000000031010000000
Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg000000000000000000000000000000000000040000000000000000000040000000000000000000040000
Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg000000000000000000021000000000000000000030000000000000000000030000000000000000000030

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Number of Participants With the Indicated Neurological Abnormality

Abnormal Central Nervous System (CNS) symptoms were assessed by a full and brief neurological examination. A full neurological examination included assessment of mental status, cranial nerves, gait, coordination, sensation, speech/language, muscle strength, muscle tone, and reflexes. A brief neurological examination included assessment of mental status, cranial nerves, gait, coordination, reflexes, and speech/language. Neurological parameters assessed were memory impairment, impaired intellect, decreased attention, psychomotor slowing, decreased muscle strength, hpertonia, somnolence, right and left bicpes, right and left brachioradialis, right and left knee, right and left ankle, and right and left planter response. Neurological examination was performed at Day 7 of Titration 3 (600 mg/day). (NCT01494584)
Timeframe: Screening and Day 7 of Titration 3 (Day 21)

InterventionParticipants (Number)
Memory impairmentImpaired intellectDecreased attentionPsychomotor slowingDecreased muscle strengthHypertoniaSomnolenceBicep rightBicep leftBrachioradialis rightBrachioradialis leftKnee rightKnee leftAnkle rightAnkle leftPlanter response rightPlanter response left
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg0000001NANANANANANANANANANA

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Number of Participants With Abnormal Electrocardiogram (ECG) Findings

An ECG machine that automatically calculates the heart rate and measures PR, QRS, QT, and QT interval corrected for heart rate (QTc intervals) was used. Measurements were taken 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 14 for up-titration to 450 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 28 for up-titration to 750 mg/day dose; Day 35 for up-titration to 900 mg/day dose). ECG parameters were assessed at Titration 1 (T1; 300 mg/day): Day 1 pre-dose, Day 1 at 3 hours (h), pre-dose, and 3 h post-dose. Titration 2 (T2; 450 mg/day): Day 7. Titration 3 (T3; 600 mg/day): pre-dose and 3 h post-dose. Titration 3 Dose Held (T3DH): pre-dose. Titration 4 (T4; 750 mg/day): Day 7. Titration 5 (T5; 900 mg/day): pre-dose and 3 h post-dose. The number of participants with abnormal (Abn) clinically significant (CS) and not clinically significant (NCS) ECG findings was recorded. The investigator determined if an ECG finding was CS or NCS. (NCT01494584)
Timeframe: Baseline (Screening) and Day 7 post up-titration, up to Day 35

,,,,
InterventionParticipants (Number)
T1, Day 1 pre-dose, Abn NCS, n=5, 0, 0, 0, 0T1, Day 1 pre-dose, Abn CS, n=5, 0, 0, 0, 0T1, Day 1, 3 h, Abn NCS, n=5, 0, 0, 0, 0T1, Day 1, 3 h, Abn CS, n=5, 0, 0, 0, 0T1, pre-dose, Abn NCS, n=5, 0, 0, 0, 0T1, pre-dose, Abn CS, n=5, 0, 0, 0, 0T1, 3 h, Abn NCS, n=5, 0, 0, 0, 0T1, 3 h, Abn CS, n=5, 0, 0, 0, 0T2, Day 7, Abn NCS, n=0, 5, 0, 0, 0T2, Day 7, Abn CS, n=0, 5, 0, 0, 0T3, pre-dose, Abn NCS, n=0, 0, 4, 0, 0T3, pre-dose, Abn CS, n=0, 0, 4, 0, 0T3, 3 h, Abn NCS, n=0, 0, 4, 0, 0T3, 3 h, Abn CS, n=0, 0, 4, 0, 0T3DH, pre-dose, Abn NCS, n=0, 0, 1, 0, 0T3DH, pre-dose, Abn CS, n=0, 0, 1, 0, 0T4, Day 7, Abn NCS, n=0, 0, 0, 4, 0T4, Day 7, Abn CS, n=0, 0, 0, 4, 0T5, pre-dose, Abn NCS, n=0, 0, 0, 0, 3T5, pre-dose, Abn CS, n=0, 0, 0, 0, 3T5, 3 h, Abn NCS, n=0, 0, 0, 0, 2T5, 3 h, Abn CS, n=0, 0, 0, 0, 2
Regimen A: Ezogabine/Retigabine 300 mg0000000000000000000000
Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg0000000010000000000000
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg0000000000000000000000
Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg0000000000000000000000
Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg0000000010000000001000

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Maximum Observed Concentration (Cmax) and Pre-dose (Trough) Concentration at the End of the Dosing Interval (Ctau) Following Oral Administration of Ezogabine/Retigabine

Cmax is defined as the first occurrence of the maximum observed plasma concentration. Ctau refers to the pre-dose (trough) concentration after the dosing interval which is equal to the minimum observed concentration (Cmin) at Steady State. Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to estimate Cmax and Ctau. (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

,,
InterventionNanograms/Milliliter (ng/mL) (Geometric Mean)
CmaxCtau
Regimen A: E/R 300/450 mg Then 600 mg535.9199.77
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg750.9287.48
Regimen A: Ezogabine/Retigabine (E/R) 300 mg370.0105.32

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Change From Baseline in Heart Rate (HR)

Vital sign assessment included heart rate measurement and was assessed at Titration 1 (T1; 300 mg/day): Day 1 pre-dose, Day 1 at 3 hours (h), pre-dose and 3 h post-dose. Titration 2 (T2; 450 mg/day): Day 7. Titration 3 (T3; 600 mg/day): pre-dose and 3 h post-dose. Titration 3 Dose Held (T3DH): pre-dose. Titration 4 (T4; 750 mg/day): Day 7. Titration 5 (T5; 900 mg/day): pre-dose and 3 h post-dose. Measurements were taken 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 14 for up-titration to 450 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 28 for up-titration to 750 mg/day dose; Day 35 for up-titration to 900 mg/day dose). Change from baseline was calculated by subtracting the baseline value from the individual post-dose values. Baseline is defined as as the Day 1 pre-dose value. (NCT01494584)
Timeframe: Baseline (Screening) and Day 7 post up-titration, up to Day 35

,,,,
InterventionBeats per Minute (BPM) (Mean)
HR, T1, Day 1 3h, n=5, 0, 0, 0, 0HR, T1, Pre-dose, n=5, 0, 0, 0, 0HR, T1, 3h, n=5, 0, 0, 0, 0HR, T2, Day 7, n=0, 5, 0, 0, 0HR, T3, Pre-dose, n=0, 0, 4, 0, 0HR, T3, 3h, n=0, 0, 4, 0, 0HR, T3DH, Pre-dose, n=0, 0, 1, 0, 0HR, T4, Day 7, n=0, 0, 0, 4, 0HR, T5, Pre-dose, n=0, 0, 0, 0, 3HR, T5, 3h, n=0, 0, 0, 0, 3
Regimen A: Ezogabine/Retigabine 300 mg3.6-0.82.8NANANANANANANA
Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mgNANANA8.2NANANANANANA
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mgNANANANA0.56.08.0NANANA
Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mgNANANANANANANA1.8NANA
Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mgNANANANANANANANA1.72.3

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Change From Baseline in Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at the Indicated Time Points

Vital sign assessment included the measurement of systolic and diastolic blood pressure at Titration 1 (T1; 300 mg/day): Day 1 pre-dose, Day 1 at 3 hours (h), Day 7 pre-dose, and 3 h post dose. Titration 2 (T2; 450 mg/day): Day 7. Titration 3 (T3; 600 mg/day): Day 21 pre-dose and 3 h post-dose. Titration 3 Dose Held (T3DH): pre-dose. Titration 4 (T4; 750 mg/day): Day 7. Titration 5 (T5; 900 mg/day): Day 35 pre-dose and 3 h post-dose. Measurements were taken 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 14 for up-titration to 450 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 28 for up-titration to 750 mg/day dose; Day 35 for up-titration to 900 mg/day dose). Change from baseline was calculated by subtracting the baseline value from the individual post-dose values. Baseline is defined as as the Day 1 pre-dose value. (NCT01494584)
Timeframe: Baseline (Screening) and Day 7 post up-titration, up to Day 35

,,,,
InterventionMillimeters of Mercury (mmHg) (Mean)
SBP, T1, Day 1 3h, n=5, 0, 0, 0, 0SBP, T1, Day 7 Pre-dose, n=5, 0, 0, 0, 0SBP, T1, Day 7 3h, n=5, 0, 0, 0, 0SBP, T2, Day 7, n=0, 5, 0, 0, 0SBP, T3, Day 21 Pre-dose, n=0, 0, 4, 0, 0SBP, T3, Day 21 3h, n=0, 0, 4, 0, 0SBP, T3DH, Pre-dose, n=0, 0, 1, 0, 0SBP, T4, Day 28, n=0, 0, 0, 4, 0SBP, T5, Day 35 Pre-dose, n=0, 0, 0, 0, 3SBP, T5, Day 35 3h, n=0, 0, 0, 0, 3DBP, T1, Day 1 3h, n=5, 0, 0, 0, 0DBP, T1, Pre-dose, n=5, 0, 0, 0, 0DBP, T1, 3h, n=5, 0, 0, 0, 0DBP, T2, Day 7, n=0, 5, 0, 0, 0DBP, T3, Pre-dose, n=0, 0, 4, 0, 0DBP, T3, 3h, n=0, 0, 4, 0, 0DBP, T3DH, Pre-dose, n=0, 0, 1, 0, 0DBP, T4, Day 7, n=0, 0, 0, 4, 0DBP, T5, Pre-dose, n=0, 0, 0, 0, 3DBP, T5, 3h, n=0, 0, 0, 0, 3
Regimen A: Ezogabine/Retigabine 300 mg2.82.6-1.2NANANANANANANA1.40.24.4NANANANANANANA
Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mgNANANA5.4NANANANANANANANANA-0.2NANANANANANA
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mgNANANANA11.33.013.0NANANANANANANA1.83.823.0NANANA
Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mgNANANANANANANA3.0NANANANANANANANANA-0.3NANA
Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mgNANANANANANANANA8.75.3NANANANANANANANA7.33.7

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Apparent Clearance (CL/F) Following Oral Administration of Ezogabine/Retigabine

Clearance (CL/F) is defined as dose/AUC(0-tau). Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to estimate CL/F. (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

InterventionLiters/Hour (Geometric Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg178.6
Regimen A: E/R 300/450 mg Then 600 mg234.5
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg237.9

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Apparent Volume of Distribution (Vd/F) Following Oral Administration of Ezogabine/Retigabine

The volume of distribution (Vd/F) is defined as MRT*CL/F, where MRT is the mean residence time (calculated as AUMC[0-tau]/AUC[0-tau], where AUMC[0-tau] is the area under the first moment curve determined as the area under the concentration*time versus time curve). Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to estimate the apparent volume of distribution. (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

InterventionLiters (Geometric Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg1130.9
Regimen A: E/R 300/450 mg Then 600 mg2118.0
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg1934.3

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Area Under the Concentration-time Curve From Time Zero (Pre-dose) to the Last Time of Quantifiable Concentration (AUC [0-t]) for the N-acetyl Metabolite of Ezogabine/Retigabine

The area under the curve was determined using the linear trapezoidal rule for increasing concentrations and the logarithmic trapezoidal rule for decreasing concentrations. Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to assess the plasma n-acetyl metabolite (NAMR) of ezogabine/retigabine following oral administration of ezogabine/retigabine. (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

Interventionh*ng/mL (Geometric Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg2222.1
Regimen A: E/R 300/450 mg Then 600 mg3479.2
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg5000.6

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Change From Baseline in Hematocrit at Day 7 Post Each Up-titration

"Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. The International System of Units (SI) Fraction of one unit (1) is reported here." (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

InterventionFraction of one unit (1) (Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg-0.0057
Regimen A: E/R 300/450 mg Then 600 mg-0.0303
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg0.0017

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Change From Baseline in Mean Corpuscle Hemoglobin at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

InterventionPicograms (PG) per cell (PG/cell) (Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg-0.07
Regimen A: E/R 300/450 mg Then 600 mg0.15
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg-0.23

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Change From Baseline in Hemoglobin and Mean Corpuscle Hemoglobin Concentration at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

,,
InterventionGrams per liter (G/L) (Mean)
Hemoglobin, n=4, 4, 3Mean corpuscle hemoglobin concentration, n=4, 4, 3
Regimen A: E/R 300/450 mg Then 600 mg-10.30.3
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg-2.0-6.7
Regimen A: Ezogabine/Retigabine (E/R) 300 mg-3.0-2.5

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Change From Baseline in Post Void Residual Ultrasound at Day 21

A post void residual (PVR) bladder ultrasound was carried out as a measure of bladder function. PVR was clinically indicated following the occurrence of adverse events relating to the lower urinary tract (e.g., micturition difficulties, including urinary hesitancy or urinary retention). These assessments were also repeated following drug withdrawal following such events. A prompt follow-up PVR was recommended if a high score was obtained from a participant on the Pediatric Lower Urinary Tract Symptom scale (the PLUTS scale is a clinician-rated scale used to assess lower urinary tract symptoms, including urinary retention) and if the clinician felt that the participant was at risk or had symptoms of urinary retention. PVR was measured at Day 7 of Titration 3 (600 mg/day). Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Screening and Day 7 of Titration 3 (Day 21)

InterventionML (Mean)
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg14.4

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Change From Baseline in Red Blood Cell Count at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

Intervention10^12 cells/L (TI/L) (Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg-0.090
Regimen A: E/R 300/450 mg Then 600 mg-0.357
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg-0.030

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Number of Participants With Any Adverse Event (AE)

An AE is defined as any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. (NCT01494584)
Timeframe: From the start of the first titration until follow-up (assessed up to 46 days)

InterventionParticipants (Number)
Regimen A: Ezogabine/Retigabine 300 mg1
Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg1
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg1
Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg0
Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg0

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Percent Change From Baseline in 28-day Seizure Frequency Rate

