Trial | Outcome |
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
Intervention | participants (Number) |
---|
| No new seizure type | Partial seizures without motor signs | Partial evolving to secondarily generalized | Complex partial seizures | Partial seizures with motor signs | Flurries | Tonic-clonic seizures | Atonic seizures |
---|
Placebo - DB Phase (Titration + Maintenance) | 33 | 12 | 7 | 5 | 11 | 3 | 0 | 1 |
,Retigabine DB Phase (Titration + Maintenance) | 42 | 17 | 12 | 11 | 7 | 1 | 1 | 0 |
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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
Intervention | participants (Number) |
---|
| 75% to 100% reduction | 50% to <75% reduction | 25% to <50% reduction | >0 to <25% reduction | No reduction |
---|
Placebo - DB Phase (Titration + Maintenance) | 6 | 21 | 37 | 33 | 55 |
,Retigabine DB Phase (Titration + Maintenance) | 27 | 41 | 20 | 26 | 39 |
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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
Intervention | participants (Number) |
---|
| 0% to 25% increase | >=25% increase | >0% reduction |
---|
Placebo - Maintenance Phase | 20 | 21 | 96 |
,Retigabine - Maintenance Phase | 4 | 16 | 99 |
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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
Intervention | participants (Number) |
---|
| Urinary hesitation | Dysuria | Chromaturia | Polyuria | Nephrolithiasis | Hematuria | Urinary retention |
---|
Placebo - DB Phase (Titration and Maintenance) | 1 | 2 | 0 | 1 | 0 | 1 | 2 |
,Placebo (DB Phase) and Retigabine (Transition Phase) | 2 | 2 | 0 | 0 | 0 | 2 | 2 |
,Retigabine - DB Phase (Titration and Maintenance) | 9 | 8 | 7 | 4 | 4 | 2 | 1 |
,Retigabine (DB Phase) and Retigabine (Transition Phase) | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
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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
Intervention | participants (Number) |
---|
| Responders | Non-responders |
---|
Placebo - DB Phase (Titration + Maintenance) | 27 | 125 |
,Retigabine - DB Phase (Titration + Maintenance) | 68 | 85 |
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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
Intervention | participants (Number) |
---|
| Responders | Non-responders |
---|
Placebo - Maintenance Phase | 31 | 106 |
,Retigabine - Maintenance Phase | 66 | 53 |
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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
Intervention | participants (Number) |
---|
| Seizure free | Not seizure free |
---|
Placebo - DB Phase (Titration + Maintenance) | 0 | 150 |
,Retigabine DB Phase (Titration + Maintenance) | 3 | 148 |
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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
Intervention | participants (Number) |
---|
| Seizure free | Not seizure free |
---|
Placebo - Maintenance Phase | 2 | 135 |
,Retigabine - Maintenance Phase | 9 | 110 |
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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
Intervention | participants (Number) |
---|
| Urine analysis abnormal | Bacteria urine | Hematology test abnormal | Urinary sediment present |
---|
Placebo - DB Phase (Titration and Maintenance) | 3 | 1 | 0 | 1 |
,Placebo (DB Phase) and Retigabine (Transition Phase) | 3 | 0 | 0 | 0 |
,Retigabine - DB Phase (Titration and Maintenance) | 4 | 1 | 1 | 0 |
,Retigabine (DB Phase) and Retigabine (Transition Phase) | 2 | 2 | 2 | 2 |
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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
Intervention | participants (Number) |
---|
| Titration Phase, Week 2, n=149, 150 | Titration Phase, Week 4, n=145, 144 | Titration Phase, Week 6, n=146, 129 | Maintenance Phase, Week 7, n=130, 121 | Maintenance Phase, Week 8, n=135, 128 | Maintenance Phase, Week 10, n=136, 119 | Maintenance Phase, Week 14, n=137, 109 | Maintenance Phase, Week 18, n=127, 92 |
---|
Placebo - DB Phase (Titration + Maintenance) | 0 | 0 | 1 | 2 | 1 | 3 | 3 | 4 |
,Retigabine DB Phase (Titration + Maintenance) | 5 | 5 | 6 | 9 | 10 | 15 | 18 | 17 |
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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
Intervention | participants (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) | 0 | 5 | 4 | 7 | 11 | 11 | 13 | 19 | 13 | 14 | 14 | 12 | 4 | 25 |
,Retigabine DB Phase (Titration + Maintenance) | 12 | 11 | 10 | 20 | 15 | 10 | 6 | 12 | 10 | 8 | 10 | 5 | 4 | 20 |
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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
Intervention | participants (Number) |
---|
| >75% reduction | 50% to 75% reduction | >0 to <50% reduction | No reduction |
---|
Placebo - Maintenance Phase | 13 | 18 | 65 | 41 |
,Retigabine - Maintenance Phase | 37 | 29 | 33 | 20 |
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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
Intervention | scores on a scale (Mean) |
---|
| Baseline (Week -7 through Week 0), n=139, 137 | Week 6 (Titration Phase), n=127, 108 | Week 10 (Maintenance Phase), n=121, 102 | Week 18 (Maintenance Phase), n=116, 85 |
---|
Placebo - DB Phase (Titration + Maintenance) | 52.6 | 55.2 | 57.9 | 57.3 |
,Retigabine DB Phase (Titration + Maintenance) | 55.6 | 55.7 | 56.2 | 53.8 |
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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
Intervention | scores on a scale (Mean) |
---|
Placebo - Maintenance Phase | 3.2 |
Retigabine - Maintenance Phase | 2.7 |
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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
Intervention | scores on a scale (Mean) |
---|
Placebo - Maintenance Phase | 2.9 |
Retigabine - Maintenance Phase | 2.9 |
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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
Intervention | percent 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
Intervention | percent 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
Intervention | percentage 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
Intervention | percentage of days (Median) |
---|
Placebo - Maintenance Phase | 78.2 |
Retigabine - Maintenance Phase | 86.9 |
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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
Intervention | milliliters (Median) |
---|
| Week 10, n=111, 100 | Week 18, n=95, 76 |
---|
Placebo - DB Phase (Titration and Maintenance) | -1.0 | -3.0 |
,Retigabine - DB Phase (Titration and Maintenance) | 0.0 | 0.0 |
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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
Intervention | participants (Number) |
---|
| Responders | Non-responders |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 31 | 148 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 57 | 124 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 70 | 108 |
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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
Intervention | participants (Number) |
---|
| Seizure-free | Not seizure-free |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 2 | 174 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 0 | 179 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 7 | 168 |
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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
Intervention | participants (Number) |
---|
| Seizure-free | Not seizure-free |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 2 | 162 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 5 | 153 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 7 | 142 |
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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
Intervention | participants (Number) |
---|
| Protenuria | Hyperlipidemia | Hypercholesterolemia | Hematuria |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 3 | 3 | 2 | 2 |
,Placebo - Transition Phase | 0 | 0 | 0 | 1 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 2 | 0 | 4 | 5 |
,Retigabine 200 mg TID - Transition Phase | 1 | 0 | 0 | 0 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 0 | 0 | 1 | 2 |
,Retigabine 300 mg TID - Transition Phase | 0 | 0 | 1 | 1 |
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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
Intervention | participants (Number) |
---|
| Week 2, n=174, 180, 175 | Week 4, n=169, 172, 167 | Week 6, n=169, 165, 152 | Week 8, n=161, 160, 149 | Week 12, n=159, 151, 144 | Week 16, n=153, 139, 132 |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 0 | 0 | 1 | 1 | 6 | 4 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 3 | 7 | 8 | 9 | 15 | 13 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 3 | 8 | 7 | 7 | 13 | 12 |
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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
Intervention | participants (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) | 3 | 4 | 8 | 7 | 9 | 9 | 15 | 24 | 18 | 16 | 20 | 13 | 8 | 25 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 5 | 8 | 11 | 14 | 19 | 13 | 16 | 16 | 18 | 13 | 11 | 9 | 3 | 25 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 11 | 14 | 7 | 21 | 17 | 17 | 21 | 9 | 10 | 8 | 11 | 7 | 1 | 24 |
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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
Intervention | participants (Number) |
---|
| 75% to 100% reduction | 50% to <75% reduction | 25% to <50% reduction | >0 to <25% reduction | No reduction |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 12 | 19 | 39 | 43 | 66 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 16 | 41 | 38 | 38 | 48 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 27 | 43 | 41 | 24 | 43 |
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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
Intervention | participants (Number) |
---|
| >75% reduction | 50% to 75% reduction | >0 to <50% reduction | No reduction |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 11 | 20 | 83 | 50 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 27 | 34 | 60 | 37 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 30 | 40 | 49 | 30 |
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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
Intervention | scores on a scale (Mean) |
---|
| Baseline, n=165, 173, 166 | Week 4 (Titration Phase), n=155, 155, 149) | Week 8 (Maintenance Phase), n=141, 146, 127 | Week 16 (Maintenance Phase), n=143, 133, 123 |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 53.3 | 55.4 | 55.3 | 54.7 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 56.0 | 57.3 | 59.6 | 59.1 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 52.1 | 52.7 | 52.7 | 53.2 |
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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
Intervention | scores 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
Intervention | Percent 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)
Intervention | percent 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
Intervention | percentage 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
Intervention | percentage 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
Intervention | milliliters (Median) |
---|
| Week 8, n=143, 134, 121 | Week 16, n=141, 131, 115 |
---|
Placebo: Maintenance Phase | 0 | 0 |
,Retigabine 200 mg TID: Maintenance Phase | 0 | 0 |
,Retigabine 300 mg TID: Maintenance Phase | 0 | 0 |
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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
Intervention | participants (Number) |
---|
| Responders | Non-responders |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 31 | 133 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance | 61 | 97 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 70 | 79 |
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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
Intervention | participants (Number) |
---|
| Partial seizures without motor signs | Partial evolving to secondarily generalized | Partial seizures with motor signs | Tonic-clonic seizures | Flurries | Tonic seizures | Complex partial seizures | Unclassified seizures |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 9 | 6 | 5 | 0 | 3 | 3 | 1 | 0 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 8 | 5 | 6 | 0 | 2 | 0 | 4 | 1 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 12 | 9 | 3 | 3 | 1 | 1 | 4 | 0 |
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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
Intervention | participants (Number) |
---|
| 0% to 25% increase | >=25% increase | >0% reduction |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 28 | 22 | 114 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 14 | 23 | 121 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 11 | 19 | 119 |
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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
Intervention | scores 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
Intervention | participants (Number) |
---|
| Dysuria | Urinary retention | Polyuria | Urinary hesitation | Haematuria |
---|
Placebo - DB Phase (Titration Plus Maintenance) | 0 | 0 | 4 | 3 | 2 |
,Placebo - Transition Phase | 0 | 0 | 0 | 3 | 1 |
,Retigabine 200 mg TID - DB Phase (Titration Plus Maintenance) | 3 | 1 | 1 | 6 | 5 |
,Retigabine 200 mg TID - Transition Phase | 0 | 0 | 0 | 1 | 0 |
,Retigabine 300 mg TID - DB Phase (Titration Plus Maintenance) | 4 | 4 | 2 | 1 | 2 |
,Retigabine 300 mg TID - Transition Phase | 0 | 0 | 0 | 0 | 1 |
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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
Intervention | Participants (Number) |
---|
Overall Study | 14 |
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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
Intervention | Participants (Number) |
---|
Overall Study | 20 |
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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
Intervention | Participants (Number) |
---|
Overall Study | 0 |
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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
Intervention | Participants (Number) |
---|
Overall Study | 11 |
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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
Intervention | Participants (Number) |
---|
Overall Study | 14 |
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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
Intervention | Participants (Number) |
---|
Retigabine SFUCP | 1 |
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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
Intervention | Participants. (Number) |
---|
Overall Study | 52 |
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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
Intervention | Participants (Number) |
---|
Overall Study | 98 |
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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
Intervention | Beats per Minute (Mean) |
---|
| Su HR Mon 1, n=174 | Su HR Mon 3, n=159 | Su HR Mon 6, n=143 | Su HR Mon 9, n=124 | Su HR Mon 12, n=173 | Su HR Mon 16, n=104 | Su HR Mon 20, n=100 | Su HR Mon 24, n=112 | Su HR Mon 28, n=88 | Su HR Mon 32, n=85 | Su HR Mon 36, n=92 | Su HR Mon 40, n=78 | Su HR Mon 44, n=76 | Su HR Mon 48, n=82 | Su HR Mon 52, n=67 | Su HR Mon 56, n=63 | Su HR Mon 60, n=70 | Su HR Mon 64, n=50 | Su HR Mon 68, n=45 | Su HR Mon 72, n=57 | Su HR Mon 76, n=31 | Su HR Mon 80, n=24 | Su HR Mon 84, n=36 | Su HR Mon 88, n=17 | Su HR Mon 92, n=16 | Su HR Mon 96, n=19 | Su HR Mon 100, n=7 | Su HR Mon 104, n=1 | Su HR Mon 108, n=10 | St HR Mon 1, n=174 | St HR Mon 3, n=158 | St HR Mon 6, n=143 | St HR Mon 9, n=124 | St HR Mon 12, n=170 | St HR Mon 16, n=104 | St HR Mon 20, n=100 | St HR Mon 24, n=110 | St HR Mon 28, n=87 | St HR Mon 32, n=84 | St HR Mon 36, n=91 | St HR Mon 40, n=77 | St HR Mon 44, n=75 | St HR Mon 48, n=81 | St HR Mon 52, n=67 | St HR Mon 56, n=62 | St HR Mon 60, n=69 | St HR Mon 64, n=49 | St HR Mon 68, n=45 | St HR Mon 72, n=56 | St HR Mon 76, n=30 | St HR Mon 80, n=23 | St HR Mon 84, n=35 | St HR Mon 88, n=17 | St HR Mon 92, n=16 | St HR Mon 96, n=19 | St HR Mon 100, n=7 | St HR Mon 104, n=1 | St HR Mon 108, n=10 |