Participants or their caregivers recorded the number of seizures experienced by the participant, by seizure type (e.g., simple partial seizure [seizure that affects only a small region of the brain; consciousness is unaffected], complex partial seizure [seizure associated with unilateral cerebral hemisphere involvement and causing impairment of awareness or responsiveness], etc.), as well as by duration of episodes of innumerable seizure activity, in their daily diaries during all phases of this study. Percent change from baseline is defined as 100 * (rate in a given period minus the baseline rate) / (baseline rate). baseline seizures are defined as those seizures that occurred after Screening and before the start of the treatment. Post-baseline seizures are defined as those seizures that occurred from the start of the treatment until the start of Follow-up. Seizure frequency rate was computed as: 28 * (number of seizures during given period / number of days in given period). (NCT01494584)
Timeframe: Baseline (Screening) and until Follow-up or early discontinuation (assessed up to 46 days)

InterventionPercent change (Mean)
Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg-41.5

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Plasma Half Life at Steady State (t1/2) Following Oral Administration of Ezogabine/Retigabine

Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to assess plasma t1/2. Steady-state t1/2 is derived as (Vd/F) / (CL/F), where Vd/F is defined as the apparent volume of distribution after extravascular (e.g., oral) administration, and CL/F is defined as the apparent clearance following oral dosing. (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

InterventionHours (Geometric Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg4.168
Regimen A: E/R 300/450 mg Then 600 mg5.897
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg3.473

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Pre-dose (Trough) Concentration at the End of the Dosing Interval (Ctau) for the N-acetyl Metabolite of Ezogabine/Retigabine

Ctau refers to the pre-dose (trough) concentration at the end of the dosing interval which is equivalent to the minimum observed concetration (Cmin) at Steady State. Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to assess the Ctau for n-acetyl metabolite (NAMR) of ezogabine/retigabine following oral administration of ezogabine/retigabine. (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

Interventionng/mL (Geometric Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg170.51
Regimen A: E/R 300/450 mg Then 600 mg307.85
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg415.66

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The Area Under the Plasma Concentration-time Curve Over the Dosing Interval (AUC[0-tau]) Following Oral Administration of Ezogabine/Retigabine

The steady state pharmacokinetic profile following oral administration of ezogabine/retigabine included determining the area under the curve over the dosing interval (AUC[0-tau]). The area under the plasma concentration-time curve over the dosing interval (AUC[0-tau]) was determined using the linear trapezoidal rule for increasing concentrations and the logarithmic trapezoidal rule for decreasing concentrations. Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to estimate AUC(0-tau). (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

InterventionHour*Nanograms/Milliliter (h.ng/mL) (Geometric Mean)
Regimen A: Ezogabine/Retigabine (E/R) 300 mg1680.0
Regimen A: E/R 300/450 mg Then 600 mg2558.8
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg3783.8

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Time to Maximum Concentration (Tmax) Following Oral Administration of Ezogabine/Retigabine

Blood samples were collected at pre-dose and at 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35 to assess plasma Tmax. (NCT01494584)
Timeframe: Pre-dose and 0.5, 1, 1.5, 2, 4, 6, and 8 hours post-dose on Day 7, Day 21, and Day 35

InterventionHours (Median)
Regimen A: Ezogabine/Retigabine (E/R)300 mg1.000
Regimen A: E/R 300/450 mg Then 600 mg1.550
Regimen A: E/R 300/450/ 600/750 Then 900 mg2.000

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Change From Baseline in Albumin and Total Protein at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

,,
InterventionGrams per Liter (G/L) (Mean)
Albumin, n=4, 4, 3Total protein, n=4, 4, 3
Regimen A: E/R 300/450 mg Then 600 mg-3.0-3.5
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg-0.7-0.7
Regimen A: Ezogabine/Retigabine (E/R) 300 mg-3.8-4.0

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Change From Baseline in Alkaline Phosphatase, Alanine Amino Transferase, Aspartate Amino Transferase, and Gamma Glutamyl Transferase at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

,,
InterventionInternational Units per Liter (IU/L) (Mean)
Alkaline phosphatse, n=4, 4, 3Alanine amino transferase, n=4, 4, 3Aspartate amino transferase, n=4, 4, 3Gamma glutamyl transferase, n=3, 3, 2
Regimen A: E/R 300/450 mg Then 600 mg10.335.010.8111.0
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg5.0-1.01.750.5
Regimen A: Ezogabine/Retigabine (E/R) 300 mg-5.8-2.0-0.8-1.3

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Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Total Neutrophils (Total ANC [Total Absolute Neutrophil Count]), Platelet Count, and White Blood Cell Count at Day 7 Post Each Up-titration

Change from baseline was calculated 7 days after each up-titration (Day 7 for 300 mg/day dose; Day 21 for up-titration to 600 mg/day dose; Day 35 for up-titration to 900 mg/day dose) by subtracting the baseline value from the individual post-dose values. Baseline is defined as the Screening visit. (NCT01494584)
Timeframe: Baseline (Screening), Day 7, Day 21, and Day 35

,,
InterventionGiga (10^9) cells per liter (GI/L) (Mean)
Basophils, n=3, 3, 2Eosinophils, n=3, 3, 2Lymphocytes, n=3, 3, 2Monocytes, n=3, 3, 2Total neutrophils, n=3, 3, 2Platelet count, n=4, 4, 3White blood cell count, n=4, 4, 3
Regimen A: E/R 300/450 mg Then 600 mg0.040.09-0.450.09-0.11-15.8-0.600
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg0.000.10-0.650.050.61-1.3-0.583
Regimen A: Ezogabine/Retigabine (E/R) 300 mg0.030.0714.77-0.0414.90-17.00.393

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Change From Baseline in Maximum Flow Rate (Qmax) at Visit 5.

Maximum urine flow rate was measured by uroflowmetry test. It is a non-invasive diagnostic test that measures the speed of urinary flow. Uroflowmetry was assessed at Baseline visit 2 (Day -1) and on visits 3, 4 and 5 (Days 21, 35 and 49 respectively). Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value at Visit 5. Safety Population was defined as all participants who received more than or equal to one dose of study medication. (NCT01607346)
Timeframe: Baseline (Day -1) and on Day 49 (Visit 5)

InterventionMilliliter (mL) per second (Mean)
Ezogabine/Retigabine-1.49

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Frequency of Micturition as Recorded on the Voiding Diary for 2 Days Prior to Each Visit

The participants were asked to complete a voiding diary for two days preceding each visit. Frequency of micturition for 2 days prior to dach visit was defined as total number of entries recorded within 2 days prior to each post-baseline visit. Voiding diary was assessed at Baseline visit 2 (Day -1) and on visit 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionMicturition voided (Mean)
Visit 3, n=8Visit 4, n=8Visit 5, n=6Visit 6, n=9
Ezogabine/Retigabine8.19.49.79.7

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Percent Change From Baseline in Qmax at Visits 3, 4, 5 and 6

Maximum urine flow rate was measured by uroflowmetry test. It is a non-invasive diagnostic test that measures the speed of urinary flow. Uroflowmetry was assessed at Baseline visit 2 (Day -1) and on visits 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Measurement at visit 2 (Day -1) was considered as Baseline value. The percentage change from Baseline was calculated as post-baseline value minus Baseline value divided by Baseline value multiplied by 100. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles) (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionPercent change (Mean)
Visit 3, n=9Visit 4, n=8Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine-23.45-6.53-1.44-7.14

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Volume Voided as Recorded on the Voiding Diary for 2 Days Prior to Each Post-baseline Visit

The participants were asked to complete a voiding diary for two days preceding each visit. Volume voided for 2 days prior to each visit was defined as sum of urine recorded within 2 days prior to each post-baseline visit. Voiding diary was assessed at Baseline visit 2 (Day -1) and on visit 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionmL (Mean)
Visit 3, n=8Visit 4, n=8Visit 5, n=6Visit 6, n=9
Ezogabine/Retigabine2850.13558.13470.82736.1

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Change From Baseline in Flow Time at Visits 3, 4, 5 and 6

Flow time was measured by uroflowmetry test. It is a non-invasive diagnostic test that measures the speed of urinary flow. Uroflowmetry was assessed at Baseline visit 2 (Day -1) and on visit 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionSeconds (Mean)
Visit 3, n=9Visit 4, n=8Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine0.22-1.139.07-1.63

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Change From Baseline in American Urological Association Symptom Index (AUA SI) at Visits 3, 4, 5 and 6

The America Urological Association Symptom Index is a 7-item Likert-scored scale describing urinary bladder function. It is the sum of the responses to the 7 AUA symptom questions. Score ranges from 0 to 5 (0=not at all and 5=almost always for questions 1 to 6; 0=None and 5=five times or more for question 7). The total score ranges from 0-35 where higher scores indicate more severe symptoms. It was completed by the investigator at Baseline visit 2 (Day -1) and on visit 3 (Day 21), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionScores on a scale (Mean)
Visit 3, n=10Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine1.60.70.4

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Change From Baseline in Average Flow Rate (Qmean) at Visits 3, 4, 5 and 6

Average flow rate was measured by uroflowmetry test. It is a non-invasive diagnostic test that measures the speed of urinary flow. Uroflowmetry was assessed at Baseline visit 2 (Day -1) and on visit 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionmL per second (Mean)
Visit 3, n=9Visit 4, n=8Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine-1.97-2.80-1.04-2.62

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Change From Baseline in Maximum Flow Rate (Qmax) at Visits 3, 4 and 6

Maximum urine flow rate was measured by uroflowmetry test. It is a non-invasive diagnostic test that measures the speed of urinary flow. Uroflowmetry was assessed at Baseline visit 2 (Day -1) and on visits 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionmL per second (Mean)
Visit 3, n=9Visit 4, n=8Visit 6, n=10
Ezogabine/Retigabine-5.32-3.83-2.22

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Change From Baseline in Percentage Residual Urinary Volume (RUV) at Visits 3, 4, 5 and 6

Percentage residual urinary volume is a standardized measure of post-residual volume and is defined as residual devided by residual plus voided multiplied by 100 where 'residual' is the post-void residual (PVR) volume collected on the bladder ultrasound and 'voided' is the voided volume collected on the uroflowmetry. Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated as post-baseline minus Baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles) (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionPercentage of residual urinary volume (Mean)
Visit 3, n=9Visit 4, n=8Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine1.093.77-0.187.56

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Change From Baseline in PVR Volume by Bladder Ultrasound at Visits 3, 4, 5 and 6

PVR is the the amount of urine left in the bladder after urination. Bladder ultrasound was performed to assess PVR at Baseline/Visit 2 (Day -1), Visit 3 (Day 21), Visit 4 (Day 35), Visit 5 (Day 49) and Visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Up to Day 80 (Visit 6)

InterventionmL (Mean)
Visit 3, n=10Visit 4, n=8Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine-17.2-6.3-13.93.5

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Change From Baseline in Time to Maximum Flow at Visits 3, 4, 5 and 6

Time to maximum flow was measured by uroflowmetry test. It is a non-invasive diagnostic test that measures the speed of urinary flow. Uroflowmetry was assessed at Baseline visit 2 (Day -1) and on visits 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionSeconds (Mean)
Visit 3, n=9Visit 4, n=8Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine2.803.636.51-1.78

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Change From Baseline in Voided Volume (VV) at Visits 3, 4, 5 and 6

The volume of urine voided was measured by uroflowmetry test. Uroflowmetry was assessed at Baseline visit 2 (Day -1) and on visits 3 (Day 21), visit 4 (Day 35), visit 5 (Day 49) and visit 6 (follow-up visit within 14 days after the end-of-treatment eye examination). Measurement at visit 2 (Day -1) was considered as Baseline value. Change from Baseline was calculated by subtracting the Baseline value from the post-baseline value. Only those participants with data available at the specified time points were analyzed (represented by n=X in the category titles). (NCT01607346)
Timeframe: Baseline (Day -1) and up to Day 80 (Visit 6)

InterventionmL (Mean)
Visit 3, n=9Visit 4, n=8Visit 5, n=7Visit 6, n=10
Ezogabine/Retigabine-81.3-96.837.6-68.9

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Number of Participants Who Were Seizure Free During the MP, ITT Population

"A seizure free-day is defined as a day with non-missing seizure data but without any seizures. A participant was considered to be seizure free during the MP if he/she had no record of countable seizures of any type, no IS, and no SE during the MP. Participants who had one or more days on which they recorded seizures as Not Done on the seizure calendar were not disqualified from being considered as seizure free for that day. Participants who did not complete the study or experienced any seizures in the MP were not considered to be seizure free. A participant who completed the study AND had no seizures during the maintenance phase were counted to be seizure free. Also, a completer who only had seizures during the TiP is considered seizure free." (NCT01648101)
Timeframe: Baseline; Week 4 up to Week 16

InterventionParticipants (Number)
Placebo0
Retigabine 600 mg/Day0
Retigabine 900 mg/Day0

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Percentage of Seizure-free Days in the TrP

"The percentage of seizure-free days was calculated as: (total number of days without seizures in the TrP (TiP plus MP) / number of applicable days in the TrP) * 100. A seizure-free day is defined as a day with non-missing seizure data but without any seizures. A participant was considered to be seizure free during the TrP if he/she had no record of countable seizures of any type, no IS, and no SE during the TrP. Participants who had one or more days on which they recorded seizures as Not Done on the seizure calendar were not disqualified from being considered as seizure free for that day." (NCT01648101)
Timeframe: From Baseline up to Week 16

InterventionPercentage of seizure-free days (Mean)
Placebo62.1
Retigabine 600 mg/Day70.4
Retigabine 900 mg/Day64.9

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Number of Placebo and Retigabine 600 mg Responders During the MP

"A responder is defined as a participant experiencing a >=50% reduction in the 28-day total POS frequency from the BP to the MP, randomly assigned to retigabine 600 mg/day compared to placebo. The 28-day total POS frequency was calculated as: (total number of PS over the time period of interest [MP] / number of applicable days in that period) * 28. In a case of one or more occurrences of IS on a day, these seizures were to be counted as an additional 10 seizures for that day, regardless of whether the IS were PS or not, and regardless of the number of occurrences of IS on that day. The number of applicable days in a phase for seizure data is calculated as: the end date of the MP minus the start date of the MP minus days on which seizures were recorded as Not Done during the MP plus 1). Each occurrence of SE was counted as 1 seizure (whether partial status or not)." (NCT01648101)
Timeframe: Baseline; Week 4 up to Week 16

,
InterventionParticipants (Number)
RespondersNon-Responders
Placebo025
Retigabine 600 mg/Day818

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Number of Placebo and Retigabine 900 mg Responders During the Maintenance Phase (MP)

"A responder is defined as a par. with >=50% reduction in the 28 day total partial on-set seizure (POS) frequency from the Baseline Phase (BP) to the MP, randomly assigned to retigabine 900 mg/day compared with placebo. The total 28-day POS rate was defined as: (total number of POS over the evaluable period (MP) / number of days of seizure (sz) data in the evaluable period) *28 days. In the event of one or more innumerable seizures (IS) occurring on a day, these were to be counted as an additional 10 seizures for that day, regardless of the number of occurrences of IS on that day. The number of applicable days in a phase for seizure data is calculated as: the end date of MP minus start date of the MP minus days on which seizures were recorded as Not done + 1). Each occurrence of status epilepticus (SE) was counted as 1 seizure (whether partial or not)." (NCT01648101)
Timeframe: Baseline (BL); Week 4 up to Week 16

,
InterventionParticipants (Number)
RespondersNon-Responders
Placebo025
Retigabine 900 mg/Day420

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Percentage of Seizure-free Days in the MP

"The percentage of seizure-free days was calculated as: (total number of days without seizures in the MP / number of applicable days in the MP) * 100. A seizure-free day is defined as a day with non-missing seizure data but without any seizures. A participant was considered to be seizure free during the MP if he/she had no record of countable seizures of any type, no IS, and no SE during the MP. Participants who had one or more days on which they recorded seizures as Not Done on the seizure calendar were not disqualified from being considered as seizure free for that day." (NCT01648101)
Timeframe: From Week 4 up to Week 16

InterventionPercentage of seizure-free days (Mean)
Placebo61.7
Retigabine 600 mg/Day70.6
Retigabine 900 mg/Day63.3

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Number of Responders From the BP to the Treatment Phase (TrP)

"A responder is defined as a participant experiencing a >=50% reduction in the 28-day total POS frequency from the BP to the TrP (TiP plus MP). The 28-day total POS frequency was calculated as: (total number of PS over the time period of interest [TrP] / number of applicable days in that period) * 28. In a case of one or more occurrences of IS on a day, these seizures were to be counted as an additional 10 seizures for that day, regardless of whether the IS were PS or not, and regardless of the number of occurrences of IS on that day. The number of applicable days in a phase for seizure data is calculated as: the end date of the TrP minus the start date of the TrP minus days on which seizures were recorded as Not Done during the TrP plus 1). Each occurrence of SE was counted as 1 seizure (whether partial status or not)." (NCT01648101)
Timeframe: From Baseline up to Week 16

,,
InterventionParticipants (Number)
RespondersNon-Responders
Placebo124
Retigabine 600 mg/Day818
Retigabine 900 mg/Day618

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Percent Change From Baseline in the 28-day Total POS Frequency During the TrP

"The 28-day total POS frequency was calculated as: (total number of PS over the time period of interest [TrP; TiP plus MP] / number of applicable days in that period) * 28. In a case of one or more occurrences of IS on a day, these seizures were to be counted as an additional 10 seizures for that day, regardless of whether the IS were PS or not, and regardless of the number of occurrences of IS on that day. The number of applicable days in a phase for seizure data is calculated as: the end date of the TrP minus the start date of the TrP minus days on which seizures were recorded as Not Done during the TrP plus 1. Percent change from Baseline was calculated as: ([the 28-day PS rate for the period of interest (TrP) minus the Baseline 28-day PS rate] / Baseline 28-day PS rate) * 100. A negative percent change indicates a reduction (improvement) from Baseline; thus, the best possible outcome is -100% (100% reduction). There was no theoretical upper limit for worsening." (NCT01648101)
Timeframe: From Baseline up to Week 16

InterventionPercent change (Median)
Placebo-22.55
Retigabine 600 mg/Day-36.30
Retigabine 900 mg/Day-26.73

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Percent Change From Baseline in the 28-day Total POS Frequency During the MP

"The 28-day total POS frequency was calculated as: (total number of PS over the time period of interest [MP] / number of applicable days in that period) * 28. In a case of one or more occurrences of IS on a day, these seizures were to be counted as an additional 10 seizures for that day, regardless of whether the IS were PS or not, and regardless of the number of occurrences of IS on that day. The number of applicable days in a phase for seizure data is calculated as: the end date of the MP minus the start date of the MP minus days on which seizures were recorded as Not Done during the MP plus 1. Percent change from Baseline was calculated as: ([the 28-day PS rate for the period of interest (MP) minus the Baseline 28-day PS rate] / Baseline 28-day PS rate) * 100. A negative percent change indicates a reduction (improvement) from Baseline; thus, the best possible outcome is -100% (100% reduction). There was no theoretical upper limit for worsening." (NCT01648101)
Timeframe: Baseline; Week 4 up to Week 16

InterventionPercent change (Median)
Placebo-22.21
Retigabine 600 mg/Day-33.90
Retigabine 900 mg/Day-22.46

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Incidence of New Seizure Types During the TrP in Participants Without a History of the Indicated Seizure Types at Baseline

"A participant was considered to have new seizure types during the TrP if they experienced a new seizure types (such as SE, myoclonic, absence, secondary generalization) and had no prior history of these seizure types. At Screening, a history of previous seizure types was collected, with Yes, No, IS, SE, or Unknown being recorded for each of the seizures types. The history of seizure types was updated during the 8-week BP as pre-treatment status. New types of seizures during the TrP were recorded as A1=simple PS with motor signs; AX=simple PS without motor signs; B=complex PS; C=PS evolving to secondary generalized seizures; D1=absence of seizures; D2=myoclonic seizures; D3=clonic seizures; D4=tonic seizures; D5=tonic-clonic seizures; D6=atonic seizures; E=unclassified seizures; and SE=status epilepticus." (NCT01648101)
Timeframe: From Baseline up to Week 16

,,
InterventionNumber of events (Number)
Simple partial seizures (sz)with motor signsPartial sz evolving to secondary generalized szComplex partial seizuresSimple partial seizures without motor signsAbsence seizuresMyoclonic seizuresClonic seizuresTonic seizuresTonic-clonic seizuresAtonic seizuresUnclassified seizuresStatus Epilepticus
Placebo200000000000
Retigabine 600 mg/Day001000000000
Retigabine 900 mg/Day020000000000

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Number of Participants Who Were Seizure Free During the TrP

"A seizure free-day is defined as a day with non-missing seizure data but without any seizures. A participant was considered to be seizure free during the TrP if he/she had no record of countable seizures of any type, no IS, and no SE during the TrP. Participants who had one or more days on which they recorded seizures as Not Done on the seizure calendar were not disqualified from being considered as seizure free for that day. A participant was considered to be seizure free if they experienced no seizures in the TiP or MP regardless of how long they were in the study." (NCT01648101)
Timeframe: From Baseline up to Week 16

InterventionParticipants (Number)
Placebo0
Retigabine 600 mg/Day1
Retigabine 900 mg/Day2

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Number of Participants With Sexual Maturation Based on the Tanner Stage I to Stage V of Puberty in Participants <=18 Years Old Throughout the Study

The number of participants who advanced a stage between the eligibility visit and the EW Visit was recorded. Tanner stage I is defined as no pubic hair at all (prepubertal Dominic state); stage II is defined as a small amount of long, downy hair with slight pigmentation at the base of the penis and scrotum (males) or on the labia majora (females); stage III is defined as when the hair becomes more coarse and curly, and begins to extend laterally; stage IV is defined as adult-like hair quality, extending across pubis but sparing medial thighs; and stage V is defined as when the: hair extends to medial surface of the thighs. The investigator assessed the participant's sexual development in participants <18 years old based on the Tanner Stages of Puberty. (NCT01668654)
Timeframe: Eligibility Assessment (Visit 1) and EW Visit

InterventionParticipants (Number)
Stage I to Stage IIStage II to Stage IIIStage III to Stage IVStage IV to Stage VStage V
Retigabine/Ezogabine TID00022

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Number of Days of Exposure to Retigabine/Ezogabine TID by Individual Participant

Total number of days each participant was exposed to Retigabine/Ezogabine are recorded here. (NCT01668654)
Timeframe: Treatment Phase plus Taper Phase (up to 97 days)

InterventionDays (Number)
Participant 1Participant 2Participant 3Participant 4
Retigabine/Ezogabine TID133213196166

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Number of Participants With Vital Signs Outside the Pre-determined Clinically Important Findings or Outside the Normal Ranges at Any Time During the Study

Vital sign assessment included systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate and body temperature measurements. SBP, DBP and heart rate were measured at the following Visits: 1, 4, 5, 6, 7, EW and the FU Visit after the participants were in the seated position for 5 minutes. (NCT01668654)
Timeframe: Eligibility Assessment (Visit 1), Visit 4, Visit 5, Visit 6, Visit 7, Early Withdrawal (EW) Visit, and Follow-Up (FU) Visit (up to 178 days)

InterventionParticipants (Number)
Retigabine/Ezogabine TID0

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Number of Participants With Abnormal Clinically Significant ECG Findings Based on Investigator Judgment at Anytime During the Study

The 12-lead ECG was recorded in a supine position at the Eligibility Assessment Visit andthe EW Visit after having kept a participant at rest in this position for 10 minutes. Abnormal findings were analyzed as clinically significant (CS) and not clinically significant (NCS). The study investigator judged the ECG abnormailities as CS or NCS. (NCT01668654)
Timeframe: Eligibility Assessment and EW Visit

InterventionParticipants (Number)
Retigabine/Ezogabine TID0

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Number of Participants With AEs Leading to Withdrawal

An AE is defined as any untoward medical occurrence in a participant, temporally associated with the use of the study medication, whether or not considered related to the study medication. A SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability or incapacity, or is a congenital anomaly or birth defect. Medical or scientific judgment was exercised in deciding whether reporting was appropriate in other situations. Please refer to the AE/SAE module for a list of non-serious AEs and SAE. (NCT01668654)
Timeframe: From the start of study medication until the end of the Follow-Up Visit (up to 178 days)

InterventionParticipants (Number)
Retigabine/Ezogabine TID0

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Number of Participants (Par.) With Any Adverse Event (AE) or Serious Adverse Event (SAE) During the Treatment Period

An AE is defined as any untoward medical occurrence in a participant, temporally associated with the use of the study medication, whether or not considered related to the study medication. A SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability or incapacity, or is a congenital anomaly or birth defect. Medical or scientific judgment was exercised in deciding whether reporting was appropriate in other situations. Please refer to the AE/SAE module for a list of non-serious AEs and SAE. (NCT01668654)
Timeframe: From the start of study medication until the end of Follow-Up (up to 178 days)

InterventionParticipants (Number)
Any AEAny SAE
Retigabine/Ezogabine TID40

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Number of Participants With the Indicated Assessment Events of Suicidal Behavior, Suicidal Ideation or Non-suicidal Self Injurious Behavior Via the Columbia Suicide Severity Rating Scale (C-SSRS)

Prospective assessment of suicidality was conducted using the Columbia-Suicide Severity Rating Scale (C-SSRS), a brief questionnaire designed to assess severity and change in suicidality by integrating both behavior and ideation using a semi-structured interview to probe participant responses. C-SSRS data were only collected through Week 8 for the 6 randomized participants. Due to the study being prematurely terminated, there was not sufficient data to evaluate this endpoint. (NCT01721317)
Timeframe: Week 0 (end of Baseline Phase), Week 2 (end of Titration Phase), Week 4, Week 6 and Week 8

InterventionParticipants (Number)
Placebo0
Ezogabine/Retigabine IR0

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Number of Participants With Early Study Discontinuation

The safety and tolerability of ezogabine/retigabine IR was to be evaluated by recording the incidence of participants with early study discontinuation. (NCT01721317)
Timeframe: Week 0 (end of Baseline Phase) to Week 21 (end of Taper Phase)

InterventionParticipants (Number)
Placebo2
Ezogabine/Retigabine IR4

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Change From Baseline in Alanine Amino Transferase (ALT), Alkaline Phosphatase (Alk. Phosph.), Aspartate Aminotransferase (AST), Creatine Kinase (CK), Gamma Glutamyl Transferase (GGT) and Lactate Dehydrogenase (LD)