---|
Overall Study | -1.0 | -0.7 | -0.2 | -1.0 | -0.1 | 1.1 | 1.1 | -0.1 | -0.8 | 0.4 | -1.7 | -0.6 | -2.8 | -2.1 | -1.5 | -1.8 | -1.2 | -2.1 | 1.2 | -1.9 | -1.6 | -2.2 | -2.4 | 1.5 | -2.7 | -1.0 | -8.3 | -6.0 | -3.4 | 0.7 | 1.0 | 1.6 | 1.1 | 2.3 | 2.5 | 0.2 | 2.6 | -0.8 | 1.7 | -0.4 | 0.4 | -0.3 | -1.9 | -0.3 | 1.3 | -0.2 | 1.3 | 4.1 | 0.4 | 1.9 | 3.0 | 0.2 | 3.6 | 3.1 | 3.2 | 2.6 | 0.0 | -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
Intervention | 10^12 cells/Liter(L) (Mean) |
---|
| RBC, Mon 1, n=169 | RBC, Mon 2, n=15 | RBC, Mon 3, n=154 | RBC, Mon 4, n=26 | RBC, Mon 6, n=137 | RBC, Mon 8, n=43 | RBC, Mon 9, n=122 | RBC, Mon 10, n=55 | RBC, Mon 12, n=167 | RBC, Mon 16, n=99 | RBC, Mon 20, n=96 | RBC, Mon 24, n=110 | RBC, Mon 28, n=85 | RBC, Mon 32, n=86 | RBC, Mon 36, n=91 | RBC, Mon 40, n=78 | RBC, Mon 44, n=74 | RBC, Mon 48, n=79 | RBC, Mon 52, n=68 | RBC, Mon 56, n=63 | RBC, Mon 60, n=71 | RBC, Mon 64, n=49 | RBC, Mon 68, n=44 | RBC, Mon 72, n=53 | RBC, Mon 76, n=31 | RBC, Mon 80, n=24 | RBC, Mon 84, n=35 | RBC, Mon 88, n=16 | RBC, Mon 92, n=15 | RBC, Mon 96, n=19 | RBC, Mon 100, n=7 | RBC, Mon 104, n=1 | RBC, Mon 108, n=10 |
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Overall Study Arm | -0.09 | 0.01 | -0.06 | -0.16 | -0.04 | -0.03 | -0.06 | -0.01 | 0.00 | -0.04 | 0.01 | -0.01 | -0.04 | -0.03 | -0.11 | -0.11 | -0.09 | -0.16 | -0.08 | -0.13 | -0.14 | -0.10 | -0.06 | -0.09 | 0.00 | -0.03 | -0.00 | 0.03 | 0.14 | 0.04 | 0.23 | 0.30 | 0.15 |
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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
Intervention | Scores on a scale (Mean) |
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| AUA, Mon 1, n=162 | AUA, Mon 3, n=151 | AUA, Mon 12, n=153 | AUA, Mon 24, n=79 | AUA, Mon 36, n=81 | AUA, Mon 48, n=79 | AUA, Mon 60, n=65 | AUA, Mon 72, n=49 | AUA, Mon 84, n=33 | AUA, Mon 96, n=19 | AUA, Mon 108, n=10 |
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Overall Study | -0.2 | -0.0 | 0.2 | -0.1 | 0.0 | 0.5 | 0.6 | 0.4 | 1.0 | -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
Intervention | Milliliter (mL) (Mean) |
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| PVR, Mon 1, n=152 | PVR, Mon 3, n=146 | PVR, Mon 12, n=144 | PVR, Mon 24, n=75 | PVR, Mon 36, n=84 | PVR, Mon 48, n=77 | PVR, Mon 60, n=65 | PVR, Mon 72, n=48 | PVR, Mon 84, n=31 | PVR, Mon 96, n=19 | PVR, Mon 108, n=10 |
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Overall Study | 6.5 | 5.8 | -2.8 | 11.6 | 13.6 | 8.8 | 20.1 | 17.2 | 40.0 | 8.7 | 17.4 |
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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
Intervention | Scores on a scale (Mean) |
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| Mon 3, n= 133 | Mon 6, n= 130 | Mon 9, n= 114 | Mon 12, n= 156 | Mon 24, n= 102 | Mon 36, n= 81 | Mon 48, n= 74 | Mon 60, n= 60 | Mon 72, n= 49 | Mon 84, n= 28 | Mon 96, n= 18 | Mon 108, n= 11 |
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Overall Study | -2 | -2.95 | -1.65 | -2.77 | -3.13 | -2.43 | -1.05 | -0.41 | -0.35 | 0.19 | -0.25 | 1.55 |
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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
Intervention | Seconds (sec) (Mean) |
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| RR interval, Mon 1, n=174 | RR interval, Mon 3, n=159 | RR interval, Mon 6, n=142 | RR interval, Mon 9, n=124 | RR interval, Mon 12, n=172 | RR interval, Mon 24, n=112 | RR interval, Mon 36, n=92 | RR interval, Mon 48, n=81 | RR interval, Mon 60, n=71 | RR interval, Mon 72, n=55 | RR interval, Mon 84, n=36 | RR interval, Mon 96, n=19 | RR interval, Mon 108, n=10 |
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Overall Study Arm | 0.0195 | 0.0029 | -0.0007 | 0.0103 | -0.0015 | -0.0119 | 0.0144 | 0.0145 | 0.0098 | 0.0251 | 0.0285 | -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
Intervention | Milliseconds (msec) (Mean) |
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| QTcB, Mon 1, n=172 | QTcB, Mon 3, n=157 | QTcB, Mon 6, n=139 | QTcB, Mon 9, n=121 | QTcB, Mon 12, n=168 | QTcB, Mon 24, n=109 | QTcB, Mon 36, n=89 | QTcB, Mon 48, n=80 | QTcB, Mon 60, n=70 | QTcB, Mon 72, n=54 | QTcB, Mon 84, n=36 | QTcB, Mon 96, n=19 | QTcB, Mon 108, n=10 | QTcF, Mon 1, n=172 | QTcF, Mon 3, n=157 | QTcF, Mon 6, n=139 | QTcF, Mon 9, n=121 | QTcF, Mon 12, n=168 | QTcF, Mon 24, n=109 | QTcF, Mon 36, n=89 | QTcF, Mon 48, n=80 | QTcF, Mon 60, n=70 | QTcF, Mon 72, n=54 | QTcF, Mon 84, n=36 | QTcF, Mon 96, n=19 | QTcF, Mon 108, n=10 | PR interval, Mon 1, n=173 | PR interval, Mon 3, n=158 | PR interval, Mon 6, n=139 | PR interval, Mon 9, n=123 | PR interval, Mon 12, n=168 | PR interval, Mon 24, n=110 | PR interval, Mon 36, n=89 | PR interval, Mon 48, n=80 | PR interval, Mon 60, n=71 | PR interval, Mon 72, n=53 | PR interval, Mon 84, n=36 | PR interval, Mon 96, n=19 | PR interval, Mon 108, n=10 | QRS duration, Mon 1, n=174 | QRS duration, Mon 3, n=159 | QRS duration, Mon 6, n=142 | QRS duration, Mon 9, n=124 | QRS duration, Mon 12, n=171 | QRS duration, Mon 24, n=112 | QRS duration, Mon 36, n=90 | QRS duration, Mon 48, n=81 | QRS duration, Mon 60, n=70 | QRS duration, Mon 72, n=55 | QRS duration, Mon 84, n=36 | QRS duration, Mon 96, n=19 | QRS duration, Mon 108, n=10 | uQT, Mon 1, n=172 | uQT, Mon 3, n=157 | uQT, Mon 6, n=139 | uQT, Mon 9, n=121 | uQT, Mon 12, n=168 | uQT, Mon 24, n=109 | uQT, Mon 36, n=89 | uQT, Mon 48, n=80 | uQT, Mon 60, n=70 | uQT, Mon 72, n=54 | uQT, Mon 84, n=36 | uQT, Mon 96, n=19 | uQT, Mon 108, n=10 |
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Overall Study Arm | 3.3 | 5.8 | 1.5 | 2.2 | 5.7 | 5.9 | 3.7 | 5.4 | 5.1 | 5.5 | 8.1 | 11.0 | -3.7 | 4.7 | 6.0 | 1.4 | 2.9 | 5.5 | 4.7 | 4.3 | 5.9 | 5.9 | 7.2 | 9.3 | 8.9 | -5.7 | -0.8 | 1.0 | 0.0 | -1.4 | -1.0 | -3.1 | -0.3 | 0.3 | 2.5 | 2.2 | 4.3 | -2.4 | 0.0 | 0.4 | -0.2 | -0.2 | 0.4 | -0.0 | 0.7 | 1.6 | 4.0 | 3.9 | 6.2 | 4.2 | 3.8 | 3.7 | 7.5 | 6.4 | 1.4 | 4.3 | 5.1 | 2.8 | 5.5 | 7.2 | 7.3 | 11.0 | 12.5 | 5.4 | -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
Intervention | pH units (Mean) |
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| UpH, Mon 1, n=166 | UpH, Mon 3, n=157 | UpH, Mon 6, n=137 | UpH, Mon 9, n=121 | UpH, Mon 12, n=170 | UpH, Mon 16, n=100 | UpH, Mon 20, n=97 | UpH, Mon 24, n=109 | UpH, Mon 28, n=86 | UpH, Mon 32, n=82 | UpH, Mon 36, n=89 | UpH, Mon 40, n=76 | UpH, Mon 44, n=72 | UpH, Mon 48, n=80 | UpH, Mon 52, n=67 | UpH, Mon 56, n=62 | UpH, Mon 60, n=68 | UpH, Mon 64, n=49 | UpH, Mon 68, n=42 | UpH, Mon 72, n=53 | UpH, Mon 76, n=31 | UpH, Mon 80, n=23 | UpH, Mon 84, n=36 | UpH, Mon 88, n=17 | UpH, Mon 92, n=16 | UpH, Mon 96, n=19 | UpH, Mon 100, n=7 | UpH, Mon 104, n=1 | UpH, Mon 108, n=10 |
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Overall Study | -0.13 | -0.18 | -0.13 | -0.17 | -0.11 | -0.05 | -0.20 | -0.09 | -0.01 | -0.10 | 0.12 | 0.09 | 0.12 | 0.19 | 0.17 | 0.06 | 0.24 | 0.19 | 0.12 | 0.16 | 0.13 | 0.24 | 0.00 | 0.21 | 0.28 | 0.26 | 0.14 | 0.50 | 0.65 |
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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
Intervention | Dimensionless unit (Mean) |
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| USG, Mon 1, n=166 | USG, Mon 3, n=157 | USG, Mon 6, n=137 | USG, Mon 9, n=121 | USG, Mon 12, n=170 | USG, Mon 16, n=100 | USG, Mon 20, n=97 | USG, Mon 24, n=109 | USG, Mon 28, n=86 | USG, Mon 32, n=82 | USG, Mon 36, n=89 | USG, Mon 40, n=76 | USG, Mon 44, n=72 | USG, Mon 48, n=80 | USG, Mon 52, n=67 | USG, Mon 56, n=62 | USG, Mon 60, n=68 | USG, Mon 64, n=49 | USG, Mon 68, n=42 | USG, Mon 72, n=53 | USG, Mon 76, n=31 | USG, Mon 80, n=23 | USG, Mon 84, n=35 | USG, Mon 88, n=17 | USG, Mon 92, n=16 | USG, Mon 96, n=19 | USG, Mon 100, n=7 | USG, Mon 104, n=1 | USG, Mon 108, n=10 |
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Overall Study | -0.0018 | -0.0016 | 0.0002 | 0.0002 | -0.0000 | 0.0006 | 0.0008 | -0.0012 | -0.0003 | -0.0006 | -0.0024 | -0.0005 | -0.0007 | -0.0015 | 0.0002 | -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
Intervention | Kilograms (Mean) |
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| Weight, Mon 1, n=172 | Weight, Mon 3, n=159 | Weight, Mon 6, n=143 | Weight, Mon 9, n=123 | Weight, Mon 12, n=171 | Weight, Mon 16, n=104 | Weight, Mon 20, n=101 | Weight, Mon 24, n=111 | Weight, Mon 28, n=88 | Weight, Mon 32, n=85 | Weight, Mon 36, n=92 | Weight, Mon 40, n=78 | Weight, Mon 44, n=76 | Weight, Mon 48, n=82 | Weight, Mon 52, n=68 | Weight, Mon 56, n=62 | Weight, Mon 60, n=69 | Weight, Mon 64, n=49 | Weight, Mon 68, n=44 | Weight, Mon 72, n=57 | Weight, Mon 76, n=31 | Weight, Mon 80, n=24 | Weight, Mon 84, n=36 | Weight, Mon 88, n=17 | Weight, Mon 92, n=16 | Weight, Mon 96, n=19 | Weight, Mon 100, n=7 | Weight, Mon 104, n=1 | Weight, Mon 108, n=10 |
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Overall Study | 1.94 | 1.85 | 1.68 | 1.57 | 1.31 | 2.17 | 1.62 | 1.21 | 0.35 | 0.07 | 0.61 | 0.84 | 0.88 | 0.73 | 1.10 | 1.28 | 0.94 | 2.13 | 2.77 | 0.85 | 3.30 | 1.48 | 2.47 | 1.45 | 1.64 | 0.48 | 4.31 | 2.10 | 3.18 |
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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
Intervention | Percentage Probability of d/c (Number) |
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| Day 0,n= 181 | Day 2,n= 180 | Day 6,n= 179 | Day 8,n= 178 | Day 12,n= 177 | Day 13,n= 176 | Day 18,n= 175 | Day 20,n= 174 | Day 21,n= 173 | Day 26,n= 172 | Day 27,n= 170 | Day 28,n= 169 | Day 29,n= 168 | Day 30,n= 167 | Day 32,n= 166 | Day 33,n= 164 | Day 39,n= 163 | Day 50,n= 162 | Day 52,n= 161 | Day 55,n= 160 | Day 67,n= 158 | Day 85,n= 157 | Day 89,n= 155 | Day 91,n= 153 | Day 93,n= 152 | Day 96,n= 151 | Day 109,n= 150 | Day 118,n= 149 | Day 119,n= 148 | Day 124,n= 147 | Day 134,n= 146 | Day 135,n= 145 | Day 140,n= 144 | Day 144,n= 143 | Day 166,n= 142 | Day 167,n= 141 | Day 175,n= 140 | Day 179,n= 139 | Day 180,n= 138 | Day 181,n= 137 | Day 182,n= 135 | Day 185,n= 134 | Day 188,n= 133 | Day 207,n= 132 | Day 210,n= 131 | Day 211,n= 130 | Day 213,n= 129 | Day 216,n= 128 | Day 224,n= 127 | Day 231,n= 126 | Day 237,n= 125 | Day 240,n= 124 | Day 253,n= 123 | Day 271,n= 122 | Day 278,n= 121 | Day 280,n= 120 | Day 281,n= 119 | Day 282,n= 118 | Day 303,n= 117 | Day 315,n= 116 | Day 336,n= 114 | Day 338,n= 113 | Day 358,n= 112 | Day 361,n= 111 | Day 362,n= 110 | Day 372,n= 109 | Day 377,n= 108 | Day 392,n= 107 | Day 407,n= 106 | Day 413,n= 105 | Day 477,n= 104 | Day 479,n= 103 | Day 483,n= 102 | Day 489,n= 101 | Day 535,n= 100 | Day 593,n= 99 | Day 602,n= 98 | Day 603,n= 97 | Day 606,n= 96 | Day 609,n= 95 | Day 660,n= 94 | Day 685,n= 93 | Day 722,n= 92 | Day 783,n= 91 | Day 821,n= 90 | Day 843,n= 88 | Day 848,n= 87 | Day 881,n= 86 | Day 959,n= 85 | Day 1076,n= 84 | Day 1080,n= 83 | Day 1084,n= 82 | Day 1090,n= 81 | Day 1119,n= 80 | Day 1146,n= 79 | Day 1196,n= 78 | Day 1210,n= 77 | Day 1225,n= 76 | Day 1322,n= 75 | Day 1326,n= 74 | Day 1338,n= 73 | Day 1339,n= 72 | Day 1407,n= 71 | Day 1429,n= 70 | Day 1520,n= 69 | Day 1561,n= 68 | Day 1563,n= 67 | Day 1619,n= 66 | Day 1645,n= 65 | Day 1655,n= 64 | Day 1656,n= 63 | Day 1673,n= 62 | Day 1676,n= 61 | Day 1686,n= 60 | Day 1737,n= 59 | Day 1780,n= 58 | Day 1800,n= 57 | Day 1811,n= 56 | Day 1813,n= 55 | Day 1862,n= 54 | Day 1885,n= 53 | Day 1911,n= 52 | Day 1926,n= 51 | Day 1933,n= 50 | Day 1952,n= 49 | Day 1989,n= 48 | Day 1994,n= 47 | Day 2008,n= 46 | Day 2038,n= 45 | Day 2044,n= 44 | Day 2051,n= 43 | Day 2073,n= 42 | Day 2109,n= 41 | Day 2111,n= 40 | Day 2139,n= 39 | Day 2157,n= 38 | Day 2161,n= 37 | Day 2164,n= 36 | Day 2170,n= 35 | Day 2228,n= 34 | Day 2234,n= 33 | Day 2248,n= 32 | Day 2274,n= 31 | Day 2278,n= 30 | Day 2282,n= 28 | Day 2290,n= 27 | Day 2294,n= 26 | Day 2297,n= 25 | Day 2301,n= 24 | Day 2337,n= 23 | Day 2393,n= 22 | Day 2523,n= 21 | Day 2527,n= 20 | Day 2528,n= 19 | Day 2535,n= 18 | Day 2646,n= 16 | Day 2702,n= 15 | Day 2735,n= 14 | Day 2768,n= 13 | Day 2792,n= 12 | Day 2795,n= 11 | Day 2833,n= 10 | Day 2848,n= 9 | Day 2871,n= 8 | Day 2886,n= 7 | Day 3001,n= 6 | Day 3004,n= 5 | Day 3023,n= 4 | Day 3091,n= 3 | Day 3092,n= 2 | Day 3101,n= 1 | Day 3186,n= 0 |
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Overall Study | 0.0 | 0.6 | 1.1 | 1.7 | 2.2 | 2.8 | 3.3 | 3.9 | 4.4 | 5.0 | 6.1 | 6.6 | 7.2 | 7.7 | 8.3 | 9.4 | 9.9 | 10.5 | 11.0 | 11.6 | 12.7 | 13.3 | 14.4 | 15.5 | 16.0 | 16.6 | 17.1 | 17.7 | 18.2 | 18.8 | 19.3 | 19.9 | 20.4 | 21.0 | 21.5 | 22.1 | 22.7 | 23.2 | 23.8 | 24.3 | 25.4 | 26.0 | 26.5 | 27.1 | 27.6 | 28.2 | 28.7 | 29.3 | 29.8 | 30.4 | 30.9 | 31.5 | 32.0 | 32.6 | 33.1 | 33.7 | 34.3 | 34.8 | 35.4 | 35.9 | 37.0 | 37.6 | 38.1 | 38.7 | 39.2 | 39.8 | 40.3 | 40.9 | 41.4 | 42.0 | 42.5 | 43.1 | 43.6 | 44.2 | 44.8 | 45.3 | 45.9 | 46.4 | 47.0 | 47.5 | 48.1 | 48.6 | 49.2 | 49.7 | 50.3 | 51.4 | 51.9 | 52.5 | 53.0 | 53.6 | 54.1 | 54.7 | 55.2 | 55.8 | 56.4 | 56.9 | 57.5 | 58.0 | 58.6 | 59.1 | 59.7 | 60.2 | 60.8 | 61.3 | 61.9 | 62.4 | 63.0 | 63.0 | 63.0 | 63.0 | 63.0 | 63.6 | 64.2 | 64.7 | 64.7 | 64.7 | 65.4 | 66.0 | 66.6 | 66.6 | 67.2 | 67.2 | 67.2 | 67.2 | 67.8 | 67.8 | 68.5 | 68.5 | 68.5 | 69.2 | 69.9 | 69.9 | 69.9 | 69.9 | 69.9 | 69.9 | 70.7 | 71.5 | 72.3 | 72.3 | 72.3 | 72.3 | 73.2 | 73.2 | 74.9 | 75.8 | 76.7 | 77.6 | 78.5 | 79.4 | 80.3 | 81.2 | 82.1 | 83.0 | 83.9 | 85.7 | 86.6 | 87.5 | 88.4 | 89.3 | 90.2 | 91.1 | 91.9 | 92.8 | 93.7 | 94.6 | 95.5 | 96.4 | 97.3 | 98.2 | 99.1 | 100.0 |
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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
Intervention | Participants (Number) |
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| Any abnormal dermatologic discoloration | Abnormal discoloration of skin | Abnormal discoloration of lips | Abnormal discoloration of nails | Abnormal discoloration of mucosa | Abnormal discoloration of sun-exposed tissue | Abnormal discoloration of non su-exposed tissue |
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Overall Study | 23 | 15 | 16 | 21 | 17 | 22 | 18 |
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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
Intervention | Participants (Number) |
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| Baseline, n=181 | Mon 12, n=169 | Mon 24, n=113 | Mon 36, n=92 | Mon 48, n=82 | Mon 60, 69 | Mon 72, n=56 | Mon 84, n=36 | Mon 96, n=19 | Mon 108, n=10 |
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Overall Study Arm | 59 | 49 | 34 | 27 | 25 | 32 | 31 | 25 | 10 | 5 |
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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
Intervention | Participants (Number) |
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| Baseline, n= 173, AbNCS | Baseline, n= 173, AbCS | Mon 1, n= 173, AbNCS | Mon 1, n= 173, AbCS | Mon 3, n= 159, AbNCS | Mon 3, n= 159, AbCS | Mon 6, n= 141, AbNCS | Mon 6, n= 141, AbCS | Mon 9, n= 125, AbNCS | Mon 9, n= 125, AbCS | Mon 12, n= 171, AbNCS | Mon 12, n= 171, AbCS | Mon 16, n= 104, AbNCS | Mon 16, n= 104, AbCS | Mon 20, n= 98, AbNCS | Mon 20, n= 98, AbCS | Mon 24, n= 113, AbNCS | Mon 24, n= 113, AbCS | Mon 28, n= 87, AbNCS | Mon 28, n= 87, AbCS | Mon 32, n= 86, AbNCS | Mon 32, n= 86, AbCS | Mon 36, n= 92, AbNCS | Mon 36, n= 92, AbCS | Mon 40, n= 78, AbNCS | Mon 40, n= 78, AbCS | Mon 44, n= 76, AbNCS | Mon 44, n= 76, AbCS | Mon 48, n= 82, AbNCS | Mon 48, n= 82, AbCS | Mon 52, n= 67, AbNCS | Mon 52, n= 67, AbCS | Mon 56, n= 63, AbNCS | Mon 56, n= 63, AbCS | Mon 60, n= 68, AbNCS | Mon 60, n= 68, AbCS | Mon 64, n= 50, AbNCS | Mon 64, n= 50, AbCS | Mon 68, n= 44, AbNCS | Mon 68, n= 44, AbCS | Mon 72, n= 56, AbNCS | Mon 72, n= 56, AbCS | Mon 76, n= 31, AbNCS | Mon 76, n= 31, AbCS | Mon 80, n= 24, AbNCS | Mon 80, n= 24, AbCS | Mon 84, n= 36, AbNCS | Mon 84, n= 36, AbCS | Mon 88, n= 17, AbNCS | Mon 88, n= 17, AbCS | Mon 92, n= 16, AbNCS | Mon 92, n= 16, AbCS | Mon 96, n= 19, AbNCS | Mon 96, n= 19, AbCS | Mon 100, n= 7, AbNCS | Mon 100, n= 7, AbCS | Mon 104, n= 1, AbNCS | Mon 104, n= 1, AbCS | Mon 108, n= 10, AbNCS | Mon 108, n= 10, AbCS |
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Overall Study | 60 | 11 | 49 | 17 | 42 | 9 | 35 | 8 | 32 | 9 | 56 | 13 | 23 | 10 | 28 | 6 | 35 | 6 | 23 | 6 | 19 | 5 | 28 | 6 | 22 | 8 | 25 | 3 | 25 | 6 | 19 | 4 | 19 | 4 | 27 | 3 | 21 | 1 | 15 | 0 | 20 | 4 | 11 | 0 | 7 | 0 | 14 | 0 | 0 | 1 | 2 | 1 | 4 | 0 | 2 | 0 | 1 | 0 | 2 | 0 |