Blood samples collected from participants to evaluate change from Baseline in clinical chemistry parameters included ALT, Alk. phosph., AST,CK, GGT and LD. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionInternational unit per liter (IU/L) (Mean)
ALT; Visit 1-Day 1; n= 28ALT; Visit 2 - Month 1; n=27ALT; Visit 3 - Month 3; n=24ALT; Visit 4 - Month 6; n=19ALT; Visit 5 - Month 9; n=17ALT; Visit 6 - Month 12; n=15ALT; Visit 7 (Month 16); n=14ALT; Visit 8 (Month 20); n=12ALT; Visit 9 (Month 24); n=11ALT; Visit 10 (Month 28); n=10ALT; Visit 11 (Month 32); n=9ALT; Visit 12 (Month 36); n=4ALT; Study Conclusion/Withdrawal; n=27ALT ; Follow-Up Visit; n=4Alk. Phosph.; Visit 1-Day 1; n= 28Alk. Phosph; Visit 2 - Month 1; n=27Alk. Phosph; Visit 3 - Month 3; n=24Alk. Phosph; Visit 4 - Month 6; n=19Alk. Phosph; Visit 5 - Month 9; n=17Alk. Phosph; Visit 6 - Month 12; n=15Alk. Phosph; Visit 7 (Month 16); n=14Alk. Phosph; Visit 8 (Month 20); n=12Alk. Phosph; Visit 9 (Month 24); n=11Alk. Phosph; Visit 10 (Month 28); n=10Alk. Phosph; Visit 11 (Month 32); n=9Alk. Phosph; Visit 12 (Month 36); n=4Alk. Phosph; Study Conclusion/Withdrawal; n=27Alk. Phosph ; Follow-Up Visit; n=4AST; Visit 1-Day 1; n= 27AST; Visit 2 - Month 1; n=26AST; Visit 3 - Month 3; n=24AST; Visit 4 - Month 6; n=19AST; Visit 5 - Month 9; n=17AST; Visit 6 - Month 12; n=15AST; Visit 7 (Month 16); n=14AST; Visit 8 (Month 20); n=12AST; Visit 9 (Month 24); n=11AST; Visit 10 (Month 28); n=9AST; Visit 11 (Month 32); n=9AST; Visit 12 (Month 36); n=4AST; Study Conclusion/Withdrawal; n=27AST; Follow-Up Visit; n=4CK; Visit 1-Day 1; n= 28CK; Visit 2 - Month 1; n=27CK; Visit 3 - Month 3; n=24CK; Visit 4 - Month 6; n=19CK; Visit 5 - Month 9; n=17CK; Visit 6 - Month 12; n=15CK; Visit 7-(Month 16); n=14CK; Visit 8 -(Month 20); n=12CK; Visit 9 -(Month 24); n=11CK; Visit 10-(Month 28); n=10CK; Visit 11-(Month 32); n=9CK; Visit 12-(Month 36); n=4CK; Study Conclusion/Withdrawal; n=27CK; Follow-Up Visit; n=4GGT; Visit 1-Day 1; n= 28GGT; Visit 2 - Month 1; n=27GGT; Visit 3 - Month 3; n=24GGT; Visit 4 - Month 6; n=19GGT; Visit 5 - Month 9; n=17GGT; Visit 6 - Month 12; n=15GGT; Visit 7-(Month 16); n=14GGT; Visit 8 - (Month 20); n=12GGT; Visit 9 - (Month 24); n=11GGT; Visit 10-(Month 28); n=10GGT; Visit 11-(Month 32); n=9GGT; Visit 12-(Month 36); n=4GGT; StudyConclusion/Withdrawal; n=27GGT; Follow-Up Visit; n=4LD; Visit 1-Day 1; n=27LD; Visit 2 - Month 1; n=26LD; Visit 3 - Month 3; n=24LD; Visit 4 - Month 6; n=19LD; Visit 5 - Month 9; n=17LD; Visit 6 - Month 12; n=15LD; Visit 7-(Month 16); n=14LD; Visit 8 - (Month 20); n=12LD; Visit 9 - (Month 24); n=11LD; Visit 10-(Month 28); n=9LD; Visit 11-(Month 32); n=9LD; Visit 12-(Month 36); n=4LD; Study Conclusion/Withdrawal; n=27LD; Follow-Up Visit; n=4
RTG IR0.83.30.30.90.61.50.30.40.81.67.40.01.19.8-1.5-2.2-2.5-5.1-4.7-2.50.20.5-3.5-5.35.87.8-2.7-21.30.52.00.01.32.62.11.81.62.52.94.70.81.57.5-103.3-72.5-88.8-10.3-10.911.99.21.34.82.693.726.324.7261.04.64.2-4.5-2.7-2.5-4.7-3.6-13.1-6.08.324.310.02.1-3.8-1.40.81.7-8.51.9-1.61.3-0.512.28.318.88.52.62.5

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Change From Baseline in Albumin and Total Protein

Blood samples were collected from participants to evaluate change from Baseline in albumin and total protein. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionG/L (Mean)
Albumin; Visit 1-Day 1; n=28Albumin; Visit 2 - Month 1; n=27Albumin; Visit 3 - Month 3; n=24Albumin; Visit 4 - Month 6; n=19Albumin; Visit 5 - Month 9; n=17Albumin; Visit 6 - Month 12; n=15Albumin; Visit 7-(Month 16); n=14Albumin; Visit 8 - (Month 20); n=12Albumin; Visit 9 - (Month 24); n=11Albumin; Visit 10-(Month 28); n=10Albumin; Visit 11-(Month 32); n=9Albumin; Visit 12-(Month 36); n=4Albumin; Study Conclusion/Withdrawal; n=27Albumin; Follow-Up Visit; n=4Total protein; Visit 1-Day 1; n=28Total protein; Visit 2 - Month 1; n=27Total protein; Visit 3 - Month 3; n=24Total protein; Visit 4 - Month 6; n=19Total protein; Visit 5 - Month 9; n=17Total protein; Visit 6 - Month 12; n=15Total protein; Visit 7-(Month 16); n=14Total protein; Visit 8 - (Month 20); n=12Total protein; Visit 9 - (Month 24); n=11Total protein; Visit 10-(Month 28); n=10Total protein; Visit 11-(Month 32); n=9Total protein; Visit 12-(Month 36); n=4Total protein; Study Conclusion/Withdrawal; n=27Total protein; Follow-Up Visit; n=4
RTG IR-0.9-0.3-0.30.1-0.3-1.1-0.7-0.6-0.3-0.21.2-0.3-0.6-0.3-0.7-0.70.10.5-0.4-0.30.61.32.42.53.81.80.70.5

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Number of Participants Who Discontinued From RTG

The number of participants who discontinued from RTG treatment has been presented. (NCT01777139)
Timeframe: Up to 4 years

InterventionParticipants (Count of Participants)
Day 0Day 3Day 17Day 62Day 66Day 98Day 111Day 126Day 163Day 168Day 169Day 229Day 240Day 287Day 339Day 413Day 498Day 559Day 650Day 781Day 852Day 927Day 930Day 943Day 1007Day 1008Day 1098Day 1169Day 1233
RTG IR01111111121111111111110011000

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Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Platelet Count, Total Neutrophils, and White Blood Cell Count (WBC)

Blood samples were collected from participants for evaluation of change from Baseline in hematology parameters including basophils, eosinophils, lymphocytes,monocytes, platelet count, total neutrophils, and WBC. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and standard deviation (SD) were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionGiga unit per liter (GI/L) (Mean)
Basophils;Visit 1-Day 1;n=29Basophils;Visit 2 - Month 1;n=28Basophils;Visit 3 - Month 3;n=26Basophils;Visit 4 - Month 6;n=16Basophils;Visit 5 - Month 9;n=16Basophils;Visit 6 - Month 12;n=13Basophils;Visit 7 (Month 16);n=12Basophils;Visit 8 (Month 20);n=11Basophils;Visit 9 (Month 24);n=10Basophils;Visit 10 (Month 28);n=10Basophils;Visit 11 (Month 32);n=9Basophils;Visit 12 (Month 36);n=4Basophils;Study Conclusion/Withdrawal;n=28Basophils;Follow-Up Visit;n=5Eosinophils;Visit 1-Day 1; n=29Eosinophils; Visit 2 - Month 1; n=28Eosinophils; Visit 3 - Month 3; n=26Eosinophils; Visit 4 - Month 6; n=16Eosinophils; Visit 5 - Month 9; n=16Eosinophils; Visit 6 - Month 12; n=13Eosinophils; Visit 7 (Month 16); n=12Eosinophils; Visit 8 (Month 20); n=11Eosinophils; Visit 9 (Month 24); n=10Eosinophils; Visit 10 (Month 28); n=10Eosinophils; Visit 11 (Month 32); n=9Eosinophils; Visit 12 (Month 36); n=4Eosinophils; Study Conclusion/Withdrawal; n=28Eosinophils; Follow-Up Visit; n=5Lymphocytes; Visit 1-Day 1; n= 29Lymphocytes; Visit 2 - Month 1; n=28Lymphocytes; Visit 3 - Month 3; n=26Lymphocytes; Visit 4 - Month 6; n=16Lymphocytes; Visit 5 - Month 9; n=16Lymphocytes; Visit 6 - Month 12; n= 13Lymphocytes; Visit 7 (Month 16); n=12Lymphocytes; Visit 8 (Month 20); n=11Lymphocytes; Visit 9 (Month 24); n=10Lymphocytes; Visit 10 (Month 28); n=10Lymphocytes; Visit 11 (Month 32); n=9Lymphocytes; Visit 12 (Month 36); n=4Lymphocytes; Study Conclusion/Withdrawal; n=28Lymphocytes; Follow-Up Visit; n=5Monocytes; Visit 1-Day 1; n= 29Monocytes; Visit 2 - Month 1; n=28Monocytes; Visit 3 - Month 3; n=26Monocytes; Visit 4 - Month 6; n=16Monocytes; Visit 5 - Month 9; n=16Monocytes; Visit 6 - Month 12; n= 13Monocytes; Visit 7 (Month 16); n=12Monocytes; Visit 8 (Month 20); n=11Monocytes; Visit 9 (Month 24); n=10Monocytes; Visit 10 (Month 28); n=10Monocytes; Visit 11 (Month 32); n=9Monocytes; Visit 12 (Month 36); n=4Monocytes; Study Conclusion/Withdrawal; n=28Monocytes; Follow-Up Visit; n=5Platelet count; Visit 1-Day 1; n=28Platelet count; Visit 2 - Month 1; n=28Platelet count; Visit 3 - Month 3; n=25Platelet count; Visit 4 - Month 6; n=18Platelet count; Visit 5 - Month 9; n=17Platelet count; Visit 6 - Month 12; n=15Platelet count; Visit 7 (Month 16); n=14Platelet count; Visit 8 (Month 20); n=11Platelet count; Visit 9 (Month 24); n=11Platelet count; Visit 10 (Month 28); n=10Platelet count; Visit 11 (Month 32); n=9Platelet count; Visit 12 (Month 36); n=4Platelet count; Study Conclusion/Withdrawal; n=28Platelet count; Follow-Up Visit; n=5Total Neutrophils; Visit 1-Day 1; n=30Total Neutrophils; Visit 2 - Month 1; n=28Total Neutrophils; Visit 3 - Month 3; n=26Total Neutrophils; Visit 4 - Month 6; n=16Total Neutrophils; Visit 5 - Month 9; n=16Total Neutrophils; Visit 6 - Month 12; n=13Total Neutrophils; Visit 7 (Month 16); n=12Total Neutrophils; Visit 8 (Month 20); n=11Total Neutrophils; Visit 9 (Month 24); n=10Total Neutrophils; Visit 10 (Month 28); n=10Total Neutrophils; Visit 11 (Month 32); n=9Total Neutrophils; Visit 12 (Month 36); n=4Total Neutrophils;Study Conclusion/Withdrawal;n=28Total Neutrophils; Follow-Up Visit; n=5WBC ; Visit 1-Day 1; n=30WBC ; Visit 2 - Month 1; n=28WBC; Visit 3 - Month 3; n=26WBC; Visit 4 - Month 6; n=18WBC; Visit 5 - Month 9; n=17WBC; Visit 6 - Month 12; n=15WBC ; Visit 7 (Month 16); n=14WBC ; Visit 8 (Month 20); n=12WBC ; Visit 9 (Month 24); n=11WBC; Visit 10 (Month 28); n=10WBC; Visit 11 (Month 32); n=9WBC; Visit 12 (Month 36); n=4WBC; Study Conclusion/Withdrawal;n=28WBC; Follow-Up Visit; n=5
RTG IR0.0000.0000.000-0.0030.0010.003-0.0020.0030.0000.0020.0040.005-0.003-0.008-0.012-0.051-0.070-0.0040.038-0.0140.0100.008-0.0510.0060.011-0.025-0.026-0.078-0.132-0.065-0.1200.024-0.032-0.1090.007-0.0370.0520.1080.022-0.268-0.068-0.070-0.018-0.028-0.0440.033-0.0420.076-0.0210.129-0.021-0.0220.0880.0350.0140.0548.36.314.55.86.010.218.516.615.520.317.128.517.0-2.0-0.099-0.0280.369-0.318-0.1580.1820.2520.3250.6560.2381.3100.3100.086-0.176-0.15-0.160.14-0.42-0.120.340.200.530.640.331.430.080.01-0.28

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Change From Baseline in Blood Urea Nitrogen (BUN)/Creatinine Ratio

Blood samples were collected from participants to evaluate change from Baseline in BUN/creatinine. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionRatio (Mean)
Visit 1-Day 1; n=28Visit 2 - Month 1; n=27Visit 3 - Month 3; n=24Visit 4 - Month 6; n=19Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7-(Month 16); n=14Visit 8 - (Month 20); n=12Visit 9 - (Month 24); n=11Visit 10-(Month 28); n=10Visit 11-(Month 32); n=9Visit 12-(Month 36); n=4Study Conclusion/Withdrawal; n=27Follow-Up Visit; n=4
RTG IR4.26.27.07.018.115.54.212.87.01.913.830.03.11.0

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Change From Baseline in Calcium, Carbon Dioxide (CO2) Content/Bicarbonate (Bicarb), Chloride, Glucose, Magnesium, Potassium, Sodium, Urea/BUN

Blood samples were collected from participants to evaluate change from Baseline in calcium, CO2 content/Bicarb, chloride, glucose, magnesium, potassium, sodium, and urea/BUN. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionMillimoles per liter (mmol/L) (Mean)
Calcium; Visit 1-Day 1; n=27Calcium; Visit 2 - Month 1; n=26Calcium; Visit 3 - Month 3; n=24Calcium; Visit 4 - Month 6; n=19Calcium; Visit 5 - Month 9; n=17Calcium; Visit 6 - Month 12; n=15Calcium; Visit 7-(Month 16); n=14Calcium; Visit 8 - (Month 20); n=12Calcium; Visit 9 - (Month 24); n=11Calcium; Visit 10-(Month 28); n=9Calcium; Visit 11-(Month 32); n=9Calcium; Visit 12-(Month 36); n=4Calcium; StudyConclusion/Withdrawal; n=27Calcium; Follow-Up Visit; n=4CO2 content/Bicarb; Visit 1-Day 1; n=27CO2 content/Bicarb; Visit 2 - Month 1; n=26CO2 content/Bicarb; Visit 3 - Month 3; n=24CO2 content/Bicarb; Visit 4 - Month 6; n=19CO2 content/Bicarb; Visit 5 - Month 9; n=17CO2 content/Bicarb; Visit 6 - Month 12; n=15CO2 content/Bicarb; Visit 7-(Month 16); n=14CO2 content/Bicarb; Visit 8 - (Month 20); n=12CO2 content/Bicarb; Visit 9 - (Month 24); n=11CO2 content/Bicarb; Visit 10-(Month 28); n=9CO2 content/Bicarb; Visit 11-(Month 32); n=9CO2 content/Bicarb; Visit 12-(Month 36); n=4CO2content/Bicarb;Study Conclusion/Withdrawal;n=27CO2 content/Bicarb; Follow-Up Visit; n=4Chloride; Visit 1-Day 1; n=28Chloride; Visit 2 - Month 1; n=27Chloride; Visit 3 - Month 3; n=24Chloride; Visit 4 - Month 6; n=19Chloride; Visit 5 - Month 9; n=17Chloride; Visit 6 - Month 12; n=15Chloride; Visit 7-(Month 16); n=14Chloride; Visit 8 - (Month 20); n=12Chloride; Visit 9 - (Month 24); n=11Chloride; Visit 10-(Month 28); n=10Chloride; Visit 11-(Month 32); n=9Chloride; Visit 12-(Month 36); n=4Chloride; StudyConclusion/Withdrawal;n=27Chloride; Follow-Up Visit; n=4Glucose; Visit 1-Day 1; n=28Glucose; Visit 2 - Month 1; n=27Glucose; Visit 3 - Month 3; n=24Glucose; Visit 4 - Month 6; n=19Glucose; Visit 5 - Month 9; n=17Glucose; Visit 6 - Month 12; n=15Glucose; Visit 7-(Month 16); n=14Glucose; Visit 8 - (Month 20); n=12Glucose; Visit 9 - (Month 24); n=11Glucose; Visit 10-(Month 28); n=10Glucose; Visit 11-(Month 32); n=9Glucose; Visit 12-(Month 36); n=4Glucose; StudyConclusion/Withdrawal;n=27Glucose; Follow-Up Visit; n=4Magnesium; Visit 1-Day 1; n=28Magnesium; Visit 2 - Month 1; n=27Magnesium; Visit 3 - Month 3; n=24Magnesium; Visit 4 - Month 6; n=19Magnesium; Visit 5 - Month 9; n=17Magnesium; Visit 6 - Month 12; n=15Magnesium; Visit 7-(Month 16); n=14Magnesium; Visit 8 - (Month 20); n=12Magnesium; Visit 9 - (Month 24); n=11Magnesium; Visit 10-(Month 28); n=10Magnesium; Visit 11-(Month 32); n=9Magnesium; Visit 12-(Month 36); n=4Magnesium; Study Conclusion/Withdrawal;n=27Magnesium; Follow-Up Visit; n=4Potassium; Visit 1-Day 1; n=27Potassium; Visit 2 - Month 1; n=26Potassium; Visit 3 - Month 3; n=24Potassium; Visit 4 - Month 6; n=19Potassium; Visit 5 - Month 9; n=17Potassium; Visit 6 - Month 12; n=15Potassium; Visit 7-(Month 16); n=14Potassium; Visit 8 - (Month 20); n=12Potassium; Visit 9 - (Month 24); n=11Potassium; Visit 10-(Month 28); n=9Potassium; Visit 11-(Month 32); n=9Potassium; Visit 12-(Month 36); n=4Potassium; Study Conclusion/Withdrawal;n=27Potassium; Follow-Up Visit; n=4Sodium; Visit 1-Day 1; n=28Sodium; Visit 2 - Month 1; n=27Sodium; Visit 3 - Month 3; n=24Sodium; Visit 4 - Month 6; n=19Sodium; Visit 5 - Month 9; n=17Sodium; Visit 6 - Month 12; n=15Sodium; Visit 7-(Month 16); n=14Sodium; Visit 8 - (Month 20); n=12Sodium; Visit 9 - (Month 24); n=11Sodium; Visit 10-(Month 28); n=10Sodium; Visit 11-(Month 32); n=9Sodium; Visit 12-(Month 36); n=4Sodium; StudyConclusion/Withdrawal;n=27Sodium; Follow-Up Visit; n=4Urea/BUN; Visit 1-Day 1; n=28Urea/BUN; Visit 2 - Month 1; n=27Urea/BUN; Visit 3 - Month 3; n=24Urea/BUN; Visit 4 - Month 6; n=19Urea/BUN; Visit 5 - Month 9; n=17Urea/BUN; Visit 6 - Month 12; n=15Urea/BUN; Visit 7-(Month 16); n=14Urea/BUN; Visit 8 - (Month 20); n=12Urea/BUN; Visit 9 - (Month 24); n=11Urea/BUN; Visit 10-(Month 28); n=10Urea/BUN; Visit 11-(Month 32); n=9Urea/BUN; Visit 12-(Month 36); n=4Urea/BUN; Study Conclusion/Withdrawal;n=27Urea/BUN; Follow-Up Visit; n=4
RTG IR-0.015-0.0090.0170.0090.020-0.0130.0090.0130.0060.0120.0260.0130.0150.068-0.3-0.3-0.3-0.6-0.5-0.9-0.1-0.8-1.5-1.82.4-1.5-1.00.8-0.4-0.2-0.2-0.30.10.60.71.31.00.91.3-1.5-0.4-0.8-0.420.130.120.550.320.051.970.080.491.141.131.750.72-0.30-0.004-0.017-0.019-0.0160.0060.0270.0410.0400.0350.0580.0500.0200.0160.0530.01-0.050.000.070.010.100.060.090.080.21-0.020.18-0.020.20-0.9-0.30.8-0.30.70.70.20.81.11.31.2-2.00.20.50.140.360.460.370.620.510.250.910.460.390.771.900.180.25

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Change From Baseline in Creatinine, Direct Bilirubin, Total Bilirubin, and Uric Acid

Blood samples were collected from participants to evaluate change from Baseline in creatinine, direct bilirubin, total bilirubin, and uric acid. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionMicromoles per liter (µmol/L) (Mean)
Creatinine; Visit 1-Day 1; n=28Creatinine; Visit 2 - Month 1; n=27Creatinine; Visit 3 - Month 3; n=24Creatinine; Visit 4 - Month 6; n=19Creatinine; Visit 5 - Month 9; n=17Creatinine; Visit 6 - Month 12; n=15Creatinine; Visit 7-(Month 16); n=14Creatinine; Visit 8 - (Month 20); n=12Creatinine; Visit 9 - (Month 24); n=11Creatinine; Visit 10-(Month 28); n=10Creatinine; Visit 11-(Month 32); n=9Creatinine; Visit 12-(Month 36); n=4Creatinine; Study Conclusion/Withdrawal;n=27Creatinine; Follow-Up Visit; n=4Direct Bilirubin; Visit 1-Day 1; n=28Direct Bilirubin; Visit 2 - Month 1; n=27Direct Bilirubin; Visit 3 - Month 3; n=24Direct Bilirubin; Visit 4 - Month 6; n=19Direct Bilirubin; Visit 5 - Month 9; n=17Direct Bilirubin; Visit 6 - Month 12; n=15Direct Bilirubin; Visit 7-(Month 16); n=14Direct Bilirubin; Visit 8 - (Month 20); n=12Direct Bilirubin; Visit 9 - (Month 24); n=11Direct Bilirubin; Visit 10-(Month 28); n=10Direct Bilirubin; Visit 11-(Month 32); n=9Direct Bilirubin; Visit 12-(Month 36); n=4Direct Bilirubin; Study Conclusion/Withdrawal;n=27Direct Bilirubin; Follow-Up Visit; n=4Total Bilirubin; Visit 1-Day 1; n=28Total Bilirubin; Visit 2 - Month 1; n=27Total Bilirubin; Visit 3 - Month 3; n=24Total Bilirubin; Visit 4 - Month 6; n=19Total Bilirubin; Visit 5 - Month 9; n=17Total Bilirubin; Visit 6 - Month 12; n=15Total Bilirubin; Visit 7-(Month 16); n=14Total Bilirubin; Visit 8 - (Month 20); n=12Total Bilirubin; Visit 9 - (Month 24); n=11Total Bilirubin; Visit 10-(Month 28); n=10Total Bilirubin; Visit 11-(Month 32); n=9Total Bilirubin; Visit 12-(Month 36); n=4Total Bilirubin; Study Conclusion/Withdrawal;n=27Total Bilirubin; Follow-Up Visit; n=4Uric acid; Visit 1-Day 1; n=28Uric acid; Visit 2 - Month 1; n=27Uric acid; Visit 3 - Month 3; n=24Uric acid; Visit 4 - Month 6; n=19Uric acid; Visit 5 - Month 9; n=17Uric acid; Visit 6 - Month 12; n=15Uric acid; Visit 7-(Month 16); n=14Uric acid; Visit 8 - (Month 20); n=12Uric acid; Visit 9 - (Month 24); n=11Uric acid; Visit 10-(Month 28); n=10Uric acid; Visit 11-(Month 32); n=9Uric acid; Visit 12-(Month 36); n=4Uric acid; Study Conclusion/Withdrawal;n=26Uric acid; Follow-Up Visit; n=4
RTG IR-2.18-0.79-0.35-1.390.320.61-0.94-0.05-0.154.31-3.30-2.73-0.084.30-0.20.00.00.0-0.2-0.1-0.1-0.1-0.2-0.1-0.20.00.00.33.03.73.83.72.83.13.52.82.73.02.64.52.92.3-0.66.3-5.80.34.3-5.5-15.0-10.58.66.3-5.2-30.39.715.8

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Change From Baseline in Hematocrit

Blood samples were collected from participants for evaluation of hematocrit. Hematocrit is a ratio of red blood cells to the total volume of blood. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionProportion of red blood cells in blood (Mean)
Visit 1-Day 1; n=30Visit 2 - Month 1; n=28Visit 3 - Month 3; n=26Visit 4 - Month 6; n=18Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7 (Month 16); n=14Visit 8 (Month 20); n=12Visit 9 (Month 24); n=11Visit 10 (Month 28); n=10Visit 11 (Month 32); n=9Visit 12 (Month 36); n=4Study Conclusion/Withdrawal;n=28Follow-Up Visit; n=5
RTG IR-0.0035-0.0048-0.0033-0.0022-0.0004-0.00140.00270.01050.01740.01890.03440.04080.00550.0048

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Change From Baseline in Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC)

Blood samples were collected from participants to evaluate change from Baseline in hemoglobin and MCHC levels. Baseline assessment in this OLE study was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionGram per Liter (G/L) (Mean)
Hemoglobin; Visit 1-Day 1; n=30Hemoglobin; Visit 2 - Month 1; n=28Hemoglobin; Visit 3 - Month 3; n=26Hemoglobin; Visit 4 - Month 6; n=18Hemoglobin; Visit 5 - Month 9; n=17Hemoglobin; Visit 6 - Month 12; n=15Hemoglobin; Visit 7 (Month 16); n=14Hemoglobin; Visit 8 (Month 20); n=12Hemoglobin; Visit 9 (Month 24); n=11Hemoglobin; Visit 10 (Month 28); n=10Hemoglobin; Visit 11 (Month 32); n=9Hemoglobin; Visit 12 (Month 36); n=4Hemoglobin; Study Conclusion/Withdrawal;n=28Hemoglobin; Follow-Up Visit; n=5MCHC; Visit 1-Day 1; n=30MCHC; Visit 2 - Month 1; n=28MCHC; Visit 3 - Month 3; n=26MCHC; Visit 4 - Month 6; n=18MCHC; Visit 5 - Month 9; n=17MCHC; Visit 6 - Month 12; n=15MCHC; Visit 7 (Month 16); n=14MCHC; Visit 8 (Month 20); n=12MCHC; Visit 9 (Month 24); n=11MCHC; Visit 10 (Month 28); n=10MCHC; Visit 11 (Month 32); n=9MCHC; Visit 12 (Month 36); n=4MCHC; StudyConclusion/Withdrawal;n=28MCHC; Follow-Up Visit; n=5
RTG IR-2.6-2.8-2.2-0.2-0.8-1.9-1.52.32.61.99.18.01.31.8-3.1-2.9-2.41.2-1.1-2.6-5.1-2.3-6.4-9.9-4.6-12.8-1.30.8

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Change From Baseline in Mean Corpuscle Hemoglobin (MCH) Level

Blood samples were collected from participants to evaluate change from Baseline in MCH levels. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionPicogram (Pg) (Mean)
Visit 1-Day 1; n=30Visit 2 - Month 1; n=28Visit 3 - Month 3; n=26Visit 4 - Month 6; n=18Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7 (Month 16); n=14Visit 8 (Month 20); n=12Visit 9 (Month 24); n=11Visit 10 (Month 28); n=10Visit 11 (Month 32); n=9Visit 12 (Month 36); n=4StudyConclusion/Withdrawal; n=28Follow-Up Visit; n=5
RTG IR-0.30-0.16-0.23-0.14-0.46-0.65-0.56-0.73-0.87-0.76-0.73-1.53-0.52-0.64

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Change From Baseline in Mean Corpuscle Volume (MCV) and Mean Platelet Volume (MPV)