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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
Intervention | Participants (Number) |
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| Retinal pigmentary abnormality | Pigmentary abnormality of macula | Pigmentary abnormality of peripheral retina | Non-retinal ocular pigmentary abnormality |
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Retigabine SFUCP | 1 | 1 | 3 | 4 |
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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
Intervention | Participants (Number) |
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| Any Treatment-emergent SAE | Any Treatment-emergent AE |
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Overall Study | 48 | 173 |
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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
Intervention | Days (Median) |
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| Retinal Pigmentary Abnormality, n=1 | Pigmentary Abnormality of Macula, n=1 | Pigmentary Abnormality of Peripheral Retina, n=3 | Non-Retinal Ocular Pigmentary Abnormality, n=4 |
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Retigabine SFUCP | 317.0 | 163.0 | 317.0 | 180.0 |
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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
Intervention | Days (Median) |
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| All, n=1 | Skin, n=5 | Lips, n=4 | Nails,n=7 | Mucosa, n=3 |
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Retigabine SFUCP | 439.0 | 347.0 | 284.5 | 377.0 | 468.0 |
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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
Intervention | Percent change (Mean) |
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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
Intervention | Percentage of days (Mean) |
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Overall Study | 75.7 |
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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
Intervention | Millimeter of mercury (mmHg) (Mean) |
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| Su DBP Mon 1, n=173 | Su DBP Mon 3, n=159 | Su DBP Mon 6, n=143 | Su DBP Mon 9, n=125 | Su DBP Mon 12, n=173 | Su DBP Mon 16, n=104 | Su DBP Mon 20, n=100 | Su DBP Mon 24, n=112 | Su DBP Mon 28, n=88 | Su DBP Mon 32, n=85 | Su DBP Mon 36, n=92 | Su DBP Mon 40, n=78 | Su DBP Mon 44, n=76 | Su DBP Mon 48, n=82 | Su DBP Mon 52, n=68 | Su DBP Mon 56, n=63 | Su DBP Mon 60, n=70 | Su DBP Mon 64, n=50 | Su DBP Mon 68, n=45 | Su DBP Mon 72, n=57 | Su DBP Mon 76, n=31 | Su DBP Mon 80, n=24 | Su DBP Mon 84, n=36 | Su DBP Mon 88, n=17 | Su DBP Mon 92, n=16 | Su DBP Mon 96, n=19 | Su DBP Mon 100, n=7 | Su DBP Mon 104, n=1 | Su DBP Mon 108, n=10 | St DBP Mon 1, n=173 | St DBP Mon 3, n=159 | St DBP Mon 6, n=143 | St DBP Mon 9, n=125 | St DBP Mon 12, n=170 | St DBP Mon 16, n=104 | St DBP Mon 20, n=100 | St DBP Mon 24, n=110 | St DBP Mon 28, n=87 | St DBP Mon 32, n=84 | St DBP Mon 36, n=91 | St DBP Mon 40, n=77 | St DBP Mon 44, n=75 | St DBP Mon 48, n=81 | St DBP Mon 52, n=67 | St DBP Mon 56, n=62 | St DBP Mon 60, n=69 | St DBP Mon 64, n=49 | St DBP Mon 68, n=45 | St DBP Mon 72, n=56 | St DBP Mon 76, n=30 | St DBP Mon 80, n=23 | St DBP Mon 84, n=34 | St DBP Mon 88, n=17 | St DBP Mon 92, n=16 | St DBP Mon 96, n=19 | St DBP Mon 100, n=7 | St DBP Mon 104, n=1 | St DBP Mon 108, n=10 | Su SBP Mon 1, n=173 | Su SBP Mon 3, n=159 | Su SBP Mon 6, n=143 | Su SBP Mon 9, n=125 | Su SBP Mon 12, n=173 | Su SBP Mon 16, n=104 | Su SBP Mon 20, n=100 | Su SBP Mon 24, n=112 | Su SBP Mon 28, n=88 | Su SBP Mon 32, n=85 | Su SBP Mon 36, n=92 | Su SBP Mon 40, n=78 | Su SBP Mon 44, n=76 | Su SBP Mon 48, n=82 | Su SBP Mon 52, n=68 | Su SBP Mon 56, n=63 | Su SBP Mon 60, n=70 | Su SBP Mon 64, n=50 | Su SBP Mon 68, n=45 | Su SBP Mon 72, n=57 | Su SBP Mon 76, n=31 | Su SBP Mon 80, n=24 | Su SBP Mon 84, n=36 | Su SBP Mon 88, n=17 | Su SBP Mon 92, n=16 | Su SBP Mon 96, n=19 | Su SBP Mon 100, n=7 | Su SBP Mon 104, n=1 | Su SBP Mon 108, n=10 | St SBP Mon 1, n=173 | St SBP Mon 3, n=159 | St SBP Mon 6, n=143 | St SBP Mon 9, n=125 | St SBP Mon 12, n=170 | St SBP Mon 16, n=104 | St SBP Mon 20, n=100 | St SBP Mon 24, n=110 | St SBP Mon 28, n=87 | St SBP Mon 32, n=84 | St SBP Mon 36, n=91 | St SBP Mon 40, n=77 | St SBP Mon 44, n=75 | St SBP Mon 48, n=81 | St SBP Mon 52, n=67 | St SBP Mon 56, n=62 | St SBP Mon 60, n=69 | St SBP Mon 64, n=49 | St SBP Mon 68, n=45 | St SBP Mon 72, n=56 | St SBP Mon 76, n=30 | St SBP Mon 80, n=23 | St SBP Mon 84, n=34 | St SBP Mon 88, n=17 | St SBP Mon 92, n=16 | St SBP Mon 96, n=19 | St SBP Mon 100, n=7 | St SBP Mon 104, n=1 | St SBP Mon 108, n=10 |
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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 | -1.2 | 0.7 | -0.3 | -0.8 | -1.7 | -1.1 | 0.2 | -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 | -1.0 | 0.5 | -1.0 | 0.9 | -0.7 | -0.6 | -0.6 | 0.1 | 1.0 | -1.0 | -1.9 | -2.1 | -2.9 | 0.5 | -2.4 | -2.0 | -0.6 | 0.6 | -3.1 | 2.3 | -4.9 | -20.0 | -4.5 | -1.1 | 0.3 | -0.7 | -0.4 | 0.4 | -2.2 | -0.7 | 0.5 | -0.1 | 0.3 | 0.3 | -0.8 | 0.3 | 2.6 | 3.3 | 1.3 | 0.7 | 0.1 | -0.2 | 0.8 | -1.2 | -2.6 | -3.0 | 0.6 | -0.9 | -0.9 | -3.6 | -20.0 | -4.4 | 0.3 | -1.6 | 0.1 | 0.2 | 1.4 | 0.1 | 2.1 | 3.8 | 1.6 | 3.1 | 1.7 | 1.7 | 2.7 | 3.3 | 3.9 | 2.7 | 2.1 | 2.4 | -0.3 | 2.3 | -4.5 | -1.1 | -1.9 | 2.1 | -4.9 | 0.5 | -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
Intervention | Degree Celsius (Mean) |
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| Temperature, Mon 1, n=174 | Temperature, Mon 3, n=158 | Temperature, Mon 6, n=142 | Temperature, Mon 9, n=124 | Temperature, Mon 12, n=172 | Temperature, Mon 16, n=102 | Temperature, Mon 20, n=98 | Temperature, Mon 24, n=110 | Temperature, Mon 28, n=86 | Temperature, Mon 32, n=85 | Temperature, Mon 36, n=92 | Temperature, Mon 40, n=77 | Temperature, Mon 44, n=76 | Temperature, Mon 48, n=82 | Temperature, Mon 52, n=68 | Temperature, Mon 56, n=63 | Temperature, Mon 60, n=70 | Temperature, Mon 64, n=48 | Temperature, Mon 68, n=45 | Temperature, Mon 72, n=57 | Temperature, Mon 76, n=31 | Temperature, Mon 80, n=24 | Temperature, Mon 84, n=36 | Temperature, Mon 88, n=17 | Temperature, Mon 92, n=16 | Temperature, Mon 96, n=19 | Temperature, Mon 100, n=7 | Temperature, Mon 104, n=1 | Temperature, Mon 108, n=10 |
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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 | -0.14 | 1.00 | -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
Intervention | Grams per liter (g/L) (Mean) |
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| TP Mon 1, n=170 | TP Mon 3, n=152 | TP Mon 6, n=137 | TP Mon 9, n=123 | TP Mon 12, n=169 | TP Mon 16, n=100 | TP Mon 20, n=97 | TP Mon 24, n=109 | TP Mon 28, n=87 | TP Mon 32, n=85 | TP Mon 36, n=89 | TP Mon 40, n=77 | TP Mon 44, n=73 | TP Mon 48, n=79 | TP Mon 52, n=67 | TP Mon 56, n=62 | TP Mon 60, n=69 | TP Mon 64, n=49 | TP Mon 68, n=41 | TP Mon 72, n=51 | TP Mon 76, n=30 | TP Mon 80, n=22 | TP Mon 84, n=34 | TP Mon 88, n=15 | TP Mon 92, n=15 | TP Mon 96, n=18 | TP Mon 100, n=6 | TP Mon 104, n=1 | TP Mon 108, n=9 |
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Overall Study | -1.1 | -0.5 | -1.0 | -0.8 | 0.2 | 0.3 | 0.8 | 0.2 | -0.2 | 0.1 | -1.1 | -1.1 | -0.1 | -1.3 | -0.7 | -1.1 | -0.7 | -0.2 | 0.6 | -0.7 | 0.8 | 0.3 | 0.7 | 0.4 | 1.0 | 0.9 | 2.0 | 7.0 | 2.1 |
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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
Intervention | Micromole per Liter (umol/L) (Mean) |
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| Creatinine, Mon 1, n=170 | Creatinine, Mon 3, n=149 | Creatinine, Mon 6, n=133 | Creatinine, Mon 9, n=120 | Creatinine, Mon 12, n=167 | Creatinine, Mon 16, n=100 | Creatinine, Mon 20, n=94 | Creatinine, Mon 24, n=105 | Creatinine, Mon 28, n=86 | Creatinine, Mon 32, n=84 | Creatinine, Mon 36, n=88 | Creatinine, Mon 40, n=75 | Creatinine, Mon 44, n=73 | Creatinine, Mon 48, n=79 | Creatinine, Mon 52, n=67 | Creatinine, Mon 56, n=62 | Creatinine, Mon 60, n=69 | Creatinine, Mon 64, n=49 | Creatinine, Mon 68, n=39 | Creatinine, Mon 72, n=51 | Creatinine, Mon 76, n=30 | Creatinine, Mon 80, n=22 | Creatinine, Mon 84, n=34 | Creatinine, Mon 88, n=15 | Creatinine, Mon 92, n=15 | Creatinine, Mon 96, n=18 | Creatinine, Mon 100, n=6 | Creatinine, Mon 104, n=1 | Creatinine, Mon 108, n=9 | TB Mon 1, n=167 | TB Mon 3, n=150 | TB Mon 6, n=134 | TB Mon 9, n=120 | TB Mon 12, n=167 | TB Mon 16, n=100 | TB Mon 20, n=97 | TB Mon 24, n=109 | TB Mon 28, n=87 | TB Mon 32, n=85 | TB Mon 36, n=89 | TB Mon 40, n=77 | TB Mon 44, n=73 | TB Mon 48, n=78 | TB Mon 52, n=67 | TB Mon 56, n=62 | TB Mon 60, n=68 | TB Mon 64, n=48 | TB Mon 68, n=41 | TB Mon 72, n=51 | TB Mon 76, n=29 | TB Mon 80, n=22 | TB Mon 84, n=34 | TB Mon 88, n=15 | TB Mon 92, n=15 | TB Mon 96, n=18 | TB Mon 100, n=6 | TB Mon 104, n=1 | TB Mon 108, n=9 | UA Mon 1, n=170 | UA Mon 3, n=152 | UA Mon 6, n=137 | UA Mon 9, n=123 | UA Mon 12, n=169 | UA Mon 16, n=100 | UA Mon 20, n=97 | UA Mon 24, n=109 | UA Mon 28, n=87 | UA Mon 32, n=85 | UA Mon 36, n=89 | UA Mon 40, n=77 | UA Mon 44, n=73 | UA Mon 48, n=79 | UA Mon 52, n=67 | UA Mon 56, n=62 | UA Mon 60, n=69 | UA Mon 64, n=49 | UA Mon 68, n=41 | UA Mon 72, n=51 | UA Mon 76, n=30 | UA Mon 80, n=22 | UA Mon 84, n=34 | UA Mon 88, n=15 | UA Mon 92, n=15 | UA Mon 96, n=18 | UA Mon 100, n=6 | UA Mon 104, n=1 | UA Mon 108, n=9 |
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Overall Study Arm | 3 | 4 | 4.9 | 3.7 | 4.5 | 4.0 | 3.0 | 1.9 | -1.0 | 0.0 | -0.9 | 0.1 | -1.0 | -0.2 | 0.1 | 1.2 | -0.2 | 0.6 | 0.7 | 0.1 | 0.5 | 3.3 | 1.6 | 1.2 | 4.3 | 1.2 | 6.2 | 9.0 | 5.3 | 4.6 | 4.5 | 3.8 | 3.6 | 2.7 | 3.6 | 3.7 | 2.6 | 2.8 | 2.4 | 2.2 | 2.7 | 2.6 | 2.2 | 2.0 | 2.1 | 2.1 | 1.6 | 1.2 | 0.8 | 1.0 | 1.3 | -0.3 | 2.1 | 1.3 | -0.2 | 1.2 | 9.0 | -0.3 | 0.8 | 3.1 | 2.9 | 4.5 | 6.6 | 2.5 | 2.3 | 4.7 | 12.2 | 10.2 | 5.3 | 6.9 | 4.3 | 5.7 | 4.2 | 8.6 | 8.1 | 2.7 | 5.4 | 12.6 | 11.9 | 7.0 | 5.7 | 3.1 | -6.0 | 5.3 | 35.7 | 107.0 | 17.9 |
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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
Intervention | International units per litre (IU/L) (Mean) |
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| AP, Mon 1, n=151 | AP, Mon 3, n=136 | AP, Mon 6, n=122 | AP, Mon 9, n=108 | AP, Mon 12, n=149 | AP, Mon 16, n=87 | AP, Mon 20, n=85 | AP, Mon 24, n=95 | AP, Mon 28, n=75 | AP, Mon 32, n=73 | AP, Mon 36, n=77 | AP, Mon 40, n=67 | AP, Mon 44, n=63 | AP, Mon 48, n=70 | AP, Mon 52, n=59 | AP, Mon 56, n=54 | AP, Mon 60, n=61 | AP, Mon 64, n=44 | AP, Mon 68, n=36 | AP, Mon 72, n=46 | AP, Mon 76, n=26 | AP, Mon 80, n=21 | AP, Mon 84, n=30 | AP, Mon 88, n=15 | AP, Mon 92, n=15 | AP, Mon 96, n=18 | AP, Mon 100, n=6 | AP, Mon 104, n=1 | AP, Mon 108, n=9 | ALT, Mon 1, n=169 | ALT, Mon 3, n=152 | ALT, Mon 6, n=137 | ALT, Mon 9, n=122 | ALT, Mon 12, n=169 | ALT, Mon 16, n=100 | ALT, Mon 20, n=96 | ALT, Mon 24, n=108 | ALT, Mon 28, n=87 | ALT, Mon 32, n=85 | ALT, Mon 36, n=89 | ALT, Mon 40, n=77 | ALT, Mon 44, n=73 | ALT, Mon 48, n=78 | ALT, Mon 52, n=67 | ALT, Mon 56, n=62 | ALT, Mon 60, n=69 | ALT, Mon 64, n=48 | ALT, Mon 68, n=41 | ALT, Mon 72, n=51 | ALT, Mon 76, n=30 | ALT, Mon 80, n=22 | ALT, Mon 84, n=33 | ALT, Mon 88, n=15 | ALT, Mon 92, n=15 | ALT, Mon 96, n=18 | ALT, Mon 100, n=6 | ALT, Mon 104, n=1 | ALT, Mon 108, n=9 | AST, Mon 1, n=169 | AST, Mon 3, n=152 | AST, Mon 6, n=137 | AST, Mon 9, n=121 | AST, Mon 12, n=169 | AST, Mon 16, n=100 | AST, Mon 20, n=96 | AST, Mon 24, n=108 | AST, Mon 28, n=86 | AST, Mon 32, n=85 | AST, Mon 36, n=89 | AST, Mon 40, n=77 | AST, Mon 44, n=73 | AST, Mon 48, n=78 | AST, Mon 52, n=67 | AST, Mon 56, n=62 | AST, Mon 60, n=69 | AST, Mon 64, n=48 | AST, Mon 68, n=41 | AST, Mon 72, n=51 | AST, Mon 76, n=30 | AST, Mon 80, n=22 | AST, Mon 84, n=33 | AST, Mon 88, n=15 | AST, Mon 92, n=15 | AST, Mon 96, n=18 | AST, Mon 100, n=6 | AST, Mon 104, n=1 | AST, Mon 108, n=9 |
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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 | -12.3 | 11.0 | -14.2 | 3.1 | 4.0 | 1.2 | 5.2 | 4.5 | -0.3 | 1.1 | 3.0 | 2.2 | 2.0 | 1.7 | 2.5 | 4.1 | 3.0 | 2.3 | 1.4 | 1.0 | 0.2 | -0.5 | 0.4 | 0.6 | 0.4 | 1.1 | -1.3 | 2.1 | 2.2 | 0.8 | -6.0 | -1.3 | 2.9 | 3.2 | 1.7 | 6.0 | 3.9 | 2.1 | 2.9 | 4.1 | 4.3 | 5.6 | 3.9 | 5.0 | 4.6 | 4.7 | 6.0 | 4.3 | 5.4 | 3.8 | 5.3 | 5.1 | 4.9 | 4.6 | 5.6 | 2.9 | 3.3 | 3.1 | 3.7 | 2.0 | 1.8 |
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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
Intervention | Millimole per liter (mmol/L) (Mean) |
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| BUN, Mon 3, n=142 | BUN, Mon 6, n=130 | BUN, Mon 9, n=115 | BUN, Mon 12, n=156 | BUN, Mon 16, n=94 | BUN, Mon 20, n=92 | BUN, Mon 24, n=102 | BUN, Mon 28, n=82 | BUN, Mon 32, n=80 | BUN, Mon 36, n=85 | BUN, Mon 40, n=72 | BUN, Mon 44, n=69 | BUN, Mon 48, n=75 | BUN, Mon 52, n=62 | BUN, Mon 56, n=57 | BUN, Mon 60, n=64 | BUN, Mon 64, n=44 | BUN, Mon 68, n=37 | BUN, Mon 72, n=48 | BUN, Mon 76, n=27 | BUN, Mon 80, n=19 | BUN, Mon 84, n=30 | BUN, Mon 88, n=15 | BUN, Mon 92, n=15 | BUN, Mon 96, n=18 | BUN, Mon 100, n=6 | BUN, Mon 104, n=1 | BUN, Mon 108, n=9 | Ca, Mon 1, n=170 | Ca, Mon 3, n=152 | Ca, Mon 6, n=137 | Ca, Mon 9, n=123 | Ca, Mon 12, n=169 | Ca, Mon 16, n=100 | Ca, Mon 20, n=97 | Ca, Mon 24, n=109 | Ca, Mon 28, n=87 | Ca, Mon 32, n=85 | Ca, Mon 36, n=89 | Ca, Mon 40, n=77 | Ca, Mon 44, n=73 | Ca, Mon 48, n=80 | Ca, Mon 52, n=67 | Ca, Mon 56, n=62 | Ca, Mon 60, n=69 | Ca, Mon 64, n=49 | Ca, Mon 68, n=41 | Ca, Mon 72, n=51 | Ca, Mon 76, n=30 | Ca, Mon 80, n=22 | Ca, Mon 84, n=34 | Ca, Mon 88, n=15 | Ca, Mon 92, n=15 | Ca, Mon 96, n=18 | Ca, Mon 100, n=6 | Ca, Mon 104, n=1 | Ca, Mon 108, n=9 | Cho., Mon 3, n=151 | Cho., Mon 6, n=137 | Cho., Mon 9, n=122 | Cho., Mon 12, n=169 | Cho., Mon 16, n=100 | Cho., Mon 20, n=97 | Cho., Mon 24, n=109 | Cho., Mon 28, n=87 | Cho., Mon 32, n=85 | Cho., Mon 36, n=89 | Cho., Mon 40, n=77 | Cho., Mon 44, n=73 | Cho., Mon 48, n=79 | Cho., Mon 52, n=67 | Cho., Mon 56, n=62 | Cho., Mon 60, n=69 | Cho., Mon 64, n=49 | Cho., Mon 68, n=41 | Cho., Mon 72, n=51 | Cho., Mon 76, n=30 | Cho., Mon 80, n=22 | Cho., Mon 84, n=34 | Cho., Mon 88, n=15 | Cho., Mon 92, n=15 | Cho., Mon 96, n=18 | Cho., Mon 100, n=6 | Cho., Mon 104, n=1 | Cho., Mon 108, n=9 | NFG, Mon 1, n=170 | NFG, Mon 3, n=149 | NFG, Mon 6, n=133 | NFG, Mon 9, n=120 | NFG, Mon 12, n=166 | NFG, Mon 16, n=100 | NFG, Mon 20, n=94 | NFG, Mon 24, n=106 | NFG, Mon 28, n=86 | NFG, Mon 32, n=85 | NFG, Mon 36, n=89 | NFG, Mon 40, n=75 | NFG, Mon 44, n=72 | NFG, Mon 48, n=77 | NFG, Mon 52, n=67 | NFG, Mon 56, n=61 | NFG, Mon 60, n=69 | NFG, Mon 64, n=49 | NFG, Mon 68, n=39 | NFG, Mon 72, n=51 | NFG, Mon 76, n=30 | NFG, Mon 80, n=22 | NFG, Mon 84, n=34 | NFG, Mon 88, n=15 | NFG, Mon 92, n=15 | NFG, Mon 96, n=18 | NFG, Mon 100, n=6 | NFG, Mon 104, n=1 | NFG, Mon 108, n=9 | P, Mon 1, n=169 | P, Mon 3, n=148 | P, Mon 6, n=132 | P, Mon 9, n=119 | P, Mon 12, n=167 | P, Mon 16, n=100 | P, Mon 20, n=94 | P, Mon 24, n=105 | P, Mon 28, n=86 | P, Mon 32, n=84 | P, Mon 36, n=88 | P, Mon 40, n=75 | P, Mon 44, n=73 | P, Mon 48, n=78 | P, Mon 52, n=67 | P, Mon 56, n=62 | P, Mon 60, n=69 | P, Mon 64, n=49 | P, Mon 68, n=39 | P, Mon 72, n=51 | P, Mon 76, n=30 | P, Mon 80, n=22 | P, Mon 84, n=34 | P, Mon 88, n=15 | P, Mon 92, n=15 | P, Mon 96, n=18 | P, Mon 100, n=6 | P, Mon 104, n=1 | P, Mon 108, n=9 | Ka, Mon 1, n=169 | Ka, Mon 3, n=149 | Ka, Mon 6, n=132 | Ka, Mon 9, n=119 | Ka, Mon 12, n=167 | Ka, Mon 16, n=100 | Ka, Mon 20, n=93 | Ka, Mon 24, n=106 | Ka, Mon 28, n=86 | Ka, Mon 32, n=84 | Ka, Mon 36, n=88 | Ka, Mon 40, n=74 | Ka, Mon 44, n=74 | Ka, Mon 48, n=79 | Ka, Mon 52, n=67 | Ka, Mon 56, n=62 | Ka, Mon 60, n=69 | Ka, Mon 64, n=49 | Ka, Mon 68, n=40 | Ka, Mon 72, n=52 | Ka, Mon 76, n=30 | Ka, Mon 80, n=22 | Ka, Mon 84, n=34 | Ka, Mon 88, n=15 | Ka, Mon 92, n=15 | Ka, Mon 96, n=18 | Ka, Mon 100, n=6 | Ka, Mon 104, n=1 | Ka, Mon 108, n=9 | Na, Mon 1, n=170 | Na, Mon 3, n=153 | Na, Mon 6, n=137 | Na, Mon 9, n=123 | Na, Mon 12, n=170 | Na, Mon 16, n=100 | Na, Mon 20, n=97 | Na, Mon 24, n=110 | Na, Mon 28, n=87 | Na, Mon 32, n=85 | Na, Mon 36, n=89 | Na, Mon 40, n=77 | Na, Mon 44, n=74 | Na, Mon 48, n=80 | Na, Mon 52, n=67 | Na, Mon 56, n=62 | Na, Mon 60, n=69 | Na, Mon 64, n=49 | Na, Mon 68, n=42 | Na, Mon 72, n=52 | Na, Mon 76, n=30 | Na, Mon 80, n=22 | Na, Mon 84, n=34 | Na, Mon 88, n=15 | Na, Mon 92, n=15 | Na, Mon 96, n=18 | Na, Mon 100, n=6 | Na, Mon 104, n=1 | Na, Mon 108, n=9 | Urea, Mon 1, n=13 | Urea, Mon 3, n=10 | Urea, Mon 6, n=7 | Urea, Mon 9, n=8 | Urea, Mon 12, n=13 | Urea, Mon 16, n=6 | Urea, Mon 20, n=5 | Urea, Mon 24, n=8 | Urea, Mon 28, n=5 | Urea, Mon 32, n=5 | Urea, Mon 36, n=4 | Urea, Mon 40, n=5 | Urea, Mon 44, n=5 | Urea, Mon 48, n=5 | Urea, Mon 52, n=5 | Urea, Mon 56, n=5 | Urea, Mon 60, n=5 | Urea, Mon 64, n=5 | Urea, Mon 68, n=4 | Urea, Mon 72, n=3 | Urea, Mon 76, n=3 | Urea, Mon 80, n=3 | Urea, Mon 84, n=4 | Bicarbonate, Mon 1, n=169 | Bicarbonate, Mon 3, n=151 | Bicarbonate, Mon 6, n=136 | Bicarbonate, Mon 9, n=122 | Bicarbonate, Mon 12, n=169 | Bicarbonate, Mon 16, n=100 | Bicarbonate, Mon 20, n=97 | Bicarbonate, Mon 24, n=109 | Bicarbonate, Mon 28, n=87 | Bicarbonate, Mon 32, n=85 | Bicarbonate, Mon 36, n=89 | Bicarbonate, Mon 40, n=76 | Bicarbonate, Mon 44, n=73 | Bicarbonate, Mon 48, n=79 | Bicarbonate, Mon 52, n=66 | Bicarbonate, Mon 56, n=62 | Bicarbonate, Mon 60, n=69 | Bicarbonate, Mon 64, n=49 | Bicarbonate, Mon 68, n=42 | Bicarbonate, Mon 72, n=51 | Bicarbonate, Mon 76, n=30 | Bicarbonate, Mon 80, n=22 | Bicarbonate, Mon 84, n=34 | Bicarbonate, Mon 88, n=15 | Bicarbonate, Mon 92, n=15 | Bicarbonate, Mon 96, n=18 | Bicarbonate, Mon 100, n=6 | Bicarbonate, Mon 104, n=1 | Bicarbonate, Mon 108, n=9 | Cl, Mon 1, n=170 | Cl, Mon 3, n=153 | Cl, Mon 6, n=137 | Cl, Mon 9, n=123 | Cl, Mon 12, n=169 | Cl, Mon 16, n=100 | Cl, Mon 20, n=97 | Cl, Mon 24, n=110 | Cl, Mon 28, n=87 | Cl, Mon 32, n=85 | Cl, Mon 36, n=89 | Cl, Mon 40, n=77 | Cl, Mon 44, n=74 | Cl, Mon 48, n=80 | Cl, Mon 52, n=67 | Cl, Mon 56, n=61 | Cl, Mon 60, n=69 | Cl, Mon 64, n=49 | Cl, Mon 68, n=42 | Cl, Mon 72, n=52 | Cl, Mon 76, n=30 | Cl, Mon 80, n=22 | Cl, Mon 84, n=34 | Cl, Mon 88, n=15 | Cl, Mon 92, n=15 | Cl, Mon 96, n=18 | Cl, Mon 100, n=6 | Cl, Mon 104, n=1 | Cl, Mon 108, n=9 |
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Overall Study Arm | 0.843 | 0.917 | 0.823 | 0.717 | 0.973 | 1.060 | 0.809 | 0.876 | 0.942 | 0.958 | 1.135 | 0.844 | 0.952 | 1.071 | 1.022 | 1.100 | 0.991 | 1.148 | 1.087 | 1.257 | 0.939 | 0.929 | 0.881 | 1.332 | 0.916 | 1.248 | 1.430 | 0.183 | -0.034 | -0.013 | 0.012 | 0.020 | 0.024 | 0.042 | 0.052 | 0.049 | 0.034 | 0.032 | 0.032 | 0.030 | 0.040 | 0.054 | 0.047 | 0.055 | 0.061 | 0.056 | 0.083 | 0.053 | 0.097 | 0.069 | 0.106 | 0.071 | 0.116 | 0.106 | 0.148 | 0.170 | 0.139 | 0.075 | 0.069 | 0.177 | 0.222 | 0.310 | 0.304 | 0.260 | 0.261 | 0.261 | 0.212 | 0.200 | 0.348 | 0.170 | 0.299 | 0.305 | 0.360 | 0.256 | 0.352 | 0.216 | 0.555 | 0.442 | 0.459 | 0.408 | 0.526 | 0.352 | 0.483 | 0.160 | 0.278 | 0.11 | 0.20 | 0.18 | 0.38 | 0.20 | 0.18 | 0.26 | 0.13 | 0.22 | 0.16 | 0.19 | 0.20 | 0.02 | 0.27 | 0.05 | 0.14 | 0.19 | 0.21 | 0.32 | 0.24 | 0.17 | 0.15 | 0.23 | -0.09 | 0.14 | 0.22 | 0.25 | -0.50 | 0.21 | 0.014 | 0.001 | 0.020 | 0.021 | 0.007 | -0.010 | 0.003 | -0.021 | -0.020 | 0.019 | 0.004 | -0.005 | 0.018 | 0.019 | 0.018 | 0.010 | 0.071 | 0.027 | 0.007 | 0.029 | 0.038 | 0.107 | 0.046 | -0.004 | 0.058 | 0.026 | 0.143 | -0.090 | -0.068 | 0.02 | 0.04 | 0.03 | 0.08 | -0.03 | 0.02 | 0.10 | -0.00 | -0.01 | 0.01 | 0.04 | 0.00 | 0.16 | 0.12 | 0.20 | 0.08 | 0.13 | 0.19 | 0.28 | 0.24 | 0.25 | 0.35 | 0.24 | 0.38 | 0.55 | 0.41 | 0.32 | 1.10 | 0.51 | 1.5 | 1.4 | 1.8 | 1.5 | 1.1 | 1.3 | 1.1 | 0.8 | 1.4 | 1.2 | 1.3 | 1.6 | 1.4 | 1.2 | 1.5 | 2.2 | 1.6 | 2.3 | 2.8 | 2.5 | 3.7 | 3.5 | 2.9 | 3.4 | 2.8 | 2.9 | 3.5 | 8.0 | 3.8 | 0.712 | 0.533 | 0.304 | 0.846 | 0.713 | 1.070 | 0.856 | 0.668 | 1.498 | 0.784 | 1.337 | 1.140 | 0.784 | 0.712 | 0.356 | 1.356 | 1.282 | 1.496 | 1.695 | 1.070 | 1.070 | 2.380 | 1.695 | 0.4 | 0.0 | 0.4 | 0.7 | -0.0 | 1.2 | 1.5 | 1.1 | 1.6 | 1.7 | 1.6 | 1.9 | 2.7 | 2.4 | 2.8 | 1.8 | 2.4 | 1.9 | 2.0 | 1.8 | 2.2 | 2.2 | 3.0 | 1.7 | 1.7 | 1.2 | -0.7 | 1.0 | -0.4 | 1.3 | 1.3 | 1.4 | 1.6 | 1.0 | 1.8 | 1.2 | 1.0 | 1.6 | 1.8 | 1.5 | 1.6 | 1.3 | 1.2 | 1.4 | 2.0 | 1.0 | 1.7 | 1.2 | 1.6 | 1.6 | 2.0 | 0.9 | 2.2 | 0.9 | 0.7 | 1.8 | 1.0 | 0.8 |
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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
Intervention | Degree (Mean) |
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| QRS axis, Mon 1, n=167 | QRS axis, Mon 3, n=151 | QRS axis, Mon 6, n=134 | QRS axis, Mon 9, n=118 | QRS axis, Mon 12, n=160 | QRS axis, Mon 24, n=104 | QRS axis, Mon 36, n=87 | QRS axis, Mon 48, n=77 | QRS axis, Mon 60, n=68 | QRS axis, Mon 72, n=52 | QRS axis, Mon 84, n=34 | QRS axis, Mon 96, n=18 | QRS axis, Mon 108, n=10 |
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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
Intervention | Volume/Volume (v/v) (Mean) |
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| Haematocrit, Mon 1, n=165 | Haematocrit, Mon 2, n=15 | Haematocrit, Mon 3, n=153 | Haematocrit, Mon 4, n=26 | Haematocrit, Mon 6, n=136 | Haematocrit, Mon 8, n=41 | Haematocrit, Mon 9, n=120 | Haematocrit, Mon 10, n=55 | Haematocrit, Mon 12, n=162 | Haematocrit, Mon 16, n=98 | Haematocrit, Mon 20, n=94 | Haematocrit, Mon 24, n=109 | Haematocrit, Mon 28, n=84 | Haematocrit, Mon 32, n=85 | Haematocrit, Mon 36, n=91 | Haematocrit, Mon 40, n=77 | Haematocrit, Mon 44, n=73 | Haematocrit, Mon 48, n=76 | Haematocrit, Mon 52, n=67 | Haematocrit, Mon 56, n=62 | Haematocrit, Mon 60, n=71 | Haematocrit, Mon 64, n=49 | Haematocrit, Mon 68, n=44 | Haematocrit, Mon 72, n=53 | Haematocrit, Mon 76, n=31 | Haematocrit, Mon 80, n=23 | Haematocrit, Mon 84, n=34 | Haematocrit, Mon 88, n=16 | Haematocrit, Mon 92, n=14 | Haematocrit, Mon 96, n=18 | Haematocrit, Mon 100, n=6 | Haematocrit, Mon 108, n=9 |
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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 | -0.009 | 0.001 | -0.001 | 0.005 | 0.004 | 0.011 | 0.008 | 0.014 | 0.009 | 0.007 | 0.017 | 0.027 | 0.017 | 0.028 | 0.030 |
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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
Intervention | Grams/Liter (g/L) (Mean) |
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| Haemoglobin, Mon 1, n=169 | Haemoglobin, Mon 2, n=15 | Haemoglobin, Mon 3, n=154 | Haemoglobin, Mon 4, n=26 | Haemoglobin, Mon 6, n=137 | Haemoglobin, Mon 8, n=43 | Haemoglobin, Mon 9, n=122 | Haemoglobin, Mon 10, n=55 | Haemoglobin, Mon 12, n=167 | Haemoglobin, Mon 16, n=98 | Haemoglobin, Mon 20, n=96 | Haemoglobin, Mon 24, n=110 | Haemoglobin, Mon 28, n=85 | Haemoglobin, Mon 32, n=86 | Haemoglobin, Mon 36, n=91 | Haemoglobin, Mon 40, n=78 | Haemoglobin, Mon 44, n=74 | Haemoglobin, Mon 48, n=79 | Haemoglobin, Mon 52, n=68 | Haemoglobin, Mon 56, n=63 | Haemoglobin, Mon 60, n=71 | Haemoglobin, Mon 64, n=49 | Haemoglobin, Mon 68, n=44 | Haemoglobin, Mon 72, n=53 | Haemoglobin, Mon 76, n=31 | Haemoglobin, Mon 80, n=24 | Haemoglobin, Mon 84, n=35 | Haemoglobin, Mon 88, n=16 | Haemoglobin, Mon 92, n=15 | Haemoglobin, Mon 96, n=19 | Haemoglobin, Mon 100, n=7 | Haemoglobin, Mon 104, n=1 | Haemoglobin, Mon 108, n=10 |
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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 | -3.1 | 0.7 | -2.1 | 2.6 | 8.0 | 0.5 |
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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
Intervention | Participants (Number) |
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Overall Study | 2 |
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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
Intervention | Kilograms (Mean) |
---|
| Body weight, Visit 1 (Month 1), n=356 | Body weight, Visit 2 (Month 3), n=325 | Body weight, Visit 3 (Month 6), n=287 | Body weight, Visit 4 (Month 9), n=252 | Body weight, Visit 5 (Month 12), n=235 | Body weight, Visit 6 (Month 16), n=202 | Body weight, Visit 7 (Month 20), n=181 | Body weight, Visit 8 (Month 24), n=167 | Body weight, Visit 9 (Month 28), n=147 | Body weight, Visit 10 (Month 32), n=128 | Body weight, Visit 11 (Month 36), n=121 | Body weight, Visit 12 (Month 40), 112 | Body weight, Visit 13 (Month 44), n=105 | Body weight, Visit 14 (Month 48), n=104 | Body weight, Visit 15 (Month 52), n=91 | Body weight, Visit 16 (Month 56), n=77 | Body weight, Visit 17 (Month 60), n=91 | Body weight, Visit 18 (Month 64), n=58 | Body weight, Visit 19 (Month 68), n=53 | Body weight, Visit 20 (Month 72), n=61 | Body weight, Visit 21 (Month 76), n=43 | Body weight, Visit 22 (Month 80), n=37 | Body weight, Visit 23 (Month 84), n=32 | Body weight, Visit 24 (Month 88), n=29 | Body weight, Visit 25 (Month 92), n=25 | Body weight, Visit 26 (Month 96), n=26 | Body weight, Visit 27 (Month 100), n=20 | Body weight, Visit 28 (Month 104), n=17 | Body weight, Visit 29 (Month 108), n=13 | Body weight, Visit 30 (Month 112), n=4 | Body weight, Visit 31 (Month 116), n=3 | Body weight, Visit 32 (Month 120), n=1 | Body weight, Follow up, n=267 |
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Retigabine | 1.19 | 1.37 | 1.51 | 1.08 | 1.56 | 1.98 | 1.79 | 1.20 | 1.67 | 1.75 | 2.07 | 2.12 | 1.09 | 1.08 | 0.66 | 0.71 | 1.31 | 1.32 | 1.49 | 1.65 | 1.71 | 2.30 | 2.00 | 1.12 | 0.83 | 0.12 | 1.57 | 1.62 | 2.32 | 4.85 | 9.73 | 0.50 | 1.34 |
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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
Intervention | Degree Celsius (Mean) |
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| Body temperature, Visit 1 (Month 1), n=350 | Body temperature, Visit 2 (Month 3), n=318 | Body temperature, Visit 3 (Month 6), n=280 | Body temperature, Visit 4 (Month 9), n=244 | Body temperature, Visit 5 (Month 12), n=229 | Body temperature, Visit 6 (Month 16), n=197 | Body temperature, Visit 7 (Month 20), n=176 | Body temperature, Visit 8 (Month 24), n=161 | Body temperature, Visit 9 (Month 28), n=143 | Body temperature, Visit 10 (Month 32), n=125 | Body temperature, Visit 11 (Month 36), n=118 | Body temperature, Visit 12 (Month 40), n=109 | Body temperature, Visit 13 (Month 44), n=101 | Body temperature, Visit 14 (Month 48), n=100 | Body temperature, Visit 15 (Month 52), n=88 | Body temperature, Visit 16 (Month 56), n=74 | Body temperature, Visit 17 (Month 60), n=89 | Body temperature, Visit 18 (Month 64), n=58 | Body temperature, Visit 19 (Month 68), n=53 | Body temperature, Visit 20 (Month 72), n=59 | Body temperature, Visit 21 (Month 76), n=42 | Body temperature, Visit 22 (Month 80), n=37 | Body temperature, Visit 23 (Month 84), n=32 | Body temperature, Visit 24 (Month 88), n=29 | Body temperature, Visit 25 (Month 92), n=25 | Body temperature, Visit 26 (Month 96), n=26 | Body temperature, Visit 27 (Month 100), n=20 | Body temperature, Visit 28 (Month 104), n=17 | Body temperature, Visit 29 (Month 108), n=13 | Body temperature, Visit 30 (Month 112), n=4 | Body temperature, Visit 31 (Month 116), n=3 | Body temperature, Visit 32 (Month 120), n=1 | Body temperature, Follow up, n=261 |
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Retigabine | 0.02 | 0.02 | 0.03 | 0.00 | 0.01 | 0.02 | 0.04 | 0.02 | 0.01 | 0.02 | 0.02 | 0.01 | 0.04 | 0.05 | -0.02 | -0.01 | 0.03 | -0.01 | 0.05 | 0.06 | 0.06 | -0.04 | 0.05 | -0.06 | 0.00 | -0.10 | -0.03 | -0.02 | 0.04 | -0.02 | -0.20 | 0.10 | 0.03 |
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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
Intervention | Millimoles per liter (Mean) |
---|
| Bicarbonate, Visit 1 (Month 1), n=344 | Bicarbonate, Visit 1a (Month 2), n=1 | Bicarbonate, Visit 2 (Month 3), n=316 | Bicarbonate, Visit 3 (Month 6), n=272 | Bicarbonate, Visit 4 (Month 9), n=243 | Bicarbonate, Visit 5 (Month 12), n=221 | Bicarbonate, Visit 6 (Month 16), n=196 | Bicarbonate, Visit 7 (Month 20), n=171 | Bicarbonate, Visit 8 (Month 24), n=159 | Bicarbonate, Visit 9 (Month 28), n=140 | Bicarbonate, Visit 10 (Month 32), n=126 | Bicarbonate, Visit 11 (Month 36), n=116 | Bicarbonate, Visit 12 (Month 40), n=107 | Bicarbonate, Visit 13 (Month 44), n=100 | Bicarbonate, Visit 14 (Month 48), n=101 | Bicarbonate, Visit 15 (Month 52), n=86 | Bicarbonate, Visit 16 (Month 56), n=76 | Bicarbonate, Visit 17 (Month 60), n=90 | Bicarbonate, Visit 18 (Month 64), n=55 | Bicarbonate, Visit 19 (Month 68), n=49 | Bicarbonate, Visit 20 (Month 72), n=56 | Bicarbonate, Visit 21 (Month 76), n=39 | Bicarbonate, Visit 22 (Month 80), n=35 | Bicarbonate, Visit 23 (Month 84), n=32 | Bicarbonate, Visit 24 (Month 88), n=28 | Bicarbonate, Visit 25 (Month 92), n=25 | Bicarbonate, Visit 26 (Month 96), n=25 | Bicarbonate, Visit 27 (Month 100), n=20 | Bicarbonate, Visit 28 (Month 104), n=15 | Bicarbonate, Visit 29 (Month 108), n=13 | Bicarbonate, Visit 30 (Month 112), n=4 | Bicarbonate, Visit 31 (Month 116), n=3 | Bicarbonate, Visit 32 (Month 120), n=1 | Bicarbonate, Follow up, n=256 | Calcium, Visit 1 (Month 1), n=352 | Calcium, Visit 1a (Month 2), n=1 | Calcium, Visit 2 (Month 3), n=322 | Calcium, Visit 2a (Month 4), n=1 | Calcium, Visit 3 (Month 6), n=279 | Calcium, Visit 4 (Month 9), n=248 | Calcium, Visit 5 (Month 12), n=228 | Calcium, Visit 6 (Month 16), n=200 | Calcium, Visit 7 (Month 20), n=176 | Calcium, Visit 8 (Month 24), n=163 | Calcium, Visit 9 (Month 28), n=142 | Calcium, Visit 10 (Month 32), n=126 | Calcium, Visit 11 (Month 36), n=116 | Calcium, Visit 12 (Month 40), n=108 | Calcium, Visit 13 (Month 44), n=101 | Calcium, Visit 14 (Month 48), n=101 | Calcium, Visit 15 (Month 52), n=88 | Calcium, Visit 16 (Month 56), n=76 | Calcium, Visit 17 (Month 60), n=90 | Calcium, Visit 18 (Month 64), n=55 | Calcium, Visit 19 (Month 68), n=51 | Calcium, Visit 20 (Month 72), n=58 | Calcium, Visit 21 (Month 76), n=40 | Calcium, Visit 22 (Month 80), n=35 | Calcium, Visit 23 (Month 84), n=32 | Calcium, Visit 24 (Month 88), n=28 | Calcium, Visit 25 (Month 92), n=25 | Calcium, Visit 26 (Month 96), n=26 | Calcium, Visit 27 (Month 100), n=20 | Calcium, Visit 28 (Month 104), n=16 | Calcium, Visit 29 (Month 108), n=13 | Calcium, Visit 30 (Month 112), n=4 | Calcium, Visit 31 (Month 116), n=3 | Calcium, Visit 32 (Month 120), n=1 | Calcium, Follow up, n=261 | Chloride, Visit 1 (Month 1), n=352 | Chloride, Visit 1a (Month 2), n=1 | Chloride, Visit 2 (Month 3), n=322 | Chloride, Visit 2a (Month 4), n=1 | Chloride, Visit 3 (Month 6), n=279 | Chloride, Visit 4 (Month 9), n=248 | Chloride, Visit 5 (Month 12), n=228 | Chloride, Visit 6 (Month 16), n=200 | Chloride, Visit 7 (Month 20), n=176 | Chloride, Visit 8 (Month 24), n=164 | Chloride, Visit 9 (Month 28), n=143 | Chloride, Visit 10 (Month 32), n=127 | Chloride, Visit 11 (Month 36), n=118 | Chloride, Visit 12 (Month 40), n=108 | Chloride, Visit 13 (Month 44), n=103 | Chloride, Visit 14 (Month 48), n=102 | Chloride, Visit 15 (Month 52), n=89 | Chloride, Visit 16 (Month 56), n=76 | Chloride, Visit 17 (Month 60), n=91 | Chloride, Visit 18 (Month 64), n=55 | Chloride, Visit 19 (Month 68), n=51 | Chloride, Visit 20 (Month 72), n=58 | Chloride, Visit 21 (Month 76), n=40 | Chloride, Visit 22 (Month 80), n=35 | Chloride, Visit 23 (Month 84), n=32 | Chloride, Visit 24 (Month 88), n=28 | Chloride, Visit 25 (Month 92), n=25 | Chloride, Visit 26 (Month 96), n=26 | Chloride, Visit 27 (Month 100), n=20 | Chloride, Visit 28 (Month 104), n=16 | Chloride, Visit 29 (Month 108), n=13 | Chloride,Visit 30 (Month 112), n=4 | Chloride,Visit 31 (Month 116), n=3 | Chloride, Visit 32 (Month 120), n=1 | Chloride, Follow up, n=261 | Cholesterol, Visit 1 (Month 1), n=352 | Cholesterol, Visit 1a (Month 2), n=1 | Cholesterol, Visit 2 (Month 3), n=322 | Cholesterol, Visit 2a (Month 4), n=1 | Cholesterol, Visit 3 (Month 6), n=279 | Cholesterol, Visit 4 (Month 9), n=248 | Cholesterol, Visit 5 (Month 12), n=228 | Cholesterol, Visit 6 (Month 16), n=200 | Cholesterol, Visit 7 (Month 20), n=176 | Cholesterol, Visit 8 (Month 24), n=163 | Cholesterol, Visit 9 (Month 28), n=142 | Cholesterol, Visit 10 (Month 32), n=126 | Cholesterol, Visit 11 (Month 36), n=116 | Cholesterol, Visit 12 (Month 40), n=108 | Cholesterol, Visit 13 (Month 44), n=101 | Cholesterol, Visit 14 (Month 48), n=101 | Cholesterol, Visit 15 (Month 52), n=88 | Cholesterol, Visit 16 (Month 56), n=76 | Cholesterol, Visit 17 (Month 60), n=90 | Cholesterol, Visit 18 (Month 64), n=55 | Cholesterol, Visit 19 (Month 68), n=50 | Cholesterol, Visit 20 (Month 