Blood samples were collected from participants to evaluate change from Baseline in MCV and MPV levels. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionFemtoliter (fL) (Mean)
MCV; Visit 1-Day 1; n=30MCV; Visit 2 - Month 1; n=28MCV; Visit 3 - Month 3; n=26MCV; Visit 4 - Month 6; n=18MCV; Visit 5 - Month 9; n=17MCV; Visit 6 - Month 12; n=15MCV; Visit 7-(Month 16); n=14MCV; Visit 8-(Month 20); n=12MCV; Visit 9-(Month 24); n=11MCV; Visit 10-(Month 28); n=10MCV; Visit 1- (Month 32); n=9MCV; Visit 12- (Month 36); n=4MCV; StudyConclusion/Withdrawal; n=28MCV; Follow-Up Visit; n=5MPV; Visit 1- Day 1; n=28MPV; Visit 2 - Month 1; n=28MPV; Visit 3 - Month 3; n=25MPV; Visit 4 - Month 6; n=18MPV; Visit 5 - Month 9; n=17MPV; Visit 6 - Month 12; n=15MPV; Visit 7-(Month 16); n=14MPV; Visit 8-(Month 20); n=11MPV; Visit 9-(Month 24); n=11MPV; Visit 10-(Month 28); n=10MPV; Visit 11- (Month 32); n=9MPV; Visit 12- (Month 36); n=4MPV; StudyConclusion/Withdrawal; n=28MPV; Follow-Up Visit; n=5
RTG IR0.10.40.1-0.7-1.1-1.2-0.1-1.3-0.70.8-0.8-0.8-1.0-2.2-0.43-0.41-0.34-0.07-0.32-0.19-0.36-0.150.07-0.140.21-0.73-0.180.28

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Change From Baseline in Post-void Residual (PVR) Bladder Ultrasound Volumes

The PVR bladder ultrasound was used to assess the effects of RTG on bladder function. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionMilliliter (mL) (Mean)
Visit 1-Day 1; n=29Visit 2 - Month 1; n=28Visit 3 - Month 3; n=25Visit 6 - Month 12; n=15Visit 7-(Month 16); n=1Visit 9 - (Month 24); n=10Visit 12-(Month 36); n=4Visit 13 (Month 40); n=1Study Conclusion/Withdrawal;n=29Follow-Up Visit; n=3
RTG IR-3.49.22.01.7-8.0-8.2-13.135.0-1.7-22.0

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Change From Baseline in Red Blood Cell (RBC) Count

Blood samples were collected from participants to evaluate change from Baseline in RBC count. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionTetra unit per liter (TI/L) (Mean)
Visit 1- Day 1; n=30Visit 2 - Month 1; n=28Visit 3 - Month 3; n=26Visit 4 - Month 6; n=18Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7 - (Month 16); n=14Visit 8 - (Month 20); n=12Visit 9 - (Month 24); n=11Visit 10 -(Month 28); n=10Visit 11- (Month 32); n=9Visit 12- (Month 36); n=4StudyConclusion/Withdrawal; n=28Follow-Up Visit; n=5
RTG IR-0.03-0.06-0.030.010.050.040.040.190.220.170.410.450.130.16

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Change From Baseline in Red Cell Distribution Width (RDW)

Blood samples were collected from participants to evaluate change from Baseline in RDW. RDW is a parameter that measures variation in red blood cell size or red blood cell volume. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionPercentage of width (Mean)
Visit 1- Day 1; n=30Visit 2 - Month 1; n=28Visit 3 - Month 3; n=26Visit 4 - Month 6; n=18Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7 - (Month 16); n=14Visit 8 - (Month 20); n=12Visit 9 - (Month 24); n=11Visit 10 -(Month 28); n=10Visit 11- (Month 32); n=9Visit 12- (Month 36); n=4Study Conclusion/Withdrawal; n=28Follow-Up Visit; n=5
RTG IR0.310.430.18-0.33-0.030.010.13-0.33-0.010.35-0.36-0.33-0.01-0.14

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Change From Baseline in Urine Albumin/Creatinine Ratio

Urine samples were collected from participants to evaluate change from Baseline in urine albumin/creatinine ratio. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. NA indicates data was not available as standard deviation could not be calculated for single participant. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionRatio (Mean)
Visit 1-Day 1; n=22Visit 2 - Month 1; n=19Visit 3 - Month 3; n=18Visit 4 - Month 6; n=14Visit 5 - Month 9; n=12Visit 6 - Month 12; n=10Visit 7-(Month 16); n=8Visit 8 - (Month 20); n=7Visit 9 - (Month 24); n=7Visit 10-(Month 28); n=6Visit 11-(Month 32); n=6Visit 12-(Month 36); n=1Study Conclusion/Withdrawal;n=17Follow-Up Visit; n=5
RTG IR-0.050.161.51-0.32-0.269.800.69-0.24-0.340.380.870.800.513.30

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Change From Baseline in Urine Creatinine Concentration

Urine samples were collected from participants to evaluate change from Baseline in Urine creatinine concentration. Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). Mean and SD were calculated. (NCT01777139)
Timeframe: Baseline and up to 4 years

Interventionµmol/L (Mean)
Visit 1-Day 1; n=30Visit 2 - Month 1; n=27Visit 3 - Month 3; n=25Visit 4 - Month 6; n=19Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7-(Month 16); n=14Visit 8 - (Month 20); n=12Visit 9 - (Month 24); n=11Visit 10-(Month 28); n=10Visit 11-(Month 32); n=9Visit 12-(Month 36); n=3Study Conclusion/Withdrawal;n=27Follow-Up Visit; n=5
RTG IR-1803.3-1725.9-508.0-94.7-58.8-286.7-235.7-341.7-81.84940.02944.41000.0-1781.57100.0

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Number of Participants With Abnormal Urinalysis Values (Categorical Data)

Urine samples were collected from participants to analyze presence of abnormal urinalysis parameters including glucose, ketones, RBC, WBC, occult blood and protein. Abnormal urinalysis values have been presented for all parameters. Only those participants with data available at specific time points were analyzed (represented by n= X in the category titles). (NCT01777139)
Timeframe: Up to 4 years

InterventionParticipants (Count of Participants)
Visit 1 Day1, Glucose, 4+or 2 or more g/dL,n=30Visit 1 Day 1, RBC, 1-3,n=29Visit 1 Day 1, RBC, 3-5, n=29Visit 1 Day 1, RBC, 5-10, n=29Visit 1 Day 1, RBC, 10-15, n=29Visit 1 Day 1, RBC, 15-25, n=29Visit 1 Day 1, RBC, 25-50, n=29Visit 1 Day 1, RBC, 50-100, n=29Visit 1 Day 1, WBC,1-3, n=29Visit 1 Day 1, WBC,3-5, n=29Visit 1 Day 1, WBC,5-10, n=29Visit 1 Day 1, Occult Blood,1+, n=30Visit 1 Day 1, Occult Blood,4+, n=30Visit 1 Day 1, protein, 1+, n=30Visit 2 Month 1, Glucose,1+ or 1/4 g/dL, n=28Visit 2 Month 1, Glucose,4+or 2 or more g/dL,n=28Visit 2 Month 1, Ketone 1+, n=28Visit 2 Month 1, RBC, 1-3, n=27Visit 2 Month 1, RBC, 3-5, n=27Visit 2 Month 1, RBC, 5-10, n=27Visit 2 Month 1, RBC, 10-15, n=27Visit 2 Month 1, RBC, 15-25, n=27Visit 2 Month 1, RBC, 50-100, n=27Visit 2 Month 1,WBC,1-3, n=27Visit 2 Month 1, WBC,3-5, n=27Visit 2 Month 1, Occult Blood,1+, n=28Visit 2 Month 1, protein, 1+, n=28Visit 3 Month 3, Ketones,1+, n=26Visit 3 Month 3, RBC, 1-3, n=26Visit 3 Month 3, RBC, 3-5, n=26Visit 3 Month 3, RBC, 5-10, n=26Visit 3 Month 3, RBC, 10-15, n=26Visit 3 Month 3, RBC, 15-25, n=26Visit 3 Month 3, RBC, 25-50, n=26Visit 3 Month 3, RBC,innumerable, n=26Visit 3 Month 3, WBC,1-3, n=26Visit 3 Month 3, WBC,15-25, n=26Visit 3 Month 3, WBC,innumerable, n=26Visit 3 Month 3, Occult Blood,1+, n=26Visit 3 Month 3, Occult Blood,4+, n=26Visit 3 Month 3, protein, 1+, n=26Visit 4 Month 6, Glucose,3+ or 1 g/dL, n=19Visit 4 Month 6, RBC, 1-3, n=19Visit 4 Month 6, RBC, 3-5, n=19Visit 4 Month 6, RBC, 5-10, n=19Visit 4 Month 6 RBC, 10-15,n=19Visit 4 Month 6, RBC, 15-25, n=19Visit 4 Month 6, RBC, 25-50, n=19Visit 4 Month 6, RBC, 50-100, n=19Visit 4 Month 6, WBC,1-3, n=19Visit 4 Month 6, WBC,3-5, n=19Visit 4 Month 6, Occult Blood,1+, n=19Visit 4 Month 6, protein, 1+,n=19Visit 5 Month 9, Glucose,2+ or 1/2 g/dL, n=17Visit 5 Month 9, Glucose,3+ or 1 g/dL, n=17Visit 5 Month 9, RBC, 1-3, n=17Visit 5 Month 9, RBC, 3-5, n=17Visit 5 Month 9, RBC, 5-10, n=17Visit 5 Month 9, RBC, 10-15, n=17Visit 5 Month 9, RBC, 15-25, n=17Visit 5 Month 9, RBC, 25-50, n=17Visit 5 Month 9, RBC, innumerable, n=17Visit 5 Month 9, WBC,1-3, n=17Visit 5 Month 9, WBC,15-25, n=17Visit 5 Month 9, WBC, innumerable, n=17Visit 5 Month 9,Occult Blood,1+, n=17Visit 5 Month 9, Occult Blood,4+, n=17Visit 5 Month 9, protein, 1+, n=17Visit 6 Month 12, RBC, 1-3, n= 15Visit 6 Month 12, RBC, 3-5, n= 15Visit 6 Month 12, RBC, 5-10, n= 15Visit 6 Month 12, RBC, 10-15, n= 15Visit 6 Month 12, RBC, 15-25, n= 15Visit 6, Month 12, WBC, 1-3, n= 15Visit 6, Month 12, WBC, 3-5, n= 15Visit 6, Month 12, Occult blood, 1+, n= 15Visit 6, Month 12, Protein, 1+, n= 15Visit 6, Month 12, Protein, 2+, n= 15Visit 7,Month16,Glucose, 4+ or 2 or more g/dL,n=14Visit 7, Month 16, Ketone, 1+, n= 14Visit 7, Month 16, RBC, 1-3, n= 13Visit 7, Month 16, RBC, 3-5, n= 13Visit 7, Month 16, RBC, 5-10, n= 13Visit 7, Month 16, RBC, 10-15, n= 13Visit 7, Month 16, RBC, 25-50, n= 13Visit 7, Month 16, WBC, 1-3, n= 13Visit 7, Month 16, WBC, 3-5, n= 13Visit 7, Month 16, Occult blood, 1+, n= 14Visit 7, Month 16, Occult blood, 4+, n= 14Visit 7, Month 16, Protein, 1+, n= 14Visit 8, Month 20, RBC, 1-3, n= 12Visit 8, Month 20, RBC, 3-5, n= 12Visit 8, Month 20, RBC, 10-15, n= 12Visit 8, Month 20, RBC, 15-25, n= 12Visit 8, Month 20, RBC, 25-50, n= 12Visit 8, Month 20, WBC, 1-3, n= 12Visit 8, Month 20, WBC, 3-5, n= 12Visit 8, Month 20, Occult blood, 1+, n= 12Visit 9,Month24,Glucose,4+ or 2 or more g/dL,n=11Visit 9, Month 24, RBC, 1-3, n= 11Visit 9, Month 24, RBC, 3-5, n= 11Visit 9, Month 24, RBC, 5-10, n= 11Visit 9, Month 24, RBC, 10-15, n= 11Visit 9, Month 24, RBC, 50-100, n= 11Visit 9, Month 24, WBC, 3-5, n= 11Visit 9, Month 24, WBC, Innumerable, n= 11Visit 9, Month 24, Occult blood, 1+, n= 11Visit 9, Month 24, Occult blood, 4+, n= 11Visit 9, Month 24, Protein, 1+, n= 11Visit 9, Month 24, Protein, 2+, n= 11Visit 10,Month28,Glucose,4+ or 2 or more g/dL,n=10Visit 10, Month 28, RBC, 1-3, n= 9Visit 10, Month 28, RBC, 3-5, n= 9Visit 10, Month 28, RBC, 5-10, n= 9Visit 10, Month 28, RBC, 25-50, n= 9Visit 10, Month 28, WBC, 1-3, n= 9Visit 10, Month 28, Occult blood, 1+, n= 10Visit 10, Month 28, Protein, 1+, n= 10Visit 11,Month 32,Glucose,4+ or 2 or more g/dL,n=9Visit 11, Month 32, RBC, 3-5, n= 9Visit 11, Month 32, RBC, 5-10, n= 9Visit 11, Month 32, RBC, 10-15, n= 9Visit 11, Month 32, RBC, 25-50, n= 9Visit 11, Month 32, RBC, 50-100, n= 9Visit 11, Month 32, WBC, 1-3, n= 9Visit 11, Month 32, WBC, 10-15, n= 9Visit 11, Month 32, WBC, innumerable, n= 9Visit 11, Month 32, Occult blood, 1+, n= 9Visit 11, Month 32, Occult blood, 2+, n= 9Visit 11, Month 32, Occult blood, 4+, n= 9Visit 12,Month 36,Glucose,4+ or 2 or more g/dL,n=4Visit 12, Month 36, RBC, 3-5, n= 4Visit 12, Month 36, RBC, 5-10, n= 4Visit 12, Month 36, Occult blood, 1+, n= 4Study conclusion/Withdrawal,Glucose,3+or1g/dL,n=28Study conclusion/Withdrawal,Glucose,4+or2g/dL,n=28Study conclusion/Withdrawal, Ketones, trace, n= 28Study conclusion/Withdrawal, RBC, 1-3, n= 28Study conclusion/Withdrawal, RBC, 3-5, n= 28Study conclusion/Withdrawal, RBC, 5-10, n= 28Study conclusion/Withdrawal, RBC, 10-15, n= 28Study conclusion/Withdrawal, RBC, 15-25, n= 28Study conclusion/Withdrawal, RBC, 25-50, n= 28Study conclusion/Withdrawal, WBC, 1-3, n= 28Study conclusion/Withdrawal, WBC, 3-5, n= 28Study conclusion/Withdrawal, WBC, 5-10, n= 28Study conclusion/Withdrawal, WBC 10-15, n= 28Study conclusion/Withdrawal, WBC 15-25, n= 28Study conclusion/Withdrawal, Occult blood,1+ n= 28Study conclusion/Withdrawal, Occult blood,2+ n= 28Study conclusion/Withdrawal, Occult blood,4+ n= 28Study conclusion/Withdrawal, Protein, trace, n= 28Study conclusion/Withdrawal, Protein, 1+, n= 28Follow up, Ketones, trace, n= 5Follow up, RBC, 1-3, n= 5Follow up, RBC, 5-10, n= 5Follow up, WBC, 1-3, n= 5Follow up, WBC, 10-15, n= 5Follow up, Protein, 1+, n= 5
RTG IR244616213121151117444115115153632214313162533121111231115331114111214352152421112232221113322112121312111112111222111211221111111112111215274224211121215112311