72), n=58 | Cholesterol, Visit 21 (Month 76), n=40 | Cholesterol, Visit 22 (Month 80), n=35 | Cholesterol, Visit 23 (Month 84), n=32 | Cholesterol, Visit 24 (Month 88), n=28 | Cholesterol, Visit 25 (Month 92), n=25 | Cholesterol, Visit 26 (Month 96), n=26 | Cholesterol, Visit 27 (Month 100), n=20 | Cholesterol, Visit 28 (Month 104), n=16 | Cholesterol, Visit 29 (Month 108), n=13 | Cholesterol, Visit 30 (Month 112), n=4 | Cholesterol, Visit 31 (Month 116), n=3 | Cholesterol, Visit 32 (Month 120), n=1 | Cholesterol, Follow up, n=261 | Non-fasting Glucose, Visit 1 (Month 1), n=351 | Non-fasting Glucose, Visit 1a (Month 2), n=1 | Non-fasting Glucose, Visit 2 (Month 3), n=321 | Non-fasting Glucose, Visit 2a (Month 4), n=1 | Non-fasting Glucose, Visit 3 (Month 6), n=278 | Non-fasting Glucose, Visit 4 (Month 9), n=247 | Non-fasting Glucose, Visit 5 (Month 12), n=227 | Non-fasting Glucose, Visit 6 (Month 16), n=199 | Non-fasting Glucose, Visit 7 (Month 20), n=176 | Non-fasting Glucose, Visit 8 (Month 24), n=161 | Non-fasting Glucose, Visit 9 (Month 28), n=142 | Non-fasting Glucose, Visit 10 (Month 32), n=126 | Non-fasting Glucose, Visit 11 (Month 36), n=115 | Non-fasting Glucose, Visit 12 (Month 40), n=108 | Non-fasting Glucose, Visit 13 (Month 44), n=100 | Non-fasting Glucose, Visit 14 (Month 48), n=101 | Non-fasting Glucose, Visit 15 (Month 52), n=88 | Non-fasting Glucose, Visit 16 (Month 56), n=75 | Non-fasting Glucose, Visit 17 (Month 60), n=89 | Non-fasting Glucose, Visit 18 (Month 64), n=55 | Non-fasting Glucose, Visit 19 (Month 68), n=49 | Non-fasting Glucose, Visit 20 (Month 72), n=58 | Non-fasting Glucose, Visit 21 (Month 76), n=40 | Non-fasting Glucose, Visit 22 (Month 80), n=35 | Non-fasting Glucose, Visit 23 (Month 84), n=32 | Non-fasting Glucose, Visit 24 (Month 88), n=28 | Non-fasting Glucose, Visit 25 (Month 92), n=25 | Non-fasting Glucose, Visit 26 (Month 96), n=26 | Non-fasting Glucose, Visit 27 (Month 100), n=20 | Non-fasting Glucose, Visit 28 (Month 104), n=16 | Non-fasting Glucose, Visit 29 (Month 108), n=13 | Non-fasting Glucose, Visit 30 (Month 112), n=4 | Non-fasting Glucose, Visit 31 (Month 116), n=3 | Non-fasting Glucose, Visit 32 (Month 120), n=1 | Non-fasting Glucose, Follow up, n=259 | Phosphorus, Visit 1 (Month 1), n=351 | Phosphorus, Visit 1a (Month 2), n=1 | Phosphorus, Visit 2 (Month 3), n=320 | Phosphorus, Visit 2a (Month 4), n=1 | Phosphorus, Visit 3 (Month 6), n=278 | Phosphorus, Visit 4 (Month 9), n=247 | Phosphorus, Visit 5 (Month 12), n=227 | Phosphorus, Visit 6 (Month 16), n=199 | Phosphorus, Visit 7 (Month 20), n=176 | Phosphorus, Visit 8 (Month 24), n=161 | Phosphorus, Visit 9 (Month 28), n=142 | Phosphorus, Visit 10 (Month 32), n=126 | Phosphorus, Visit 11 (Month 36), n=115 | Phosphorus, Visit 12 (Month 40), n=108 | Phosphorus, Visit 13 (Month 44), n=100 | Phosphorus, Visit 14 (Month 48), n=101 | Phosphorus, Visit 15 (Month 52), n=88 | Phosphorus, Visit 16 (Month 56), n=75 | Phosphorus, Visit 17 (Month 60), n=89 | Phosphorus, Visit 18 (Month 64), n=55 | Phosphorus, Visit 19 (Month 68), n=49 | Phosphorus, Visit 20 (Month 72), n=58 | Phosphorus, Visit 21 (Month 76), n=40 | Phosphorus, Visit 22 (Month 80), n=35 | Phosphorus, Visit 23 (Month 84), n=32 | Phosphorus, Visit 24 (Month 88), n=28 | Phosphorus, Visit 25 (Month 92), n=25 | Phosphorus, Visit 26 (Month 96), n=26 | Phosphorus, Visit 27 (Month 100), n=20 | Phosphorus, Visit 28 (Month 104), n=16 | Phosphorus, Visit 29 (Month 108), n=13 | Phosphorus, Visit 30 (Month 112), n=4 | Phosphorus, Visit 31 (Month 116), n=3 | Phosphorus, Visit 32 (Month 120), n=1 | Phosphorus, Follow up, n=260 | Potassium, Visit 1 (Month 1), n=351 | Potassium, Visit 1a (Month 2), n=1 | Potassium, Visit 2 (Month 3), n=322 | Potassium, Visit 2a (Month 4), n=1 | Potassium, Visit 3 (Month 6), n=279 | Potassium, Visit 4 (Month 9), n=247 | Potassium, Visit 5 (Month 12), n=230 | Potassium, Visit 6 (Month 16), n=199 | Potassium, Visit 7 (Month 20), n=174 | Potassium, Visit 8 (Month 24), n=162 | Potassium, Visit 9 (Month 28), n=143 | Potassium, Visit 10 (Month 32), n=127 | Potassium, Visit 11 (Month 36), n=116 | Potassium, Visit 12 (Month 40), n=108 | Potassium, Visit 13 (Month 44), n=102 | Potassium, Visit 14 (Month 48), n=101 | Potassium, Visit 15 (Month 52), n=89 | Potassium, Visit 16 (Month 56), n=75 | Potassium, Visit 17 (Month 60), n=89 | Potassium, Visit 18 (Month 64), n=55 | Potassium, Visit 19 (Month 68), n=50 | Potassium, Visit 20 (Month 72), n=58 | Potassium, Visit 21 (Month 76), n=39 | Potassium, Visit 22 (Month 80), n=35 | Potassium, Visit 23 (Month 84), n=32 | Potassium, Visit 24 (Month 88), n=28 | Potassium, Visit 25 (Month 92), n=25 | Potassium, Visit 26 (Month 96), n=26 | Potassium, Visit 27 (Month 100), n=20 | Potassium, Visit 28 (Month 104), n=16 | Potassium, Visit 29 (Month 108), n=13 | Potassium, Visit 30 (Month 112), n=4 | Potassium, Visit 31 (Month 116), n=3 | Potassium, Visit 32 (Month 120), n=1 | Potassium, Follow up, n=258 | Sodium, Visit 1 (Month 1), n=352 | Sodium, Visit 1a (Month 2), n=1 | Sodium, Visit 2 (Month 3), n=324 | Sodium, Visit 2a (Month 4), n=1 | Sodium, Visit 3 (Month 6), n=280 | Sodium, Visit 4 (Month 9), n=248 | Sodium, Visit 5 (Month 12), n=231 | Sodium, Visit 6 (Month 16), n=200 | Sodium, Visit 7 (Month 20), n=176 | Sodium, Visit 8 (Month 24), n=164 | Sodium, Visit 9 (Month 28), n=143 | Sodium, Visit 10 (Month 32), n=127 | Sodium, Visit 11 (Month 36), n=118 | Sodium, Visit 12 (Month 40), n=108 | Sodium, Visit 13 (Month 44), n=103 | Sodium, Visit 14 (Month 48), n=102 | Sodium, Visit 15 (Month 52), n=89 | Sodium, Visit 16 (Month 56), n=76 | Sodium, Visit 17 (Month 60), n=91 | Sodium, Visit 18 (Month 64), n=55 | Sodium, Visit 19 (Month 68), n=51 | Sodium, Visit 20 (Month 72), n=58 | Sodium, Visit 21 (Month 76), n=40 | Sodium, Visit 22 (Month 80), n=35 | Sodium, Visit 23 (Month 84), n=32 | Sodium, Visit 24 (Month 88), n=28 | Sodium, Visit 25 (Month 92), n=25 | Sodium, Visit 26 (Month 96), n=26 | Sodium, Visit 27 (Month 100), n=20 | Sodium, Visit 28 (Month 104), n=16 | Sodium, Visit 29 (Month 108), n=13 | Sodium, Visit 30 (Month 112), n=4 | Sodium, Visit 31 (Month 116), n=3 | Sodium, Visit 32 (Month 120), n=1 | Sodium, Follow up, n=261 | Urea, Visit 1 (Month 1), n=351 | Urea, Visit 1a (Month 2), n=1 | Urea, Visit 2 (Month 3), n=322 | Urea, Visit 2a (Month 4), n=1 | Urea, Visit 3 (Month 6), n=279 | Urea, Visit 4 (Month 9), n=248 | Urea, Visit 5 (Month 12), n=228 | Urea, Visit 6 (Month 16), n=200 | Urea, Visit 7 (Month 20), n=176 | Urea, Visit 8 (Month 24), n=163 | Urea, Visit 9 (Month 28), n=142 | Urea, Visit 10 (Month 32), n=126 | Urea, Visit 11 (Month 36), n=117 | Urea, Visit 12 (Month 40), n=108 | Urea, Visit 13 (Month 44), n=102 | Urea, Visit 14 (Month 48), n=101 | Urea, Visit 15 (Month 52), n=88 | Urea, Visit 16 (Month 56), n=76 | Urea, Visit 17 (Month 60), n=90 | Urea, Visit 18 (Month 64), n=55 | Urea, Visit 19 (Month 68), n=51 | Urea, Visit 20 (Month 72), n=58 | Urea, Visit 21 (Month 76), n=40 | Urea, Visit 22 (Month 80), n=35 | Urea, Visit 23 (Month 84), n=32 | Urea, Visit 24 (Month 88), n=28 | Urea, Visit 25 (Month 92), n=25 | Urea, Visit 26 (Month 96), n=26 | Urea, Visit 27 (Month 100), n=20 | Urea, Visit 28 (Month 104), n=16 | Urea, Visit 29 (Month 108), n=13 | Urea, Visit 30 (Month 112), n=4 | Urea, Visit 31 (Month 116), n=3 | Urea, Visit 32 (Month 120), n=1 | Urea, Follow up, n=260 |
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Retigabine | -0.2 | -2.0 | -0.3 | 0.0 | -0.3 | -0.8 | -0.2 | -0.2 | -0.2 | -0.1 | -0.5 | -0.4 | 0.0 | 0.4 | -0.1 | 0.5 | -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 | -2.0 | 3.3 | 2.0 | -1.0 | 0.000 | -0.250 | 0.008 | -0.100 | 0.018 | 0.022 | 0.010 | 0.005 | 0.005 | 0.014 | 0.015 | 0.023 | 0.017 | 0.035 | 0.028 | 0.025 | 0.020 | 0.016 | 0.008 | -0.007 | 0.019 | -0.012 | 0.020 | 0.079 | 0.038 | 0.034 | 0.089 | 0.075 | 0.121 | 0.091 | 0.080 | 0.133 | 0.053 | -0.040 | 0.031 | 0.1 | 1.0 | 0.3 | 2.0 | 0.9 | 1.0 | 1.2 | 1.8 | 2.0 | 1.8 | 2.1 | 1.3 | 1.3 | 2.4 | 2.2 | 1.2 | 2.0 | 1.6 | 1.3 | 2.3 | 0.9 | 0.2 | 0.6 | 0.8 | 1.1 | 0.8 | -0.4 | -0.4 | 0.1 | -1.1 | -1.0 | -3.0 | -2.3 | -3.0 | 0.3 | 0.066 | -0.360 | 0.108 | -0.470 | 0.062 | 0.062 | 0.075 | 0.101 | 0.001 | 0.087 | -0.001 | -0.028 | -0.087 | -0.001 | -0.043 | -0.128 | -0.057 | 0.026 | 0.016 | 0.054 | 0.074 | -0.048 | 0.103 | 0.096 | 0.077 | 0.310 | 0.327 | 0.489 | 0.370 | 0.354 | 0.141 | 1.775 | 1.123 | 0.050 | -0.070 | 0.06 | -0.30 | 0.17 | 0.40 | 0.12 | 0.16 | 0.16 | 0.10 | 0.02 | 0.12 | 0.04 | 0.03 | 0.08 | 0.06 | 0.07 | -0.04 | 0.08 | 0.19 | 0.08 | 0.14 | 0.05 | 0.16 | 0.03 | 0.29 | -0.01 | 0.14 | 0.28 | 0.50 | 0.18 | 0.74 | 0.25 | 0.65 | 0.70 | -0.30 | 0.18 | 0.017 | 0.030 | 0.014 | 0.160 | -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 | -0.05 | 0.40 | -0.04 | -0.08 | -0.07 | 0.00 | -0.02 | -0.03 | -0.01 | -0.01 | -0.01 | -0.05 | -0.06 | -0.01 | -0.01 | 0.00 | -0.05 | -0.12 | -0.03 | -0.10 | -0.11 | -0.08 | 0.01 | -0.05 | -0.01 | -0.02 | -0.09 | -0.18 | -0.09 | -0.38 | -0.83 | -0.30 | -0.02 | -0.3 | 0.0 | -0.1 | 1.0 | 0.8 | 0.5 | 0.6 | 0.9 | 1.1 | 1.0 | 1.6 | 1.2 | 1.3 | 1.9 | 1.7 | 1.1 | 1.8 | 1.7 | 1.8 | 2.7 | 2.2 | 1.0 | 2.2 | 2.0 | 2.4 | 1.9 | 1.4 | 1.8 | 1.8 | 0.9 | 0.5 | -0.3 | 0.7 | -5.0 | 0.3 | 0.583 | 2.860 | 0.606 | 1.780 | 0.623 | 0.642 | 0.599 | 0.656 | 0.750 | 0.652 | 0.578 | 0.748 | 0.552 | 0.794 | 0.697 | 0.792 | 0.828 | 0.742 | 0.778 | 0.766 | 0.791 | 0.794 | 1.152 | 0.939 | 0.781 | 0.791 | 0.529 | 0.811 | 0.501 | 0.536 | 0.523 | 0.983 | 0.837 | -1.070 | 0.158 |
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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
Intervention | 10^9 cells per Liter (Mean) |
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| Basophils, Visit 1 (Month 1), n=345 | Basophils, Visit 1a (Month 2), n=64 | Basophils, Visit 2 (Month 3), n=309 | Basophils, Visit 2a (Month 4), n=82 | Basophils, Visit 3 (Month 6), n=273 | Basophils, Visit 3a (Month 8), n=97 | Basophils, Visit 4 (Month 9), n=239 | Basophils, Visit 4a (Month 10), n=111 | Basophils, Visit 5 (Month 12), n=225 | Basophils, Visit 6 (Month 16), n=198 | Basophils, Visit 7 (Month 20), n=173 | Basophils, Visit 8 (Month 24), n=159 | Basophils, Visit 9 (Month 28), n=139 | Basophils, Visit 10 (Month 32), n=125 | Basophils, Visit 11 (Month 36), n=112 | Basophils, Visit 12 (Month 40), n=108 | Basophils, Visit 13 (Month 44), n=98 | Basophils, Visit 14 (Month 48), n=100 | Basophils, Visit 15 (Month 52), n=88 | Basophils, Visit 16 (Month 56), n=75 | Basophils, Visit 17 (Month 60), n=89 | Basophils, Visit 18 (Month 64), n=51 | Basophils, Visit 19 (Month 68), n=50 | Basophils, Visit 20 (Month 72), n=54 | Basophils, Visit 21 (Month 76), n=39 | Basophils, Visit 22 (Month 80), n=35 | Basophils, Visit 23 (Month 84), n=32 | Basophils, Visit 24 (Month 88), n=27 | Basophils, Visit 25 (Month 92), n=25 | Basophils, Visit 26 (Month 96), n=24 | Basophils, Visit 27 (Month 100), n=20 | Basophils, Visit 28 (Month 104), n=16 | Basophils, Visit 29 (Month 108), n=13 | Basophils, Visit 30 (Month 112), n=4 | Basophils, Visit 31 (Month 116), n=3 | Basophils, Visit 32 (Month 120), n=1 | Basophils, Follow up, n=252 | Eosinophils, Visit 1 (Month 1), n=345 | Eosinophils, Visit 1a (Month 2), n=64 | Eosinophils, Visit 2 (Month 3), n=309 | Eosinophils, Visit 2a (Month 4), n=82 | Eosinophils, Visit 3 (Month 6), n=273 | Eosinophils, Visit 3a (Month 8), n=97 | Eosinophils, Visit 4 (Month 9), n=239 | Eosinophils, Visit 4a (Month 10), n=111 | Eosinophils, Visit 5 (Month 12), n=225 | Eosinophils, Visit 6 (Month 16), n=198 | Eosinophils, Visit 7 (Month 20), n=173 | Eosinophils, Visit 8 (Month 24), n=159 | Eosinophils, Visit 9 (Month 28), n=139 | Eosinophils, Visit 10 (Month 32), n=125 | Eosinophils, Visit 11 (Month 36), n=112 | Eosinophils, Visit 12 (Month 40), n=108 | Eosinophils, Visit 13 (Month 44), n=98 | Eosinophils, Visit 14 (Month 48), n=100 | Eosinophils, Visit 15 (Month 52), n=88 | Eosinophils, Visit 16 (Month 56), n=75 | Eosinophils, Visit 17 (Month 60), n=88 | Eosinophils, Visit 18 (Month 64), n=51 | Eosinophils, Visit 19 (Month 68), n=50 | Eosinophils, Visit 20 (Month 72), n=54 | Eosinophils, Visit 21 (Month 76), n=39 | Eosinophils, Visit 22 (Month 80), n=35 | Eosinophils, Visit 23 (Month 84), n=32 | Eosinophils, Visit 24 (Month 88), n=27 | Eosinophils, Visit 25 (Month 92), n=25 | Eosinophils, Visit 26 (Month 96), n=24 | Eosinophils, Visit 27 (Month 100), n=20 | Eosinophils, Visit 28 (Month 104), n=16 | Eosinophils, Visit 29 (Month 108), n=13 | Eosinophils, Visit 30 (Month 112), n=4 | Eosinophils, Visit 31 (Month 116), n=3 | Eosinophils, Visit 32 (Month 120), n=1 | Eosinophils, Follow up, n=252 | Lymphocytes, Visit 1 (Month 1), n=345 | Lymphocytes, Visit 1a (Month 2), n=64 | Lymphocytes, Visit 2 (Month 3), n=309 | Lymphocytes, Visit 2a (Month 4), n=82 | Lymphocytes, Visit 3 (Month 6), n=273 | Lymphocytes, Visit 3a (Month 8), n=97 | Lymphocytes, Visit 4 (Month 9), n=239 | Lymphocytes, Visit 4a (Month 10), n=111 | Lymphocytes, Visit 5 (Month 12), n=225 | Lymphocytes, Visit 6 (Month 16), n=198 | Lymphocytes, Visit 7 (Month 20), n=173 | Lymphocytes, Visit 8 (Month 24), n=159 | Lymphocytes, Visit 9 (Month 28), n=139 | Lymphocytes, Visit 10 (Month 32), n=125 | Lymphocytes, Visit 11 (Month 36), n=112 | Lymphocytes, Visit 12 (Month 40), n=108 | Lymphocytes, Visit 13 (Month 44), n=98 | Lymphocytes, Visit 14 (Month 48), n=100 | Lymphocytes, Visit 15 (Month 52), n=88 | Lymphocytes, Visit 16 (Month 56), n=75 | Lymphocytes, Visit 17 (Month 60), n=88 | Lymphocytes, Visit 18 (Month 64), n=51 | Lymphocytes, Visit 19 (Month 68), n=50 | Lymphocytes, Visit 20 (Month 72), n=54 | Lymphocytes, Visit 21 (Month 76), n=39 | Lymphocytes, Visit 22 (Month 80), n=35 | Lymphocytes, Visit 23 (Month 84), n=32 | Lymphocytes, Visit 24 (Month 88), n=27 | Lymphocytes, Visit 25 (Month 92), n=25 | Lymphocytes, Visit 26 (Month 96), n=24 | Lymphocytes, Visit 27 (Month 100), n=20 | Lymphocytes, Visit 28 (Month 104), n=16 | Lymphocytes, Visit 29 (Month 108), n=13 | Lymphocytes, Visit 30 (Month 112), n=4 | Lymphocytes, Visit 31 (Month 116), n=3 | Lymphocytes, Visit 32 (Month 120), n=1 | Lymphocytes, Follow up, n=252 | Monocytes, Visit 1 (Month 1), n=345 | Monocytes, Visit 1a (Month 2), n=64 | Monocytes, Visit 2 (Month 3), n=309 | Monocytes, Visit 2a (Month 4), n=82 | Monocytes, Visit 3 (Month 6), n=273 | Monocytes, Visit 3a (Month 8), n=97 | Monocytes, Visit 4 (Month 9), n=239 | Monocytes, Visit 4a (Month 10), n=111 | Monocytes, Visit 5 (Month 12), n=225 | Monocytes, Visit 6 (Month 16), n=198 | Monocytes, Visit 7 (Month 20), n=173 | Monocytes, Visit 8 (Month 24), n=159 | Monocytes, Visit 9 (Month 28), n=139 | Monocytes, Visit 10 (Month 32), n=125 | Monocytes, Visit 11 (Month 36), n=112 | Monocytes, Visit 12 (Month 40), n=108 | Monocytes, Visit 13 (Month 44), n=98 | Monocytes, Visit 14 (Month 48), n=100 | Monocytes, Visit 15 (Month 52), n=88 | Monocytes, Visit 16 (Month 56), n=75 | Monocytes, Visit 17 (Month 60), n=88 | Monocytes, Visit 18 (Month 64), n=51 | Monocytes, Visit 19 (Month 68), n=50 | Monocytes, Visit 20 (Month 72), n=54 | Monocytes, Visit 21 (Month 76), n=39 | Monocytes, Visit 22 (Month 80), n=35 | Monocytes, Visit 23 (Month 84), n=32 | Monocytes, Visit 24 (Month 88), n=27 | Monocytes, Visit 25 (Month 92), n=25 | Monocytes, Visit 26 (Month 96), n=24 | Monocytes, Visit 27 (Month 100), n=20 | Monocytes, Visit 28 (Month 104), n=16 | Monocytes, Visit 29 (Month 108), n=13 | Monocytes, Visit 30 (Month 112), n=4 | Monocytes, Visit 31 (Month 116), n=3 | Monocytes, Visit 32 (Month 120), n=1 | Monocytes, Follow up, n=252 | Neutrophils, Visit 1 (Month 1), n=345 | Neutrophils, Visit 1a (Month 2), n=64 | Neutrophils, Visit 2 (Month 3), n=309 | Neutrophils, Visit 2a (Month 4), n=82 | Neutrophils, Visit 3 (Month 6), n=273 | Neutrophils, Visit 3a (Month 8), n=97 | Neutrophils, Visit 4 (Month 9), n=239 | Neutrophils, Visit 4a (Month 10), n=111 | Neutrophils, Visit 5 (Month 12), n=225 | Neutrophils, Visit 6 (Month 16), n=198 | Neutrophils, Visit 7 (Month 20), n=173 | Neutrophils, Visit 8 (Month 24), n=159 | Neutrophils, Visit 9 (Month 28), n=139 | Neutrophils, Visit 10 (Month 32), n=125 | Neutrophils, Visit 11 (Month 36), n=112 | Neutrophils, Visit 12 (Month 40), n=108 | Neutrophils, Visit 13 (Month 44), n=98 | Neutrophils, Visit 14 (Month 48), n=100 | Neutrophils, Visit 15 (Month 52), n=88 | Neutrophils, Visit 16 (Month 56), n=75 | Neutrophils, Visit 17 (Month 60), n=88 | Neutrophils, Visit 18 (Month 64), n=51 | Neutrophils, Visit 19 (Month 68), n=50 | Neutrophils, Visit 20 (Month 72), n=54 | Neutrophils, Visit 21 (Month 76), n=39 | Neutrophils, Visit 22 (Month 80), n=35 | Neutrophils, Visit 23 (Month 84), n=32 | Neutrophils, Visit 24 (Month 88), n=27 | Neutrophils, Visit 25 (Month 92), n=25 | Neutrophils, Visit 26 (Month 96), n=24 | Neutrophils, Visit 27 (Month 100), n=20 | Neutrophils, Visit 28 (Month 104), n=16 | Neutrophils, Visit 29 (Month 108), n=13 | Neutrophils, Visit 30 (Month 112), n=4 | Neutrophils, Visit 31 (Month 116), n=3 | Neutrophils, Visit 32 (Month 120), n=1 | Neutrophils, Follow up, n=252 | Platelet Count, Visit 1 (Month 1), n=345 | Platelet count, Visit 1a (Month 2), n=65 | Platelet count, Visit 2 (Month 3), n=311 | Platelet count, Visit 2a (Month 4), n=82 | Platelet count, Visit 3 (Month 6), n=273 | Platelet count, Visit 3a (Month 8), n=99 | Platelet count, Visit 4 (Month 9), n=241 | Platelet count, Visit 4a (Month 10), n=108 | Platelet count, Visit 5 (Month 12), n=225 | Platelet count, Visit 6 (Month 16), n=196 | Platelet count, Visit 7 (Month 20), n=171 | Platelet count, Visit 8 (Month 24), n=162 | Platelet count, Visit 9 (Month 28), n=137 | Platelet count, Visit 10 (Month 32), n=124 | Platelet count, Visit 11 (Month 36), n=114 | Platelet count, Visit 12 (Month 40), n=108 | Platelet count, Visit 13 (Month 44), n=98 | Platelet count, Visit 14 (Month 48), n=98 | Platelet count, Visit 15 (Month 52), n=84 | Platelet count, Visit 16 (Month 56), n=75 | Platelet count, Visit 17 (Month 60), n=88 | Platelet count, Visit 18 (Month 64), n=54 | Platelet count, Visit 19 (Month 68), n=50 | Platelet count, Visit 20 (Month 72), n=53 | Platelet count, Visit 21 (Month 76), n=40 | Platelet count, Visit 22 (Month 80), n=34 | Platelet count, Visit 23 (Month 84), n=31 | Platelet count, Visit 24 (Month 88), n=25 | Platelet count, Visit 25 (Month 92), n=25 | Platelet count, Visit 26 (Month 96), n=24 | Platelet count, Visit 27 (Month 100), n=20 | Platelet count, Visit 28 (Month 104), n=16 | Platelet count, Visit 29 (Month 108), n=13 | Platelet count, Visit 30 (Month 112), n=4 | Platelet count, Visit 31 (Month 116), n=3 | Platelet count, Visit 32 (Month 120), n=1 | Platelet count, Follow up, n=249 | WBC, Visit 1 (Month 1), n=349 | WBC, Visit 1a (Month 2), n=65 | WBC, Visit 2 (Month 3), n=315 | WBC, Visit 2a (Month 4), n=82 | WBC, Visit 3 (Month 6), n=278 | WBC, Visit 3a (Month 8), n=99 | WBC, Visit 4 (Month 9), n=244 | WBC, Visit 4a (Month 10), n=113 | WBC, Visit 5 (Month 12), n=226 | WBC, Visit 6 (Month 16), n=199 | WBC, Visit 7 (Month 20), n=174 | WBC, Visit 8 (Month 24), n=164 | WBC, Visit 9 (Month 28), n=142 | WBC, Visit 10 (Month 32), n=126 | WBC, Visit 11 (Month 36), n=115 | WBC, Visit 12 (Month 40), n=109 | WBC, Visit 13 (Month 44), n=98 | WBC, Visit 14 (Month 48), n=101 | WBC, Visit 15 (Month 52), n=88 | WBC, Visit 16 (Month 56), n=76 | WBC, Visit 17 (Month 60), n=89 | WBC, Visit 18 (Month 64), n=54 | WBC, Visit 19 (Month 68), n=50 | WBC, Visit 20 (Month 72), n=55 | WBC, Visit 21 (Month 76), n=40 | WBC, Visit 22 (Month 80), n=35 | WBC, Visit 23 (Month 84), n=32 | WBC, Visit 24 (Month 88), n=27 | WBC, Visit 25 (Month 92), n=25 | WBC, Visit 26 (Month 96), n=24 | WBC, Visit 27 (Month 100), n=20 | WBC, Visit 28 (Month 104), n=16 | WBC, Visit 29 (Month 108), n=13 | WBC, Visit 30 (Month 112), n=4 | WBC, Visit 31 (Month 116), n=3 | WBC, Visit 32 (Month 120), n=1 | WBC, Follow up, n=255 |
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Retigabine | 0.003 | 0.013 | 0.001 | 0.021 | 0.003 | 0.005 | 0.000 | 0.003 | 0.002 | 0.002 | 0.003 | 0.001 | 0.005 | 0.008 | 0.005 | 0.007 | 0.002 | 0.002 | 0.005 | 0.006 | 0.006 | 0.005 | 0.006 | 0.005 | 0.009 | 0.004 | 0.009 | 0.004 | 0.013 | 0.010 | 0.010 | 0.008 | 0.005 | 0.003 | -0.003 | -0.020 | 0.001 | -0.006 | -0.018 | -0.006 | -0.002 | -0.009 | -0.010 | 0.001 | -0.003 | -0.005 | -0.012 | -0.008 | -0.007 | -0.013 | -0.007 | -0.004 | -0.006 | -0.007 | -0.018 | -0.008 | -0.008 | 0.009 | -0.001 | -0.008 | -0.002 | 0.000 | 0.000 | 0.015 | -0.022 | -0.004 | -0.007 | 0.032 | 0.041 | 0.062 | 0.185 | 0.043 | -0.020 | -0.010 | -0.127 | -0.029 | -0.147 | -0.089 | -0.124 | -0.104 | -0.137 | 0.007 | -0.118 | -0.130 | -0.103 | -0.091 | -0.099 | -0.103 | -0.135 | -0.114 | -0.057 | -0.117 | -0.055 | -0.049 | -0.034 | 0.004 | 0.077 | 0.000 | 0.113 | 0.110 | 0.166 | 0.133 | 0.144 | -0.001 | 0.172 | 0.141 | 0.193 | 0.278 | 0.367 | -0.130 | 0.022 | 0.024 | 0.085 | 0.017 | 0.071 | 0.022 | 0.073 | 0.022 | 0.080 | 0.028 | 0.023 | 0.019 | 0.038 | 0.056 | 0.047 | 0.049 | 0.040 | 0.037 | 0.033 | 0.065 | 0.043 | 0.044 | 0.028 | 0.027 | 0.039 | 0.078 | 0.046 | 0.064 | 0.065 | 0.057 | 0.035 | 0.119 | 0.039 | 0.068 | 0.030 | -0.007 | 0.080 | 0.022 | -0.143 | -0.142 | -0.045 | 0.075 | -0.087 | -0.098 | 0.032 | 0.203 | 0.015 | 0.086 | 0.121 | 0.368 | 0.188 | 0.118 | 0.057 | 0.196 | 0.243 | 0.095 | 0.432 | 0.412 | 0.416 | 0.296 | 0.436 | 0.552 | 0.639 | 0.346 | 0.560 | 0.366 | 0.130 | 0.707 | 0.247 | 0.458 | -0.027 | 0.658 | 0.297 | 0.470 | -0.010 | 0.9 | 6.4 | 0.7 | 12.7 | -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 | -4.9 | 1.9 | -6.3 | -9.5 | 10.0 | -5.7 | 25.0 | -9.4 | -0.25 | -0.11 | -0.22 | 0.07 | -0.20 | -0.15 | -0.08 | 0.28 | -0.09 | -0.06 | 0.01 | 0.25 | 0.10 | 0.09 | -0.05 | 0.10 | 0.21 | -0.01 | 0.43 | 0.37 | 0.41 | 0.33 | 0.54 | 0.57 | 0.81 | 0.52 | 0.83 | 0.57 | 0.34 | 0.75 | 0.59 | 0.70 | 0.30 | 1.18 | 0.70 | 0.40 | 0.02 |
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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
Intervention | International units per liter (Mean) |
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| Alk. Phos., Visit 1 (Month 1), n=352 | Alk. Phos., Visit 1a (Month 2), n=1 | Alk. Phos., Visit 2 (Month 3), n=322 | Alk. Phos., Visit 2a (Month 4), n=1 | Alk. Phos., Visit 3 (Month 6), n=279 | Alk. Phos., Visit 4 (Month 9), n=248 | Alk. Phos., Visit 5 (Month 12), n=228 | Alk. Phos., Visit 6 (Month 16), n=200 | Alk. Phos., Visit 7 (Month 20), n=176 | Alk. Phos., Visit 8 (Month 24), n=163 | Alk. Phos., Visit 9 (Month 28), n=142 | Alk. Phos., Visit 10 (Month 32), n=126 | Alk. Phos., Visit 11 (Month 36), n=116 | Alk. Phos., Visit 12 (Month 40), n=108 | Alk. Phos., Visit 13 (Month 44), n=101 | Alk. Phos., Visit 14 (Month 48), n=101 | Alk. Phos., Visit 15 (Month 52), n=88 | Alk. Phos., Visit 16 (Month 56), n=76 | Alk. Phos., Visit 17 (Month 60), n=90 | Alk. Phos., Visit 18 (Month 64), n=55 | Alk. Phos., Visit 19 (Month 68), n=50 | Alk. Phos., Visit 20 (Month 72), n=58 | Alk. Phos., Visit 21 (Month 76), n=40 | Alk. Phos., Visit 22 (Month 80), n=35 | Alk. Phos., Visit 23 (Month 84), n=32 | Alk. Phos., Visit 24 (Month 88), n=28 | Alk. Phos., Visit 25 (Month 92), n=25 | Alk. Phos., Visit 26 (Month 96), n=26 | Alk. Phos., Visit 27 (Month 100), n=20 | Alk. Phos., Visit 28 (Month 104), n=16 | Alk. Phos., Visit 29 (Month 108), n=13 | Alk. Phos., Visit 30 (Month 112), n=4 | Alk. Phos., Visit 31 (Month 116), n=3 | Alk. Phos., Visit 32 (Month 120), n=1 | Alk. Phos., Follow up, n=261 | ALT, Visit 1 (Month 1), n=352 | ALT, Visit 1a (Month 2), n=1 | ALT, Visit 2 (Month 3), n=322 | ALT, Visit 2a (Month 4), n=1 | ALT, Visit 3 (Month 6), n=278 | ALT, Visit 4 (Month 9), n=246 | ALT, Visit 5 (Month 12), n=227 | ALT, Visit 6 (Month 16), n=200 | ALT, Visit 7 (Month 20), n=174 | ALT, Visit 8 (Month 24), n=163 | ALT, Visit 9 (Month 28), n=141 | ALT, Visit 10 (Month 32), n=126 | ALT, Visit 11 (Month 36), n=115 | ALT, Visit 12 (Month 40), n=107 | ALT, Visit 13 (Month 44), n=101 | ALT, Visit 14 (Month 48), n=99 | ALT, Visit 15 (Month 52), n=88 | ALT, Visit 16 (Month 56), n=75 | ALT, Visit 17 (Month 60), n=89 | ALT, Visit 18 (Month 64), n=54 | ALT, Visit 19 (Month 68), n=50 | ALT, Visit 20 (Month 72), n=58 | ALT, Visit 21 (Month 76), n=39 | ALT, Visit 22 (Month 80), n=35 | ALT, Visit 23 (Month 84), n=32 | ALT, Visit 24 (Month 88), n=28 | ALT, Visit 25 (Month 92), n=25 | ALT, Visit 26 (Month 96), n=26 | ALT, Visit 27 (Month 100), n=20 | ALT, Visit 28 (Month 104), n=16 | ALT, Visit 29 (Month 108), n=13 | ALT, Visit 30 (Month 112), n=4 | ALT, Visit 31 (Month 116), n=3 | ALT, Visit 32 (Month 120), n=1 | ALT, Follow up, n=259 | AST, Visit 1 (Month 1), n=352 | AST, Visit 1a (Month 2), n=1 | AST, Visit 2 (Month 3), n=322 | AST, Visit 2a (Month 4), n=1 | AST, Visit 3 (Month 6), n=278 | AST, Visit 4 (Month 9), n=246 | AST, Visit 5 (Month 12), n=227 | AST, Visit 6 (Month 16), n=200 | AST, Visit 7 (Month 20), n=174 | AST, Visit 8 (Month 24), n=162 | AST, Visit 9 (Month 28), n=141 | AST, Visit 10 (Month 32), n=126 | AST, Visit 11 (Month 36), n=115 | AST, Visit 12 (Month 40), n=106 | AST, Visit 13 (Month 44), n=101 | AST, Visit 14 (Month 48), n=99 | AST, Visit 15 (Month 52), n=87 | AST, Visit 16 (Month 56), n=74 | AST, Visit 17 (Month 60), n=89 | AST, Visit 18 (Month 64), n=54 | AST, Visit 19 (Month 68), n=50 | AST, Visit 20 (Month 72), n=58 | AST, Visit 21 (Month 76), n=39 | AST, Visit 22 (Month 80), n=35 | AST, Visit 23 (Month 84), n=32 | AST, Visit 24 (Month 88), n=28 | AST, Visit 25 (Month 92), n=25 | AST, Visit 26 (Month 96), n=26 | AST, Visit 27 (Month 100), n=20 | AST, Visit 28 (Month 104), n=16 | AST, Visit 29 (Month 108), n=13 | AST, Visit 30 (Month 112), n=4 | AST, Visit 31 (Month 116), n=3 | AST, Visit 32 (Month 120), n=1 | AST, Follow up, n=257 |
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Retigabine | -0.9 | -18.0 | -1.5 | 4.0 | -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 | -0.6 | 0.3 | 0.8 | 3.2 | 0.2 | -0.1 | 1.5 | 4.8 | 4.1 | 8.6 | 6.6 | 1.8 | 3.0 | 1.0 | -0.4 | 2.6 | -24.0 | 1.5 | 45.0 | 1.3 | -0.2 | 3.4 | 1.3 | 1.2 | 0.5 | 1.7 | 1.0 | 0.1 | 0.9 | 0.6 | 0.5 | 0.9 | 1.3 | 0.0 | -0.8 | -0.5 | 0.6 | 0.3 | 0.1 | -2.3 | -4.1 | -4.2 | -1.6 | -3.2 | -3.1 | -3.6 | -5.3 | 2.3 | 1.0 | 5.5 | 2.1 | -65.0 | 1.8 | 24.0 | 1.0 | 0.7 | 3.0 | 1.7 | 2.7 | 2.7 | 3.3 | 3.3 | 3.2 | 3.6 | 3.7 | 3.9 | 2.7 | 3.7 | 3.6 | 2.1 | 2.3 | 4.0 | 3.9 | 3.8 | 1.9 | 3.5 | 1.3 | 2.5 | 1.6 | 3.2 | 0.7 | -4.5 | 2.7 | 7.0 | 3.4 |
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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
Intervention | Percentage of days (Mean) |
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Retigabine | 76.8 |
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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
Intervention | Percentage of participants (Number) |
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Retigabine | 13 |
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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
Intervention | Percentage of participants (Number) |
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Retigabine | 52 |
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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
Intervention | Milliseconds (Mean) |
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| PR interval, Visit 1 (Month 1), n=355 | PR interval, Visit 2 (Month 3), n=324 | PR interval, Visit 3 (Month 6), n=278 | PR interval, Visit 4 (Month 9), n=245 | PR interval, Visit 5 (Month 12), n=233 | PR interval, Visit 8 (Month 24), n=158 | PR interval, Visit 11 (Month 36), n=113 | PR interval, Visit 14 (Month 48), n=98 | PR interval, Visit 17 (Month 60), n=87 | PR interval, Visit 20 (Month 72), n=52 | PR interval, Visit 23 (Month 84), n=30 | PR interval, Visit 26 (Month 96), n=22 | PR interval, Visit 29 (Month 108), n=13 | PR interval, Visit 32 (Month 120), n=1 | PR interval, Follow up, n=252 | QRS duration, Visit 1 (Month 1), n=357 | QRS duration, Visit 2 (Month 3), n=327 | QRS duration, Visit 3 (Month 6), n=282 | QRS duration, Visit 4 (Month 9), n=249 | QRS duration, Visit 5 (Month 12), n=235 | QRS duration, Visit 8 (Month 24), n=160 | QRS duration, Visit 11 (Month 36), n=116 | QRS duration, Visit 14 (Month 48), n=99 | QRS duration, Visit 17 (Month 60), n=89 | QRS duration, Visit 20 (Month 72), n=56 | QRS duration, Visit 23 (Month 84), n=32 | QRS duration Visit 26 (Month 96), n=23 | QRS duration, Visit 29 (Month 108), n=13 | QRS duration, Visit 32 (Month 120), n=1 | QRS duration, Follow up, n=254 | QT interval, Visit 1 (Month 1), n=357 | QT interval, Visit 2 (Month 3), n=324 | QT interval, Visit 3 (Month 6), n=278 | QT interval, Visit 4 (Month 9), n=246 | QT interval, Visit 5 (Month 12), n=232 | QT interval, Visit 8 (Month 24), n=157 | QT interval, Visit 11 (Month 36), n=112 | QT interval, Visit 14 (Month 48), n=96 | QT interval, Visit 17 (Month 60), n=89 | QT interval, Visit 20 (Month 72), n=56 | QT interval, Visit 23 (Month 84), n=32 | QT interval, Visit 26 (Month 96), n=23 | QT interval, Visit 29 (Month 108), n=13 | QT interval, Visit 32 (Month 120), n=1 | QT interval, Follow up, n=254 | QTc Bazett interval, Visit 1 (Month 1, n=357 | QTc Bazett interval, Visit 2 (Month 3), n=324 | QTc Bazett interval, Visit 3 (Month 6), n=278 | QTc Bazett interval, Visit 4 (Month 9, n=246 | QTc Bazett interval, Visit 5 (Month 12), n=232 | QTc Bazett interval, Visit 8 (Month 24), n=157 | QTc Bazett interval, Visit 11 (Month 36), n=112 | QTc Bazett interval, Visit 14 (Month 48), n=96 | QTc Bazett interval, Visit 17 (Month 60), n=89 | QTc Bazett interval, Visit 20 (Month 72), n=56 | QTc Bazett interval, Visit 23 (Month 84), n=32 | QTc Bazett interval, Visit 26 (Month 96, n=23 | QTc Bazett interval, Visit 29 (Month 108), n=13 | QTc Bazett interval, Visit 32 (Month 120), n=1 | QTc Bazett interval, Follow up, n=254 | QTc Friedericia interval, Visit 1 (Month 1),n=357 | QTc Friedericia interval Visit 2 (Month 3),n=324 | QTc Friedericia interval,Visit 3 (Month 6),n=278 | QTc Friedericia interval, Visit 4 (Month 9),n=246 | QTc Friedericia intervalVisit 5 (Month 12),n=232 | QTc Friedericia interval,Visit 8 (Month 24),n=157 | QTc Friedericia intervalVisit 11 (Month 36),n=112 | QTc Friedericia interval,Visit 14 (Month 48),n=96 | QTc Friedericia interval,Visit 17 (Month 60),n=89 | QTc Friedericia intervalVisit 20 (Month 72),n=56 | QTc Friedericia intervalVisit 23 (Month 84),n=32 | QTc Friedericia interval,Visit 26 (Month 96),n=23 | QTcFriedericia intervalVisit 29 (Month 108)n=13 | QTc Friedericia interval,Visit 32 (Month 120),n=1 | QTcFriedericia interval, Follow up,n=254 |
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Retigabine | 0.1 | -0.4 | -1.0 | -1.7 | -1.7 | -2.1 | -1.6 | 0.3 | 0.7 | 0.9 | -3.5 | -4.4 | -1.9 | -23.7 | -1.3 | -0.6 | -1.1 | -1.2 | -1.4 | -0.1 | -1.1 | 1.5 | 1.1 | 3.3 | 5.2 | 3.4 | 3.5 | 1.2 | 10.7 | -0.1 | 5.5 | 4.8 | 5.3 | 3.9 | 5.0 | 3.4 | 8.8 | 7.0 | 7.9 | 12.4 | 8.4 | 4.0 | 0.8 | 64.0 | 1.2 | 1.2 | 1.6 | 3.4 | 4.4 | 2.3 | 6.6 | 4.5 | 5.6 | 12.4 | 15.6 | 18.7 | 19.7 | 17.6 | 0.7 | 4.9 | 2.7 | 2.7 | 4.0 | 4.1 | 3.2 | 5.4 | 5.9 | 6.1 | 10.8 | 14.4 | 15.0 | 14.3 | 11.6 | 23.7 | 3.5 |
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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
Intervention | Participants (Number) |
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Retigabine | 115 |
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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
Intervention | Participants (Number) |
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Retigabine | 22 |
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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
Intervention | Participants (Number) |
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Retigabine | 36 |
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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
Intervention | Participants (Count of Participants) |
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SFUCP | 7 |
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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
Intervention | Points on a scale (Mean) |
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| pH, Visit 1 (Month 1), n=349 | pH, Visit 1a (Month 2), n=1 | pH, Visit 2 (Month 3), n=313 | pH, Visit 3 (Month 6), n=270 | pH, Visit 4 (Month 9), n=245 | pH, Visit 5 (Month 12), n=222 | pH, Visit 6 (Month 16), n=196 | pH, Visit 7 (Month 20), n=170 | pH, Visit 8 (Month 24), n=158 | pH, Visit 9 (Month 28), n=138 | pH, Visit 10 (Month 32), n=124 | pH, Visit 11 (Month 36), n=111 | pH, Visit 12 (Month 40), n=107 | pH, Visit 13 (Month 44), n=97 | pH, Visit 14 (Month 48), n=99 | pH, Visit 15 (Month 52), n=83 | pH, Visit 16 (Month 56), n=71 | pH, Visit 17 (Month 60), n=84 | pH, Visit 18 (Month 64), n=53 | pH, Visit 19 (Month 68), n=50 | pH, Visit 20 (Month 72), n=55 | pH, Visit 21 (Month 76), n=39 | pH, Visit 22 (Month 80), n=35 | pH, Visit 23 (Month 84), n=31 | pH, Visit 24 (Month 88), n=28 | pH, Visit 25 (Month 92), n=25 | pH, Visit 26 (Month 96), n=26 | pH, Visit 27 (Month 100), n=20 | pH, Visit 28 (Month 104), n=16 | pH, Visit 29 (Month 108), n=13 | pH, Visit 30 (Month 112), n=4 | pH, Visit 31 (Month 116), n=3 | pH, Visit 32 (Month 120), n=1 | pH, Follow up, n=248 |