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Number of Participants With PCC Values of Change From Baseline for Body Weight

Body weight of participants were measured as a measure of safety. PCC range for body weight was increase or decrease of >=7 percent. A Baseline assessment in this OLE study was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Number of participants with PCC values of body weight at any Post-Baseline visit were presented. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionParticipants (Count of Participants)
Body weight;increase by >=7 percentBody weight; decrease by >=7 percent
RTG IR114

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Number of Participants With PCC Values of Change From Baseline for Electrocardiogram (ECG) Parameters

Single measurements of 12-lead ECGs were obtained in a supine position after at least 10 minutes of rest using an ECG machine that automatically calculates the heart rate (HR) as beats per minute (bpm) and measures PR, QRS, Bazett's correction QT interval (QTcB) and Friedericia's correction QT interval (QTcF) in milliseconds (msec). A Baseline assessment in this OLE study was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Number of participants with PCC values of ECG parameters at any Post-Baseline visit were presented. For the 'Any Post Baseline' value, only the worst case finding was counted for each participant. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionParticipants (Count of Participants)
HR <50 bpm, decreased from Baseline>=15 bpmHR >100 bpm, increased from Baseline >=15 bpmPR interval >=210 msec, increased from BaselineQRS interval >=120 msec, increased from BaselineQTcB:Post-Baseline QTc>=450, Baseline<450 msecQTcB:Post-Baseline QTc>=480, Baseline < 480 msecQTcB:Post-Baseline QTc>500 msecQTcB:Post-Baseline QTc>=500, Baseline <500msecQTcB:Increase in QTc of >30 msec from BaselineQTcB:Increase in QTc of >30,<=60 msecfrom BaselineQTcB:Increase in QTc of >60 msec from BaselineQTcF:Post-Baseline QTc>=450, Baseline<450 msecQTcF:Post-Baseline QTc>=480, Baseline<480 msecQTcF: Post-Baseline QTc>500 msecQTcF:Post-Baseline QTc>=500, Baseline<500 msecQTcF:Increase in QTc of >30 msec from BaselineQTcF:Increase in QTcof >30,<=60 msec from BaselineQTcF:Increase in QTc of >60 msec from Baseline
RTG IR101050003301000330

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Number of Participants With Potential Clinical Concern (PCC) Values of Change From Baseline for Vital Signs

The vital signs were evaluated as per PCC Criteria. The vital signs included systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR). The vital signs were measured in a seated position after 5 minutes of rest. PCC range for DBP was increase or decrease of >=20, for SBP was increase or decrease of >=15 and for heart rate was increase or decrease of >=15. A Baseline assessment in this OLE study was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Number of participants with vital sign values of PCC at any Post-Baseline visit were presented. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionParticipants (Count of Participants)
DBP; increase by >=20DBP; decrease by >=20SBP; increase by >=15SBP; decrease by >=15HR; increase by >=15HR; decrease by >=15
RTG IR495595

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Number of Participants With Resolution of Abnormal Eye Pigmentation After Discontinuation of RTG

The ophthalmologist/retina specialist determined the presence or absence of retinal and non-retinal ocular abnormalities. Retinal abnormalities included abnormalities in the macula and/or the peripheral retina. This analysis was performed on the All SFUCP Subjects population which comprised of all participants who enter the SFUCP. (NCT01777139)
Timeframe: Up to 1.4 years

InterventionParticipants (Count of Participants)
Retinal pigmentary abnormalityNon-retinal ocular pigmentary abnormality
RTG in SFUCP00

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Number of Participants With Suicidal Ideation or Behavior During Treatment Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)

"Number of participants with suicidal ideation or behavior during treatment were assessed using the C-SSRS score scale. It is a brief questionnaire designed to assess severity and change in suicidality by integrating both behavior and ideation using a semi-structured interview to probe participant responses. It consists of an assessment of suicidal ideation (ranging from desire to be dead to active suicidal ideation with specific plan and intent) and an assessment of suicidal behavior (ranging from preparatory acts or behavior to completed suicide)." (NCT01777139)
Timeframe: Up to 4 years

InterventionParticipants (Count of Participants)
Suicidal ideationSuicidal behavior
RTG IR10

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Number of Participants With Treatment Emergent (TE) Serious Adverse Events (SAEs) and Non-SAEs

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability, is a congenital anomaly/ birth defect, other situations and is associated with liver injury or impaired liver function is SAE. TEAE refers to an AE for which the onset was on or after the date of the first RTG dose in this study and on or before 30 days after the last RTG dose date. AEs that started in the parent study that worsened in this study were also considered as TEAEs. Safety population comprised of participants who take at least 1 dose of study medication after they have enrolled into this OLE study. Number of participants with TE-SAEs and non-SAEs (with incidence >= 5%) have been presented. (NCT01777139)
Timeframe: Up to 4 years

InterventionParticipants (Count of Participants)
Any non-SAEAny SAE
RTG IR235

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Potential of Hydrogen (pH) of Urine at Indicated Time Points

Urine Samples were collected to analyze pH. pH is a measure of hydrogen ion concentration and used to determine the acidity or alkalinity of urine. pH scale ranges from 0 to 14. A neutral pH is 7.0. The higher number indicates the more basic (alkaline) nature of urine and lower the number indicates the more acidic urine. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01777139)
Timeframe: Up to 4 years

InterventionScores on a scale (Mean)
Visit 1-Day 1; n=30Visit 2 - Month 1; n=28Visit 3 - Month 3; n=26Visit 4 - Month 6; n=19Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7-(Month 16); n=14Visit 8 - (Month 20); n=12Visit 9 - (Month 24); n=11Visit 10-(Month 28); n=10Visit 11-(Month 32); n=9Visit 12-(Month 36); n=4Study Conclusion/Withdrawal;n=28Follow-Up Visit; n=5
RTG IR6.686.486.356.396.746.406.546.716.866.806.786.886.526.10

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Specific Gravity of Urine at Indicated Time Points

Urine samples were collected to analyze specific gravity of urine. Specific gravity, is a measure of urine concentration and is measured using a chemical test. Specific gravity measurements provide a comparison of the amount of substances dissolved in urine as compared to pure water. If there were no solutes present, the specific gravity of urine would be 1.000 the same as pure water. Specific gravity between 1.002 and 1.035 could be considered as normal. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01777139)
Timeframe: Up to 4 years

InterventionKilograms per meter^3 (Kg/m^3) (Mean)
Visit 1-Day 1; n=30Visit 2 - Month 1; n=28Visit 3 - Month 3; n=26Visit 4 - Month 6; n=19Visit 5 - Month 9; n=17Visit 6 - Month 12; n=15Visit 7-(Month 16); n=14Visit 8 - (Month 20); n=12Visit 9 - (Month 24); n=11Visit 10-(Month 28); n=10Visit 11-(Month 32); n=9Visit 12-(Month 36); n=4Study Conclusion/Withdrawal;n=28Follow-Up Visit; n=5
RTG IR1.01601.01571.01871.01611.01531.01571.01461.01581.01451.01401.01391.01501.01661.0198

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Change From Baseline in American Urological Association (AUA) Symptom Scale Scores

The effect of RTG on bladder function was assessed using AUA symptom index. It is a 7-item Likert-scored scale with seven questions, each with six potential responses. Responses to each of 7 questions were scored from 0 (no symptom at all) to 5 (almost always symptoms present) which were summmed to get total possible score ranging from 0 to 35 with higher scores indicating worse symptom severity. The total score for all questions was classified as mild (0-7), moderate (8-19) or severe (>19). Baseline was defined as the last assessment of that endpoint in parent study RTG114855 taken prior to the first active treatment with RTG IR. Change from Baseline was defined as post-Baseline value minus Baseline value. Only those participants with data available at the specified data points were analyzed (represented by n= X in the category titles). (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionScores on a scale (Mean)
Visit 1-Day 1; n=29Visit 2-Month 1; n=28Visit 3 - Month 3; n=25Visit 6 - Month 12; n=15Visit 7-(Month 16); n=1Visit 9 - (Month 24); n=10Visit 12-(Month 36); n=4Visit 13 (Month 40); n=1Study Conclusion/Withdrawal;n=29Follow-Up Visit; n=5
Retigabine IR-0.50.3-0.3-0.7-2.0-0.13.00.01.11.2

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Number of Participants With Resolution of Dermatologist-confirmed Abnormal Discoloration After Discontinuation of RTG

The skin examination included assessment of the skin around the eyes and the eye lids, lips, nails, and mucosa. Participants who enter the SFUCP who had on-treatment finding(s) of abnormal discoloration of skin, lips, nails or mucosa confirmed by a dermatologist, underwent assessments performed by a dermatologist at 6-monthly intervals. (NCT01777139)
Timeframe: Up to 1.4 years

InterventionParticipants (Count of Participants)
RTG in SFUCP0

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Percent Change From Baseline in 28-day Total POS Frequency

The 28-day total POS frequency was calculated as the number of total POS reported during the treatment phase, divided by the number of applicable days in the treatment phase, then multiplying this ratio by 28. In this formula, innumerable seizures were counted as 10 seizures and status epilepticus was counted as 1 seizure. As this was an OLE study, Baseline was defined by the parent study Baseline period. The percent change from Baseline was calculated as the 28-day total POS on-treatment frequency (during dosing in this study, not including the taper phase) minus the Baseline 28-day total POS frequency, with this difference being divided by the Baseline 28-day partial seizure rate, and the resulting quantity multiplied by 100. It was calculated as overall and by duration of exposure. Mean and SD were presented. (NCT01777139)
Timeframe: Baseline and up to 4 years

InterventionPercent change (Mean)
RTG IR-29.37

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Percentage of Participants With a Clinically Significant Decrease in Visual Acuity From Initial Examination

Percentage of participants with a clinically significant decrease in visual acuity from initial examination were evaluated. Only abnormalities occurring on-treatment in study RTG114873 were presented. (NCT01777139)
Timeframe: Up to 4 years

InterventionPercentage of participants (Number)
RTG IR16

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Percentage of Participants With Decrease in Confrontational Visual Field From Initial Examination

Percentage of participants with decrease in confrontational visual field from initial examination were evaluated. Only abnormalities occurring on-treatment in study RTG114873 were presented. (NCT01777139)
Timeframe: Up to 4 years

InterventionPercentage of participants (Number)
RTG IR21

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Percentage of Participants With Dermatologist-confirmed Abnormal Discoloration

Percentage of participants with abnormal findings after skin examination (including the skin around the eyes and the eyelids, lips, nails, or mucosa) were evaluated. (NCT01777139)
Timeframe: Up to 4 years

InterventionPercentage of participants (Number)
RTG IR0

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Percentage of Participants With Pigmentation of Non-retinal Ocular Tissues

Percentage of participants with abnormal findings after eye examination were evaluated. Abnormalities detected on-treatment in study RTG114873 were presented. Pigmentation of non-retinal ocular tissues included pigmentation of the sclera and/or conjunctiva, cornea, iris and lens. (NCT01777139)
Timeframe: Up to 4 years

InterventionPercentage of participants (Number)
RTG IR32

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Percentage of Participants With Retinal Pigmentary Abnormalities

Percentage of participants with abnormal findings after eye examination were evaluated. Abnormalities detected on-treatment in study RTG114873 were presented. Retinal pigmentary abnormalities included abnormalities in the macula, peripheral retina and unspecified location. (NCT01777139)
Timeframe: Up to 4 years

InterventionPercentage of participants (Number)
RTG IR18

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Percentage of Participants With TEAEs Leading to Study Discontinuation

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. TEAE refers to an AE for which the onset was on or after the date of the first RTG dose in this study and on or before 30 days after the last RTG dose date. Percentage of participants with TEAEs leading to study discontinuation were presented. (NCT01777139)
Timeframe: Up to 4 years

InterventionPercentage of Participants (Number)
RTG IR17

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Percentage of Responders to POS Frequency

A responder was defined as a participant experiencing a >=50 percent reduction in 28 day total POS frequency from Baseline. A responder rate was calculated overall and based on duration of exposure. As this was an OLE study, Baseline was defined by the parent study Baseline period. Percentage of responders were evaluated from study RTG114873 Day 1 through the last dosing day, excluding the Taper Phase. (NCT01777139)
Timeframe: Up to 4 years

InterventionPercentage of responders (Number)
RTG IR23

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Columbia-Suicide Severity Rating Scale (C-SSRS)

The Columbia-Suicide Severity Rating Scale (C-SSRS) is a comprehensive, semi-structured interview measure that uniquely measures the full spectrum of suicidality including passive and active suicidal ideation, suicidal intent as well as suicidal behaviors. Full range from 0 (low intensity suicidal ideation to 9 (high intensity suicidal ideation). (NCT02149836)
Timeframe: 8 weeks

Interventionunits on a scale (Mean)
Ezogabine0.278

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Patient Rated Inventory of Side Effects (PRISE)

Number of symptom events as reported by the patient in a self-report measure. PRISE assesses the presence of treatment side effects in nine organ/function systems (gastrointestinal, nervous system, heart, eyes/ears, skin, genital/urinary, sleep, sexual functioning, and other) (NCT02149836)
Timeframe: 8 weeks