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Retigabine | -0.13 | 0.50 | -0.09 | -0.07 | 0.02 | -0.02 | 0.07 | 0.04 | 0.09 | 0.17 | 0.17 | 0.26 | 0.30 | 0.36 | 0.38 | 0.27 | 0.34 | 0.32 | 0.33 | 0.42 | 0.27 | 0.36 | 0.23 | 0.35 | 0.29 | 0.36 | 0.21 | 0.45 | 0.13 | 0.77 | 0.50 | -0.17 | 0.00 | 0.22 |
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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
Intervention | Percentage of red blood cells in blood (Mean) |
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| Hematocrit, Visit 1 (Month 1), n=340 | Hematocrit, Visit 1a (Month 2), n=63 | Hematocrit, Visit 2 (Month 3), n=308 | Hematocrit, Visit 2a (Month 4), n=79 | Hematocrit, Visit 3 (Month 6), n=274 | Hematocrit, Visit 3a (Month 8), n=95 | Hematocrit, Visit 4 (Month 9), n=231 | Hematocrit, Visit 4a (Month 10), n=111 | Hematocrit, Visit 5 (Month 12), n=223 | Hematocrit, Visit 6 (Month 16), n=196 | Hematocrit, Visit 7 (Month 20), n=166 | Hematocrit, Visit 8 (Month 24), n=160 | Hematocrit, Visit 9 (Month 28), n=141 | Hematocrit, Visit 10 (Month 32), n=122 | Hematocrit, Visit 11 (Month 36), n=113 | Haematocrit, Visit 12 (Month 40), n=106 | Hematocrit, Visit 13 (Month 44), n=95 | Hematocrit, Visit 14 (Month 48), n=100 | Hematocrit, Visit 15 (Month 52), n=88 | Hematocrit, Visit 16 (Month 56), n=74 | Haematocrit, Visit 17 (Month 60), n=88 | Hematocrit, Visit 18 (Month 64), n=51 | Hematocrit, Visit 19 (Month 68), n=50 | Hematocrit, Visit 20 (Month 72), n=55 | Hematocrit, Visit 21 (Month 76), n=39 | Hematocrit, Visit 22 (Month 80), n=34 | Hematocrit, Visit 23 (Month 84), n=30 | Hematocrit, Visit 24 (Month 88), n=26 | Hematocrit, Visit 25 (Month 92), n=24 | Hematocrit, Visit 26 (Month 96), n=24 | Hematocrit, Visit 27 (Month 100), n=20 | Hematocrit, Visit 28 (Month 104), n=16 | Hematocrit, Visit 29 (Month 108), n=13 | Hematocrit, Visit 30 (Month 112), n=4 | Hematocrit, Visit 31 (Month 116), n=3 | Hematocrit, Visit 32 (Month 120), n=1 | Hematocrit,Follow up, n=253 |
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Retigabine | -0.009 | -0.005 | -0.004 | -0.012 | -0.005 | -0.009 | -0.002 | -0.004 | -0.004 | -0.003 | -0.001 | 0.000 | 0.005 | 0.004 | -0.001 | 0.006 | 0.003 | -0.003 | -0.001 | -0.001 | 0.000 | 0.009 | 0.008 | 0.004 | 0.010 | 0.015 | 0.000 | 0.005 | 0.016 | 0.013 | 0.016 | 0.016 | -0.002 | 0.000 | 0.033 | 0.080 | 0.003 |
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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
Intervention | 10^12 cells per liter (Mean) |
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| RBC, Visit 1 (Month 1), n=349 | RBC, Visit 1a (Month 2), n=65 | RBC, Visit 2 (Month 3), n=316 | RBC, Visit 2a (Month 4), n=82 | RBC, Visit 3 (Month 6), n=279 | RBC, Visit 3a (Month 8), n=99 | RBC, Visit 4 (Month 9), n=244 | RBC, Visit 4a (Month 10), n=113 | RBC, Visit 5 (Month 12), n=226 | RBC, Visit 6 (Month 16), n=199 | RBC, Visit 7 (Month 20), n=174 | RBC, Visit 8 (Month 24), n=164 | RBC, Visit 9 (Month 28), n=142 | RBC, Visit 10 (Month 32), n=126 | RBC, Visit 11 (Month 36), n=115 | RBC, Visit 12 (Month 40), n=109 | RBC, Visit 13 (Month 44), n=98 | RBC, Visit 14 (Month 48), n=101 | RBC, Visit 15 (Month 52), n=88 | RBC, Visit 16 (Month 56), n=76 | RBC, Visit 17 (Month 60), n=89 | RBC, Visit 18 (Month 64), n=54 | RBC, Visit 19 (Month 68), n=50 | RBC, Visit 20 (Month 72), n=55 | RBC, Visit 21 (Month 76), n=40 | RBC, Visit 22 (Month 80), n=35 | RBC, Visit 23 (Month 84), n=32 | RBC, Visit 24 (Month 88), n=27 | RBC, Visit 25 (Month 92), n=25 | RBC, Visit 26 (Month 96), n=24 | RBC, Visit 27 (Month 100), n=20 | RBC, Visit 28 (Month 104), n=16 | RBC, Visit 29 (Month 108), n=13 | RBC, Visit 30 (Month 112), n=4 | RBC, Visit 31 (Month 116), n=3 | RBC, Visit 32 (Month 120), n=1 | RBC, Follow up, n=256 |
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Retigabine | -0.07 | 0.00 | -0.02 | -0.06 | -0.04 | -0.05 | -0.03 | -0.02 | -0.04 | -0.01 | -0.02 | -0.03 | 0.00 | -0.05 | -0.09 | -0.02 | -0.06 | -0.10 | -0.08 | -0.08 | -0.07 | -0.01 | 0.01 | -0.03 | 0.02 | 0.09 | 0.00 | 0.00 | 0.05 | 0.06 | 0.13 | 0.14 | -0.04 | 0.08 | 0.10 | 0.00 | -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
Intervention | Grams per liter (Mean) |
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| Hemoglobin, Visit 1 (Month 1), n=349 | Hemoglobin, Visit 1a (Month 2), n=65 | Hemoglobin, Visit 2 (Month 3), n=316 | Hemoglobin, Visit 2a (Month 4), n=82 | Hemoglobin, Visit 3 (Month 6), n=279 | Hemoglobin, Visit 3a (Month 8), n=99 | Hemoglobin, Visit 4 (Month 9), n=244 | Hemoglobin, Visit 4a (Month 10), n=113 | Hemoglobin, Visit 5 (Month 12), n=226 | Hemoglobin, Visit 6 (Month 16), n=199 | Hemoglobin, Visit 7 (Month 20), n=174 | Hemoglobin, Visit 8 (Month 24), n=164 | Hemoglobin, Visit 9 (Month 28), n=142 | Hemoglobin, Visit 10 (Month 32), n=126 | Hemoglobin, Visit 11 (Month 36), n=115 | Hemoglobin, Visit 12 (Month 40), n=109 | Hemoglobin, Visit 13 (Month 44), n=98 | Hemoglobin, Visit 14 (Month 48), n=101 | Hemoglobin, Visit 15 (Month 52), n=88 | Hemoglobin, Visit 16 (Month 56), n=76 | Hemoglobin, Visit 17 (Month 60), n=89 | Hemoglobin, Visit 18 (Month 64), n=54 | Hemoglobin, Visit 19 (Month 68), n=50 | Hemoglobin, Visit 20 (Month 72), n=55 | Hemoglobin, Visit 21 (Month 76), n=40 | Hemoglobin, Visit 22 (Month 80), n=35 | Hemoglobin, Visit 23 (Month 84), n=32 | Hemoglobin, Visit 24 (Month 88), n=27 | Hemoglobin, Visit 25 (Month 92), n=25 | Hemoglobin, Visit 26 (Month 96), n=24 | Hemoglobin, Visit 27 (Month 100), n=20 | Hemoglobin, Visit 28 (Month 104), n=16 | Hemoglobin, Visit 29 (Month 108), n=13 | Hemoglobin, Visit 30 (Month 112), n=4 | Hemoglobin, Visit 31 (Month 116), n=3 | Hemoglobin, Visit 32 (Month 120), n=1 | Hemoglobin, Follow up, n=256 |
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Retigabine | -2.6 | -1.8 | -0.8 | -3.3 | -1.3 | -3.0 | -0.7 | -2.0 | -1.4 | -0.4 | -0.6 | -0.3 | 1.2 | 0.3 | -1.0 | 0.4 | -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 | -12.5 | 3.0 | 25.0 | -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
Intervention | Milliliters (Mean) |
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| PVR urine volume, Visit 1 (Month 1), n=337 | PVR urine volume, Visit 2 (Month 3), n=307 | PVR urine volume, Visit 5 (Month 12), n=223 | PVR urine volume, Visit 8 (Month 24), n=111 | PVR urine volume, Visit 11 (Month 36), n=106 | PVR urine volume, Visit 14 (Month 48), n=96 | PVR urine volume, Visit 17 (Month 60), n=77 | PVR urine volume, Visit 20 (Month 72), n=53 | PVR urine volume, Visit 23 (Month 84), n=29 | PVR urine volume, Visit 26 (Month 96), n=24 | PVR urine volume, Visit 29 (Month 108), n=10 | PVR urine volume, Follow up, n=186 |
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Retigabine | 4.6 | 4.1 | 4.1 | 5.5 | 5.0 | -2.3 | 22.2 | 7.1 | 15.7 | 2.0 | 21.9 | -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
Intervention | Scores on a scale (Mean) |
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| Final QOLIE-31-P Score, Visit 2 (Month 3), n=296 | Final QOLIE-31-P Score, Visit 3 (Month 6), n=262 | Final QOLIE-31-P Score, Visit 4 (Month 9), n=229 | Final QOLIE-31-P Score, Visit 5 (Month 12), n=214 | Final QOLIE-31-P Score, Visit 8 (Month 24), n=142 | Final QOLIE-31-P Score, Visit 11 (Month 36), n=97 | Final QOLIE-31-P Score, Visit 14 (Month 48), n=83 | Final QOLIE-31-P Score Visit 17 (Month 60), n=68 | Final QOLIE-31-P Score Visit 20 (Month 72), n=47 | Final QOLIE-31-P Score Visit 23 (Month 84), n=26 | Final QOLIE-31-P Score Visit 26 (Month 96), n=24 | Final QOLIE-31-P Score Visit 29 (Month 108), n=12 | Final QOLIE-31-P Score Visit 32 (Month 120), n=1 | Final QOLIE-31-P Score, Follow up, n=224 |
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Retigabine | 1.33 | 0.87 | 0.27 | 1.24 | 3.76 | 2.77 | 0.78 | 2.37 | 3.07 | 4.31 | 4.07 | 6.35 | 14.36 | -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
Intervention | Millimeters of mercury (Mean) |
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| Supine DBP, Visit 1 (Month 1), n=358 | Supine DBP, Visit 2 (Month 3), n=328 | Supine DBP, Visit 3 (Month 6), n=287 | Supine DBP, Visit 4 (Month 9), n=251 | Supine DBP, Visit 5 (Month 12), n=235 | Supine DBP, Visit 6 (Month 16), n=202 | Supine DBP, Visit 7 (Month 20), n=181 | Supine DBP, Visit 8 (Month 24), n=167 | Supine DBP, Visit 9 (Month 28), n=147 | Supine DBP, Visit 10 (Month 32), n=128 | Supine DBP, Visit 11 (Month 36), n=121 | Supine DBP,Visit 12 (Month 40), n=112 | Supine DBP, Visit 13 (Month 44), n=105 | Supine DBP, Visit 14 (Month 48), n=104 | Supine DBP, Visit 15 (Month 52), n=91 | Supine DBP, Visit 16 (Month 56), n=77 | Supine DBP, Visit 17 (Month 60), n=92 | Supine DBP, Visit 18 (Month 64), n=58 | Supine DBP, Visit 19 (Month 68), n=53 | Supine DBP, Visit 20 (Month 72), n=61 | Supine DBP, Visit 21 (Month 76), n=43 | Supine DBP, Visit 22 (Month 80), n=37 | Supine DBP, Visit 23 (Month 84), n=32 | Supine DBP, Visit 24 (Month 88), n=29 | Supine DBP, Visit 25 (Month 92), n=25 | Supine DBP, Visit 26 (Month 96), n=26 | Supine DBP, Visit 27 (Month 100), n=20 | Supine DBP, Visit 28 (Month 104), n=17 | Supine DBP, Visit 29 (Month 108), n=13 | Supine DBP, Visit 30 (Month 112), n=4 | Supine DBP, Visit 31 (Month 116), n=3 | Supine DBP, Visit 32 (Month 120), n=1 | Supine DBP, Follow up, n=267 | Standing DBP, Visit 1 (Month 1), n=357 | Standing DBP, Visit 2 (Month 3), n=328 | Standing DBP, Visit 3 (Month 6), n=287 | Standing DBP, Visit 4 (Month 9), n=251 | Standing DBP, Visit 5 (Month 12), n=235 | Standing DBP, Visit 6 (Month 16), n=202 | Standing DBP, Visit 7 (Month 20), n=181 | Standing DBP, Visit 8 (Month 24), n=167 | Standing DBP, Visit 9 (Month 28), n=147 | Standing DBP, Visit 10 (Month 32), n=128 | Standing DBP, Visit 11 (Month 36), n=121 | Standing DBP, Visit 12 (Month 40), n=111 | Standing DBP, Visit 13 (Month 44), n=105 | Standing DBP, Visit 14 (Month 48), n=104 | Standing DBP, Visit 15 (Month 52), n=91 | Standing DBP, Visit 16 (Month 56), n=77 | Standing DBP, Visit 17 (Month 60), n=92 | Standing DBP, Visit 18 (Month 64), n=58 | Standing DBP, Visit 19 (Month 68), n=53 | Standing DBP, Visit 20 (Month 72), n=61 | Standing DBP, Visit 21 (Month 76), n=43 | Standing DBP, Visit 22 (Month 80), n=37 | Standing DBP, Visit 23 (Month 84), n=32 | Standing DBP, Visit 24 (Month 88), n=29 | Standing DBP, Visit 25 (Month 92), n=25 | Standing DBP, Visit 26 (Month 96), n=26 | Standing DBP, Visit 27 (Month 100), n=20 | Standing DBP, Visit 28 (Month 104), n=17 | Standing DBP, Visit 29 (Month 108), n=13 | Standing DBP, Visit 30 (Month 112), n=4 | Standing DBP, Visit 31 (Month 116), n=3 | Standing DBP, Visit 32 (Month 120), n=1 | Standing DBP, Follow up, n=267 | Supine SBP, Visit 1 (Month 1), n=358 | Supine SBP, Visit 2 (Month 3), n=328 | Supine SBP, Visit 3 (Month 6), n=287 | Supine SBP, Visit 4 (Month 9), n=251 | Supine SBP, Visit 5 (Month 12), n=235 | Supine SBP, Visit 6 (Month 16), n=202 | Supine SBP, Visit 7 (Month 20), n=181 | Supine SBP, Visit 8 (Month 24), n=167 | Supine SBP, Visit 9 (Month 28), n=147 | Supine SBP, Visit 10 (Month 32), n=128 | Supine SBP, Visit 11 (Month 36), n=121 | Supine SBP, Visit 12 (Month 40), n=112 | Supine SBP, Visit 13 (Month 44), n=105 | Supine SBP, Visit 14 (Month 48), n=104 | Supine SBP, Visit 15 (Month 52), n=91 | Supine SBP, Visit 16 (Month 56), n=77 | Supine SBP, Visit 17 (Month 60), n=92 | Supine SBP, Visit 18 (Month 64), n=58 | Supine SBP, Visit 19 (Month 68), n=53 | Supine SBP, Visit 20 (Month 72), n=61 | Supine SBP, Visit 21 (Month 76), n=43 | Supine SBP, Visit 22 (Month 80), n=37 | Supine SBP, Visit 23 (Month 84), n=32 | Supine SBP, Visit 24 (Month 88), n=29 | Supine SBP, Visit 25 (Month 92), n=25 | Supine SBP, Visit 26 (Month 96), n=26 | Supine SBP, Visit 27 (Month 100), n=20 | Supine SBP, Visit 28 (Month 104), n=17 | Supine SBP, Visit 29 (Month 108), n=13 | Supine SBP, Visit 30 (Month 112), n=4 | Supine SBP, Visit 31 (Month 116), n=3 | Supine SBP, Visit 32 (Month 120), n=1 | Supine SBP, Follow up, n=267 | Standing SBP, Visit 1 (Month 1), n=357 | Standing SBP, Visit 2 (Month 3), n=328 | Standing SBP, Visit 3 (Month 6), n=287 | Standing SBP, Visit 4 (Month 9), n=251 | Standing SBP, Visit 5 (Month 12), n=235 | Standing SBP, Visit 6 (Month 16), n=202 | Standing SBP, Visit 7 (Month 20), n=181 | Standing SBP, Visit 8 (Month 24), n=167 | Standing SBP, Visit 9 (Month 28), n=147 | Standing SBP, Visit 10 (Month 32), n=128 | Standing SBP, Visit 11 (Month 36), n=121 | Standing SBP, Visit 12 (Month 40), n=111 | Standing SBP, Visit 13 (Month 44), n=105 | Standing SBP, Visit 14 (Month 48), n=104 | Standing SBP, Visit 15 (Month 52), n=91 | Standing SBP, Visit 16 (Month 56), n=77 | Standing SBP, Visit 17 (Month 60), n=92 | Standing SBP, Visit 18 (Month 64), n= 58 | Standing SBP, Visit 19 (Month 68), n=53 | Standing SBP, Visit 20 (Month 72), n=61 | Standing SBP, Visit 21 (Month 76), n=43 | Standing SBP, Visit 22 (Month 80), n=37 | Standing SBP, Visit 23 (Month 84), n=32 | Standing SBP, Visit 24 (Month 88), n=29 | Standing SBP, Visit 25 (Month 92), n=25 | Standing SBP, Visit 26 (Month 96), n=26 | Standing SBP, Visit 27 (Month 100), n=20 | Standing SBP, Visit 28 (Month 104), n=17 | Standing SBP, Visit 29 (Month 108), n=13 | Standing SBP, Visit 30 (Month 112), n=4 | Standing SBP, Visit 31 (Month 116), n=3 | Standing SBP, Visit 32 (Month 120), n=1 | Standing SBP, Follow up, n=267 |
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Retigabine | 0.4 | 0.3 | -0.2 | 0.0 | 0.7 | 1.0 | 0.4 | 0.4 | 1.5 | 0.0 | 1.0 | 2.0 | 0.5 | 0.0 | 0.1 | 1.2 | -1.0 | 1.6 | 0.6 | 1.3 | 3.2 | 1.8 | -1.4 | 3.4 | 2.3 | 1.5 | 1.5 | 3.4 | 0.5 | 4.0 | 11.0 | -2.0 | 1.3 | 0.6 | 0.2 | -0.1 | 0.2 | 0.8 | 0.3 | 0.4 | 0.2 | 0.3 | -0.6 | 0.9 | 1.4 | -0.2 | 0.3 | -1.5 | -0.3 | -1.5 | 0.5 | 0.0 | 0.3 | 1.4 | 0.3 | -0.4 | 1.6 | 1.0 | 1.6 | 0.2 | 2.8 | -0.5 | 1.3 | 8.0 | -1.0 | 2.0 | -0.2 | -0.4 | 0.5 | 0.0 | 0.5 | 0.7 | -0.5 | -0.4 | 0.2 | 0.3 | 0.2 | 1.3 | 0.1 | -1.1 | -0.7 | 2.6 | -0.2 | 1.8 | 1.1 | 2.5 | 4.4 | 2.3 | 1.1 | 2.7 | 2.8 | 2.9 | 2.6 | 5.8 | -2.2 | 8.5 | 13.7 | 11.0 | 1.2 | -1.2 | -0.7 | -0.2 | -0.7 | -0.7 | -0.3 | -0.8 | -0.5 | -0.3 | -0.1 | 0.7 | 2.7 | -1.3 | -1.6 | -1.2 | 0.9 | -0.7 | 0.6 | 0.2 | 0.5 | 3.5 | 0.9 | -0.8 | -0.6 | -1.6 | -0.2 | 0.0 | 2.9 | -2.2 | 1.8 | 9.0 | 10.0 | 1.4 |
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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
Intervention | Scores on a scale (Mean) |
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| AUA Overall Score, Visit 1 (Month 1), n=348 | AUA Overall Score, Visit 2 (Month 3), n=325 | AUA Overall Score, Visit 5 (Month 12), n=228 | AUA Overall Score, Visit 8 (Month 24), n=114 | AUA Overall Score, Visit 11 (Month 36), n=115 | AUA Overall Score, Visit 14 (Month 48), n=102 | AUA Overall Score, Visit 17 (Month 60), n=87 | AUA Overall Score, Visit 20 (Month 72), n=56 | AUA Overall Score, Visit 23 (Month 84), n=32 | AUA Overall Score, Visit 26 (Month 96), n=26 | AUA Overall Score, Visit 29 (Month 108), n=13 | AUA Overall Score, Visit 32 (Month 120), n=1 | AUA Overall Score, Follow up, n=217 |
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Retigabine | -0.4 | -0.5 | -0.5 | -0.5 | -0.3 | -0.6 | -0.4 | -0.1 | 0.8 | 0.5 | 0.0 | 0.0 | 0.0 |
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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
Intervention | Grams per liter (Mean) |