Interventionevents (Number)
Ezogabine105

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Changes in Reward System Activation After Treatment With Ezogabine

Functional MRI of reward processing: The primary neuroimaging endpoint is the degree of change observed in the reward system in the brain. Although it was an outcome measure, the data format is a set of 4-dimensional statistical maps and not reported in raw data. Mean changes in activation of the ventral tegmental area (VTA) or ventral striatum (VS) in response to reward cue to reward receipt, and VTA mean change in beta weight in response to reward cue at 8 weeks as compared to baseline. The Z-score indicates the number of standard deviations away from a reference population in the same age range. A Z-score of 0 is equal to the mean. Negative numbers indicate values lower than the mean and positive numbers indicate values higher than the mean. (NCT02149836)
Timeframe: baseline and post treatment (8 weeks)

Interventionz-score (Mean)
VTA in response to reward cueVTA in response to reward receiptVS in response to reward cueVS in response to reward receipt
Ezogabine-0.043-0.021-0.0310.013

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Montgomery-Asberg Depression Rating Scale Comparison to Baseline

The Montgomery-Asberg Depression Rating Scale (29) is a 10-item instrument used for the evaluation of depressive symptoms in adults and for the assessment of any changes to those symptoms. Each of the 10 items is rated on a scale of 0 to 6, with differing descriptors for each item. These individual item scores are added together to form a total score, which can range between 0 and 60 points. The MADRS is specifically designed to detect changes in depression severity in the context of a medication treatment trial. (NCT02149836)
Timeframe: baseline and after end of treatment (10 weeks)

Interventionunits on a scale (Mean)
Baseline10 weeks
Ezogabine29.5015.83

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Number of Participants Who Tolerate Study Drug

Participants will be judged tolerant of study drug if they reached their target dose and remain on study drug until planned discontinuation. Tolerability will be summarized as the proportion of participants in a treatment group who are tolerant of study drug. (NCT02450552)
Timeframe: 10 weeks

InterventionParticipants (Count of Participants)
Oral Ezogabine 900 mg/Day14
Oral Ezogabine 600 mg/Day11
Placebo23

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Hand Held Dynamometry Force Measurement for Abductor Pollicis Brevis

Hand held dynamometry (HHD) will be used as a quantitative measure of muscle strength of the abductor pollicis brevis (APB) muscle. HHD will be self-report by study participants using a daily muscle cramping diary. (NCT02450552)
Timeframe: Screening, Baseline, Week 4, Week 6, Week 8, Week 12

,,
Interventionkilograms (kg) (Mean)
ScreeningBaselineWeek 4Week 6Week 8Week 12
Oral Ezogabine 600 mg/Day8.5776.6417.3336.9215.6335.439
Oral Ezogabine 900 mg/Day6.7216.5846.4616.8387.0155.887
Placebo7.4487.1646.6866.3006.5235.643

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Proportion of Days With Fasciculations

For the purpose of this study, a fasciculation is a brief, spontaneous contraction affecting a small number of muscle fibers, often causing a flicker of movement under the skin. Defining interference with daily activities may be different for each subject and defining daily activities will be different for each subject. Subjects will self report by diary, days with fasciculations. (NCT02450552)
Timeframe: Week 1 through Week 10

,,
InterventionProportion of Days (Mean)
Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9Week 10
Oral Ezogabine 600 mg/Day0.6590.6370.6480.6370.6590.7140.7670.6880.6570.700
Oral Ezogabine 900 mg/Day0.9180.9180.7960.7520.8790.8680.9120.8680.8930.869
Placebo0.7450.7760.8160.8060.7330.7650.7860.7140.8570.813

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Muscle Cramping Frequency

Frequency of muscle cramping and maximum pain from muscle cramping was collected by subjects via self-report using a daily muscle cramping diary. (NCT02450552)
Timeframe: Week 1 through Week 10

,,
InterventionDays (Mean)
Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9Week 10
Oral Ezogabine 600 mg/Day8.7387.0837.7509.13510.2658.3339.7149.0679.93310.188
Oral Ezogabine 900 mg/Day12.1769.23510.90612.01812.53311.0339.40011.21112.78613.179
Placebo9.5368.27310.170106.198.9558.5399.6099.28211.19013.600

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Change in Strength Duration Time Constant

Assessed by threshold tracking axonal nerve conduction studies (TTNCS). (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
InterventionMilliseconds (Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day0.4510.4540.4800.461
Oral Ezogabine 900 mg/Day0.5210.5220.4160.341
Placebo0.5050.4880.5460.497

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Change in Short-interval Intracortical Inhibition (SICI) Measured by Transcranial Magnetic Stimulation (TMS)

Short-interval intracortical inhibition (SICI) or paired-pulse SICI is defined as the ratio of the response after a conditioning pulse equal to 80% of resting motor threshold (RMT) is administered 3 ms prior to the signaling pulse divided by motor evoked potential (MEP) amplitude. Transcranial magnetic stimulation (TMS) is a neurophysiologic test for assessing upper motor neuron function. Change in SICI will be assessed by transcranial magnetic stimulation (TMS) after treatment with 900 mg/day or 600 mg/day of ezogabine vs. matched oral placebo. (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
InterventionUnitless (Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day0.9650.9520.6750.617
Oral Ezogabine 900 mg/Day1.1801.3471.1000.948
Placebo0.7840.7550.7770.834

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Change in Resting Motor Evoked Potential (MEP) Threshold (Prespecified Secondary Outcome of Primary Importance)

Resting Motor Evoked Potential (MEP) is the magnetic field strength, measured as a percentage of the maximum stimulator output, that produces at least a 0.05 mV response in at least 5 of 10 consecutive trials.Change in resting MEP threshold will be assessed by Transcranial Magnetic Stimulation (TMS). (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
Interventionpercentage of the maximum output (Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day52.00054.25057.58356.700
Oral Ezogabine 900 mg/Day51.25048.38550.11146.00
Placebo56.30857.23154.71455.357

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Change in Recovery Cycle

Lower motor neuron excitability can be measured using change in recovery cycle of superexcitability. Change in recovery cycle of superexcitability after first pre-pulse is assessed by threshold tracking axonal nerve conduction studies (TTNCS). Threshold-tracking nerve conduction studies is a neurophysiologic test for assessing lower motor neuron function. (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
Interventionpercentage of threshold (Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day-28.12-27.40-37.48-33.15
Oral Ezogabine 900 mg/Day-30.45-31.39-37.59-38.20
Placebo-27.77-28.16-28.37-29.26

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Change in MEP Amplitude

Motor Evoked Potential (MEP) amplitude is defined as the response when a stimulus equal to 120% of Resting Motor Threshold (RMT) is administered. MEP amplitude is calculated as the geometric mean of replicate estimates. Change in MEP will be assessed by Transcranial Magnetic Stimulation (TMS). (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
InterventionMillivolts (Geometric Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day1.2100.9540.9141.129
Oral Ezogabine 900 mg/Day0.6390.3951.780.571
Placebo0.8451.0980.4540.450

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Change in Intracortical Facilitation

Paired-pulse Intracortical facilitation (ICF) is defined as the ratio of the response after a conditioning pulse equal to 80% of Resting Motor Threshold (RMT) is administered 15 milliseconds prior to the signaling pulse divided by Motor Evoked Potential (MEP) amplitude. ICF is calculated as the geometric mean of replicate estimates. Change in intracortical facilitation is assessed by Transcranial Magnetic Stimulation (TMS). (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
InterventionUnitless (Geometric Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day1.8492.0731.5351.466
Oral Ezogabine 900 mg/Day1.8292.4201.8941.779
Placebo1.6531.5311.5711.514

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Change in Duration of Cortical Silent Period

Cortical silent period (CSP) is the suppression of voluntary muscle contraction elicited by stimulation equal to 120% of resting motor threshold (RMT). CSP duration is measured from the time of the muscle activity suppression to return of muscle activity. Change in duration of cortical silent period is assessed by Transcranial Magnetic Stimulation (TMS). (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
InterventionMilliseconds (Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day69.27376.00674.91758.870
Oral Ezogabine 900 mg/Day99.54280.22396.84488.000
Placebo88.83180.63883.47987.479

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Change in Electrotonus

Change in depolarizing electrotonus at 90 to 100 milliseconds was assessed by threshold tracking axonal nerve conduction studies (TTNCS). TTNCS is a neurophysiologic test for assessing lower motor neuron function. (NCT02450552)
Timeframe: Screening, Baseline, Week 6, Week 8

,,
Interventionpercentage of threshold (Mean)
ScreeningBaselineWeek 6Week 8
Oral Ezogabine 600 mg/Day48.14448.90151.85748.552
Oral Ezogabine 900 mg/Day52.27546.27850.18750.108
Placebo44.53246.57444.89847.010

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Clinical Global Impression - Severity (CGI-S)

Clinician rated global measure of subject overall illness severity. a 7-point scale rated as 1, normal, not at all ill; 2, borderline mentally ill; 3, mildly ill; 4, moderately ill; 5, markedly ill; 6, severely ill; or 7, extremely ill. (NCT03043560)
Timeframe: baseline and 5 weeks

,
Interventionscore on a scale (Mean)
baseline5 weeks
Ezogabine4.42.6
Placebo4.63.3

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Montgomery-Asberg Depression Rating Scale (MADRS)

A 10-item instrument used for the evaluation of depressive symptoms in adults and for the assessment of any changes to those symptoms. Each items is scored 0 (normal) to 6 (severe depression) with overall score ranges from 0 (normal) to 60 (severe depression). (NCT03043560)
Timeframe: baseline and 5 weeks

,
Interventionscore on a scale (Mean)
baseline5 weeks
Ezogabine28.312.7
Placebo26.818.5

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Specific Loss of Interest and Pleasure Scale (SLIPS)

The SLIPS is a recently developed and validated measure of anhedonia that is tailored to detect recent changes in anhedonia. A 23-item measure, each item range from 0-3. Full scale from 0 to 69, higher score indicates more recent changes. (NCT03043560)
Timeframe: baseline 5 weeks

,
Interventionscore on a scale (Mean)
baseline5 weeks
Ezogabine32.316.3
Placebo28.821.5

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Temporal Experience of Pleasure Scale (TEPS)

The TEPS is composed of 18-items rated on a likert-type scale ranging from 1 (Very True for me) to 6 (Very False for me), and yields two subscales. Ten items make up the TEPS-Anticipatory Pleasure (TEPS-ANT) scale with a range from 10 (not motivated) to 60 (highly motivated). The other eight TEPS items make up the TEPS-Consummatory Pleasure (TEPS-CON) scale; range from 8 (not responsive) to 48 (highly responsive). Total scores range is 18-108. Lower scores indicate greater levels of anhedonia. (NCT03043560)
Timeframe: baseline and 5 weeks

,
Interventionscore on a scale (Mean)
TEPS-ANT baselineTEPS-ANT 5 weeksTEPS-CON baselineTEPS-CON 5 weeks
Ezogabine26.337.324.832.2
Placebo28.632.425.629.9

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World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0)

A 12-item generic assessment instrument that measures the level of functioning. Each item is scored from 0 to 4 and the items are summed to provide a total score. The score therefore ranges from 0 to 48, with higher scores indicating greater disability. (NCT03043560)
Timeframe: baseline and 5 weeks

,
Interventionscore on a scale (Mean)
baseline5 weeks
Ezogabine15.510.2
Placebo16.511.6

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Anticipatory and Consummatory Interpersonal Pleasure Scale (ACIPS)

A measure specifically designed to assess hedonic capacity for social and interpersonal pleasure.The ACIPS is a 17-item self-report measure scored on a likert scale, ranging from 1 (very false for me) to 6 (very true for me). Full scale from 17-102, higher score indicates higher hedonic capacity (NCT03043560)
Timeframe: baseline and 5 weeks

,
Interventionscore on a scale (Mean)
baseline5 weeks
Ezogabine46.165.1
Placebo53.759

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Change in Snaith-Hamilton Pleasure Scale (SHAPS)

"The SHAPS is a well-validated 14-item self-report questionnaire commonly used to assess anhedonia. Each item on the SHAPS is worded so that higher scores indicate greater pleasure capacity. A total score can be derived by summing the responses to each item. Items answered with strongly agree are coded as 1, while a strongly disagree response was assigned a score of 4. Total scores on the SHAPS can range from 14 to 56, with higher scores corresponding to higher levels of anhedonia." (NCT03043560)
Timeframe: baseline and 5 weeks

,
Interventionscore on a scale (Mean)
Baseline5 weeks
Ezogabine38.727.5
Placebo33.730

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Change in Ventral Striatum (VS) Activation

"change in activation during reward anticipation within the bilateral VS from baseline (Study Visit 0) to the primary outcome visit (Study Visit 5) as measured by functional MRI during the incentive flanker task (IFT). The IFT, like the Monetary Incentive Delay task, permits discrete modeling of brain activity during anticipation of an incentive.~Functional scans were preprocessed and denoised for motion and physiological noise using multi-echo independent component analysis (ME-ICA). Task-based modeling was conducted using AFNI and FSL software. The primary outcome for reward anticipation was the contrast of reward cue compared to neutral cue (reward>neutral cue). The primary imaging outcome was analyzed using a linear mixed model with a single random intercept term treating time as discrete or continuous as appropriate." (NCT03043560)
Timeframe: baseline and 5 weeks

,
InterventionBold Oxygen-level Dependent (BOLD) Signa (Mean)
baseline5 weeks
Ezogabine-0.260.176
Placebo0.950.015

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Clinical Global Impression - Improvement (CGI-I)

A widely administered clinician rated global measure of the degree of improvement from the initial assessment in subject overall illness severity. 7 point scale rated as: 1, very much improved; 2, much improved; 3, minimally improved; 4, no change; 5, minimally worse; 6, much worse; or 7, very much worse. (NCT03043560)
Timeframe: baseline and 5 weeks

,
Interventionscore on a scale (Mean)
baseline5 weeks
Ezogabine42.1
Placebo42.8

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