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| Total Protein, Visit 1 (Month 1), n=352 | Total Protein, Visit 1a (Month 2), n=1 | Total Protein, Visit 2 (Month 3), n=322 | Total Protein, Visit 2a (Month 4), n=1 | Total Protein, Visit 3 (Month 6), n=279 | Total Protein, Visit 4 (Month 9), n=248 | Total Protein, Visit 5 (Month 12), n=228 | Total Protein, Visit 6 (Month 16), n=200 | Total Protein, Visit 7 (Month 20), n=176 | Total Protein, Visit 8 (Month 24), n=163 | Total Protein, Visit 9 (Month 28), n=142 | Total Protein, Visit 10 (Month 32), n=126 | Total Protein, Visit 11 (Month 36), n=116 | Total Protein, Visit 12 (Month 40), n=108 | Total Protein, Visit 13 (Month 44), n=101 | Total Protein, Visit 14 (Month 48), n=101 | Total Protein, Visit 15 (Month 52), n=88 | Total Protein, Visit 16 (Month 56), n=76 | Total Protein, Visit 17 (Month 60), n=90 | Total Protein, Visit 18 (Month 64), n=55 | Total Protein, Visit 19 (Month 68), n=50 | Total Protein, Visit 20 (Month 72), n=58 | Total Protein, Visit 21 (Month 76), n=40 | Total Protein, Visit 22 (Month 80), n=35 | Total Protein, Visit 23 (Month 84), n=32 | Total Protein, Visit 24 (Month 88), n=28 | Total Protein, Visit 25 (Month 92), n=25 | Total Protein, Visit 26 (Month 96), n=26 | Total Protein, Visit 27 (Month 100), n=20 | Total Protein, Visit 28 (Month 104), n=16 | Total Protein, Visit 29 (Month 108), n=13 | Total Protein, Visit 30 (Month 112), n=4 | Total Protein, Visit 31 (Month 116), n=3 | Total Protein, Visit 32 (Month 120), n=1 | Total Protein, Follow up, n=261 |
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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 | -2.1 | 0.8 | -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
Intervention | Ratio (Mean) |
---|
| Specific gravity, Visit 1 (Month 1), n=348 | Specific gravity, Visit 1a (Month 2), n=1 | Specific gravity, Visit 2 (Month 3), n=312 | Specific gravity, Visit 3 (Month 6), n=270 | Specific gravity, Visit 4 (Month 9), n=243 | Specific gravity, Visit 5 (Month 12), n=221 | Specific gravity, Visit 6 (Month 16), n=196 | Specific gravity, Visit 7 (Month 20), n=170 | Specific gravity, Visit 8 (Month 24), n=157 | Specific gravity, Visit 9 (Month 28), n=137 | Specific gravity, Visit 10 (Month 32), n=124 | Specific gravity, Visit 11 (Month 36), n=111 | Specific gravity, Visit 12 (Month 40), n=106 | Specific gravity, Visit 13 (Month 44), n=97 | Specific gravity, Visit 14 (Month 48), n=99 | Specific gravity, Visit 15 (Month 52), n=83 | Specific gravity, Visit 16 (Month 56), n=71 | Specific gravity, Visit 17 (Month 60), n=84 | Specific gravity, Visit 18 (Month 64), n=53 | Specific gravity, Visit 19 (Month 68), n=50 | Specific gravity, Visit 20 (Month 72), n=55 | Specific gravity, Visit 21 (Month 76), n=39 | Specific gravity, Visit 22 (Month 80), n=35 | Specific gravity, Visit 23 (Month 84), n=31 | Specific gravity, Visit 24 (Month 88), n=28 | Specific gravity, Visit 25 (Month 92), n=25 | Specific gravity, Visit 26 (Month 96), n=26 | Specific gravity, Visit 27 (Month 100), n=20 | Specific gravity, Visit 28 (Month 104), n=16 | Specific gravity, Visit 29 (Month 108), n=13 | Specific gravity, Visit 30 (Month 112), n=4 | Specific gravity, Visit 31 (Month 116), n=3 | Specific gravity, Visit 32 (Month 120), n=1 | Specific gravity, Follow up, n=247 |
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Retigabine | -0.0011 | 0.0000 | -0.0011 | 0.0003 | 0.0002 | -0.0010 | 0.0006 | 0.0015 | 0.0002 | 0.0007 | 0.0001 | -0.0016 | 0.0004 | 0.0004 | 0.0000 | -0.0100 | 0.0003 | -0.0008 | 0.0006 | 0.0014 | -0.0021 | 0.0030 | 0.0015 | 0.0024 | 0.0043 | 0.0046 | 0.0035 | 0.0029 | 0.0026 | 0.0020 | 0.0020 | 0.0030 | -0.0010 | 0.0008 |
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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
Intervention | Percentage Probability of disc. (Number) |
---|
| Day 0, n=374 | Day 1, n=371 | Day 2, n=369 | Day 3, n=368 | Day 4, n=367 | Day 5, n=366 | Day 6, n=365 | Day 11, n=364 | Day 13, n=363 | Day 14, n=362 | Day 16, n=361 | Day 21, n=360 | Day 22, n=359 | Day 27, n=356 | Day 28, n=350 | Day 29, n=348 | Day 30, n=344 | Day 32, n=343 | Day 35, n=341 | Day 40, n=340 | Day 41, n=339 | Day 42, n=338 | Day 45, n=337 | Day 50, n=336 | Day 56, n=335 | Day 61, n=334 | Day 62, n=333 | Day 63, n=331 | Day 71, n=330 | Day 77, n=329 | Day 82, n=328 | Day 85, n=326 | Day 86, n=325 | Day 88, n=324 | Day 90, n=322 | Day 91, n=316 | Day 92, n=313 | Day 94, n=312 | Day 95, n=310 | Day 99, n=309 | Day 104, n=308 | Day 105, n=307 | Day 107, n=306 | Day 110, n=305 | Day 112, n=303 | Day 118, n=302 | Day 121, n=300 | Day 122, n=299 | Day 126, n=298 | Day 132, n=297 | Day 134, n=296 | Day 135, n=295 | Day 138, n=294 | Day 139, n=293 | Day 141, n=292 | Day 152, n=291 | Day 155, n=290 | Day 161, n=289 | Day 164, n=288 | Day 172, n=287 | Day 176, n=286 | Day 179, n=282 | Day 180, n=278 | Day 181, n=275 | Day 182, n=273 | Day 183, n=272 | Day 184, n=271 | Day 187, n=270 | Day 188, n=269 | Day 189, n=268 | Day 192, n=267 | Day 195, n=265 | Day 198, n=264 | Day 199, n=263 | Day 204, n=262 | Day 214, n=261 | Day 216, n=260 | Day 218, n=259 | Day 221, n=258 | Day 228, n=257 | Day 231, n=256 | Day 233, n=255 | Day 235, n=254 | Day 236, n=253 | Day 237, n=251 | Day 252, n=250 | Day 260, n=249 | Day 264, n=248 | Day 265, n=247 | Day 269, n=246 | Day 270, n=245 | Day 272, n=240 | Day 274, n=239 | Day 275, n=238 | Day 276, n=236 | Day 278, n=235 | Day 279, n=234 | Day 292, n=233 | Day 299, n=231 | Day 301, n=230 | Day 310, n=229 | Day 315, n=228 | Day 316, n=227 | Day 317, n=226 | Day 322, n=225 | Day 325, n=224 | Day 339, n=223 | Day 351, n=222 | Day 357, n=221 | Day 358, n=219 | Day 363, n=218 | Day 372, n=217 | Day 375, n=216 | Day 377, n=215 | Day 416, n=214 | Day 419, n=213 | Day 425, n=212 | Day 429, n=211 | Day 437, n=210 | Day 447, n=209 | Day 455, n=208 | Day 458, n=207 | Day 460, n=206 | Day 461, n=205 | Day 478, n=204 | Day 480, n=203 | Day 482, n=202 | Day 485, n=200 | Day 492, n=197 | Day 493, n=196 | Day 497, n=194 | Day 498, n=193 | Day 501, n=192 | Day 523, n=191 | Day 525, n=190 | Day 534, n=189 | Day 536, n=188 | Day 541, n=187 | Day 553, n=186 | Day 556, n=185 | Day 587, n=184 | Day 593, n=183 | Day 594, n=182 | Day 596, n=181 | Day 601, n=180 | Day 602, n=178 | Day 610, n=177 | Day 612, n=176 | Day 617, n=175 | Day 618, n=174 | Day 632, n=173 | Day 635, n=172 | Day 669, n=171 | Day 676, n=170 | Day 678, n=169 | Day 685, n=168 | Day 700, n=167 | Day 702, n=165 | Day 703, n=164 | Day 707, n=163 | Day 714, n=162 | Day 719, n=161 | Day 720, n=160 | Day 721, n=159 | Day 724, n=158 | Day 729, n=157 | Day 760, n=156 | Day 775, n=155 | Day 777, n=154 | Day 778, n=153 | Day 779, n=152 | Day 781, n=151 | Day 796, n=150 | Day 803, n=149 | Day 818, n=148 | Day 835, n=147 | Day 840, n=146 | Day 841, n=144 | Day 842, n=143 | Day 844, n=142 | Day 845, n=141 | Day 855, n=140 | Day 856, n=139 | Day 863, n=138 | Day 870, n=137 | Day 884, n=136 | Day 893, n=135 | Day 904, n=134 | Day 924, n=133 | Day 927, n=132 | Day 938, n=131 | Day 944, n=130 | Day 947, n=128 | Day 952, n=127 | Day 975, n=126 | Day 980, n=125 | Day 994, n=123 | Day 1067, n=122 | Day 1074, n=121 | Day 1084, n=120 | Day 1091, n=119 | Day 1129, n=118 | Day 1141, n=117 | Day 1142, n=116 | Day 1148, n=115 | Day 1196, n=114 | Day 1198, n=113 | Day 1206, n=112 | Day 1207, n=111 | Day 1211, n=110 | Day 1221, n=109 | Day 1231, n=108 | Day 1299, n=107 | Day 1316, n=106 | Day 1322, n=105 | Day 1389, n=104 | Day 1413, n=103 | Day 1436, n=102 | Day 1446, n=101 | Day 1450, n=100 | Day 1451, n=99 | Day 1452, n=98 | Day 1521, n=97 | Day 1541, n=96 | Day 1545, n=95 | Day 1547, n=94 | Day 1563, n=93 | Day 1567, n=92 | Day 1569, n=91 | Day 1589, n=90 | Day 1618, n=89 | Day 1619, n=88 | Day 1623, n=87 | Day 1632, n=86 | Day 1656, n=85 | Day 1660, n=84 | Day 1668, n=83 | Day 1672, n=82 | Day 1676, n=81 | Day 1680, n=80 | Day 1694, n=79 | Day 1697, n=78 | Day 1752, n=77 | Day 1756, n=76 | Day 1760, n=75 | Day 1792, n=74 | Day 1802, n=73 | Day 1807, n=72 | Day 1814, n=71 | Day 1819, n=70 | Day 1836, n=69 | Day 1849, n=68 | Day 1855, n=67 | Day 1887, n=66 | Day 1895, n=65 | Day 1904, n=64 | Day 1919, n=63 | Day 1920, n=62 | Day 1926, n=61 | Day 1928, n=60 | Day 1929, n=59 | Day 1931, n=58 | Day 1937, n=57 | Day 1951, n=56 | Day 2005, n=55 | Day 2037, n=54 | Day 2044, n=53 | Day 2092, n=52 | Day 2157, n=51 | Day 2161, n=50 | Day 2162, n=49 | Day 2182, n=48 | Day 2183, n=47 | Day 2184, n=46 | Day 2227, n=45 | Day 2281, n=44 | Day 2283, n=43 | Day 2285, n=42 | Day 2296, n=41 | Day 2317, n=40 | Day 2380, n=39 | Day 2395, n=37 | Day 2400, n=36 | Day 2405, n=35 | Day 2408, n=34 | Day 2415, n=33 | Day 2443, n=32 | Day 2525, n=31 | Day 2533, n=30 | Day 2537, n=29 | Day 2639, n=28 | Day 2664, n=27 | Day 2772, n=26 | Day 2793, n=25 | Day 2829, n=24 | Day 2870, n=23 | Day 2884, n=22 | Day 2973, n=21 | Day 2975, n=20 | Day 2998, n=19 | Day 3101, n=18 | Day 3118, n=17 | Day 3137, n=16 | Day 3144, n=15 | Day 3147, n=14 | Day 3185, n=13 | Day 3220, n=11 | Day 3231, n=10 | Day 3243, n=9 | Day 3246, n=8 | Day 3276, n=7 | Day 3277, n=6 | Day 3285, n=5 | Day 3318, n=4 | Day 3360, n=3 | Day 3483, n=2 | Day 3582, n=1 |
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Retigabine | 0.5 | 1.3 | 1.9 | 2.1 | 2.4 | 2.7 | 2.9 | 3.2 | 3.5 | 3.7 | 4.0 | 4.3 | 4.5 | 5.3 | 6.9 | 7.4 | 8.5 | 8.8 | 9.3 | 9.6 | 9.8 | 10.1 | 10.4 | 10.6 | 10.9 | 11.2 | 11.4 | 12.0 | 12.2 | 12.5 | 12.8 | 13.3 | 13.6 | 13.8 | 14.4 | 16.0 | 16.8 | 17.0 | 17.6 | 17.8 | 18.1 | 18.4 | 18.6 | 18.9 | 19.4 | 19.7 | 20.2 | 20.5 | 20.7 | 21.0 | 21.3 | 21.5 | 21.8 | 22.1 | 22.3 | 22.6 | 22.9 | 23.1 | 23.4 | 23.7 | 23.9 | 25.0 | 26.1 | 26.9 | 27.4 | 27.7 | 27.9 | 28.2 | 28.5 | 28.7 | 29.0 | 29.5 | 29.8 | 30.1 | 30.3 | 30.6 | 30.9 | 31.1 | 31.4 | 31.6 | 31.9 | 32.2 | 32.4 | 32.7 | 33.2 | 33.5 | 33.8 | 34.0 | 34.3 | 34.6 | 34.8 | 36.2 | 36.4 | 36.7 | 37.2 | 37.5 | 37.8 | 38.0 | 38.6 | 38.8 | 39.1 | 39.4 | 39.6 | 39.9 | 40.2 | 40.4 | 40.7 | 41.0 | 41.2 | 41.8 | 42.0 | 42.3 | 42.6 | 42.8 | 43.1 | 43.4 | 43.6 | 43.9 | 44.1 | 44.4 | 44.7 | 44.9 | 45.2 | 45.5 | 45.7 | 46.0 | 46.3 | 46.8 | 47.6 | 47.9 | 48.4 | 48.7 | 48.9 | 49.2 | 49.5 | 49.7 | 50.0 | 50.3 | 50.5 | 50.8 | 51.1 | 51.3 | 51.6 | 51.9 | 52.1 | 52.7 | 52.9 | 53.2 | 53.5 | 53.7 | 54.0 | 54.3 | 54.5 | 54.8 | 55.1 | 55.3 | 55.6 | 56.1 | 56.4 | 56.6 | 56.9 | 57.2 | 57.4 | 57.7 | 58.0 | 58.2 | 58.5 | 58.8 | 59.0 | 59.3 | 59.6 | 59.8 | 60.1 | 60.4 | 60.6 | 60.9 | 61.2 | 61.7 | 62.0 | 62.2 | 62.5 | 62.8 | 63.0 | 63.3 | 63.6 | 63.8 | 64.1 | 64.4 | 64.6 | 64.9 | 65.2 | 65.4 | 66.0 | 66.2 | 66.5 | 66.8 | 67.3 | 67.6 | 67.8 | 68.1 | 68.4 | 68.6 | 68.9 | 69.1 | 69.4 | 69.7 | 69.9 | 70.2 | 70.5 | 70.7 | 71.0 | 71.3 | 71.5 | 71.8 | 72.1 | 72.3 | 72.6 | 72.6 | 72.9 | 73.1 | 73.1 | 73.4 | 73.7 | 73.7 | 73.7 | 74.0 | 74.0 | 74.2 | 74.5 | 74.5 | 74.5 | 74.5 | 74.5 | 74.5 | 74.5 | 74.5 | 74.8 | 75.1 | 75.4 | 75.4 | 75.4 | 75.4 | 75.4 | 75.8 | 75.8 | 76.1 | 76.1 | 76.1 | 76.4 | 76.4 | 76.4 | 76.4 | 76.4 | 76.4 | 76.8 | 76.8 | 76.8 | 77.1 | 77.5 | 77.5 | 77.9 | 78.3 | 78.3 | 78.6 | 79.0 | 79.4 | 79.4 | 79.8 | 80.2 | 80.6 | 81.0 | 81.3 | 81.7 | 82.1 | 82.5 | 82.9 | 83.3 | 83.7 | 83.7 | 84.1 | 84.5 | 85.3 | 85.7 | 86.1 | 86.5 | 86.9 | 86.9 | 87.3 | 87.7 | 88.1 | 88.5 | 88.9 | 89.3 | 89.7 | 90.1 | 90.6 | 91.0 | 91.4 | 91.8 | 92.2 | 92.6 | 93.0 | 93.4 | 93.8 | 94.3 | 94.7 | 95.5 | 95.9 | 96.3 | 96.7 | 97.1 | 97.5 | 97.9 | 98.4 | 98.8 | 99.2 | 99.6 |
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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
Intervention | Participants (Count of Participants) |
---|
| Retinal pigmentary abnormality | Pigmentary abnormality of macula | Pigmentary abnormality of peripheral retina | Non-retinal ocular pigmentary abnormality |
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SFUCP | 0 | 1 | 2 | 8 |
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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
Intervention | Participants (Number) |
---|
| Any TEAE | Any TESAE |
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Retigabine | 324 | 78 |
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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
Intervention | Percentage of participants (Number) |
---|
| CSD in VA from initial examination, n=38 | CSD which can be explained (Form 2), n=34 | CSD which can not be explained (Form 2), n=34 |
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Retigabine | 13 | 12 | 0 |
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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
Intervention | Percentage of participants (Number) |
---|
| Any abnormal dermatologic discoloration | Abnormal discoloration of skin | Abnormal discoloration of lips | Abnormal discoloration of nails | Abnormal discoloration of mucosa | Abnormal discoloration of sun-exposed tissue | Abnormal discoloration of non sun-exposed tissue |
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Retigabine | 50 | 37 | 26 | 41 | 30 | 48 | 37 |
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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
Intervention | Percentage of participants (Number) |
---|
| Visit 1 (Month 1), A-NCS, n=356 | Visit 1 (Month 1), A-CS, n=356 | Visit 2 (Month 3), A-NCS, n=328 | Visit 2 (Month 3), A-CS, n=328 | Visit 3 (Month 6), A-NCS, n=287 | Visit 3 (Month 6), A-CS, n=287 | Visit 4 (Month 9), A-NCS, n=252 | Visit 4 (Month 9), A-CS, n=252 | Visit 5 (Month 12), A-NCS, n=234 | Visit 5 (Month 12), A-CS, n=234 | Visit 6 (Month 16), A-NCS, n=202 | Visit 6 (Month 16), A-CS, n=202 | Visit 7 (Month 20), A-NCS, n=179 | Visit 7 (Month 20), A-CS, n=179 | Visit 8 (Month 24), A-NCS, n=166 | Visit 8 (Month 24), A-CS, n=166 | Visit 9 (Month 28), A-NCS, n=146 | Visit 9 (Month 28), A-CS, n=146 | Visit 10 (Month 32), A-NCS, n=127 | Visit 10 (Month 32), A-CS, n=127 | Visit 11 (Month 36), A-NCS, n=121 | Visit 11 (Month 36), A-CS, n=121 | Visit 12 (Month 40), A-NCS, n=112 | Visit 12 (Month 40), A-CS, n=112 | Visit 13 (Month 44), A-NCS, n=105 | Visit 13 (Month 44), A-CS, n=105 | Visit 14 (Month 48), A-NCS, n=104 | Visit 14 (Month 48), A-CS, n=104 | Visit 15 (Month 52), A-NCS, n=91 | Visit 15 (Month 52), A-CS, n=91 | Visit 16 (Month 56), A-NCS, n=77 | Visit 16 (Month 56), A-CS, n=77 | Visit 17 (Month 60), A-NCS, n=89 | Visit 17 (Month 60), A-CS, n=89 | Visit 18 (Month 64), A-NCS, n=58 | Visit 18 (Month 64), A-CS, n=58 | Visit 19 (Month 68), A-NCS, n=53 | Visit 19 (Month 68), A-CS, n=53 | Visit 20 (Month 72), A-NCS, n=59 | Visit 20 (Month 72), A-CS, n=59 | Visit 21 (Month 76), A-NCS, n=43 | Visit 21 (Month 76), A-CS, n=43 | Visit 22 (Month 80), A-NCS, n=37 | Visit 22 (Month 80), A-CS, n=37 | Visit 23 (Month 84), A-NCS, n=32 | Visit 23 (Month 84), A-CS, n=32 | Visit 24 (Month 88), A-NCS, n=29 | Visit 24 (Month 88), A-CS, n=29 | Visit 25 (Month 92), A-NCS, n=25 | Visit 25 (Month 92), A-CS, n=25 | Visit 26 (Month 96), A-NCS, n=26 | Visit 26 (Month 96), A-CS, n=26 | Visit 27 (Month 100), A-NCS, n=19 | Visit 27 (Month 100), A-CS, n=19 | Visit 28 (Month 104), A-NCS, n=17 | Visit 28 (Month 104), A-CS, n=17 | Visit 29 (Month 108), A-NCS, n=13 | Visit 29 (Month 108), A-CS, n=13 | Follow up visit, A-NCS, n=263 | Follow up visit, A-CS, n=263 |
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Retigabine | 23 | 10 | 23 | 9 | 22 | 10 | 23 | 11 | 27 | 12 | 24 | 9 | 25 | 9 | 34 | 10 | 32 | 8 | 32 | 8 | 35 | 8 | 28 | 10 | 31 | 9 | 28 | 11 | 31 | 9 | 32 | 9 | 29 | 9 | 29 | 10 | 36 | 9 | 41 | 7 | 40 | 7 | 41 | 5 | 47 | 3 | 45 | 7 | 40 | 8 | 42 | 15 | 21 | 16 | 24 | 24 | 31 | 8 | 22 | 8 |
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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
Intervention | Beats per minute (Mean) |
---|
| Supine HR, Visit 1 (Month 1), n=358 | Supine HR, Visit 2 (Month 3), n=328 | Supine HR, Visit 3 (Month 6), n=287 | Supine HR, Visit 4 (Month 9), n=252 | Supine HR, Visit 5 (Month 12), n=235 | Supine HR, Visit 6 (Month 16), n=202 | Supine HR, Visit 7 (Month 20), n=181 | Supine HR, Visit 8 (Month 24), n=167 | Supine HR, Visit 9 (Month 28), n=147 | Supine HR, Visit 10 (Month 32), n=128 | Supine HR, Visit 11 (Month 36), n=121 | Supine HR, Visit 12 (Month 40), n=112 | Supine HR, Visit 13 (Month 44), n=105 | Supine HR, Visit 14 (Month 48), n=104 | Supine HR, Visit 15 (Month 52), n=91 | Supine HR, Visit 16 (Month 56), n=77 | Supine HR, Visit 17 (Month 60), n=92 | Supine HR, Visit 18 (Month 64), n=58 | Supine HR, Visit 19 (Month 68), n=53 | Supine HR, Visit 20 (Month 72), n=61 | Supine HR, Visit 21 (Month 76), n=43 | Supine HR, Visit 22 (Month 80), n=37 | Supine HR, Visit 23 (Month 84), n=32 | Supine HR, Visit 24 (Month 88), n=29 | Supine HR, Visit 25 (Month 92), n=25 | Supine HR, Visit 26 (Month 96), n=26 | Supine HR, Visit 27 (Month 100), n=20 | Supine HR, Visit 28 (Month 104), n=17 | Supine HR, Visit 29 (Month 108), n=13 | Supine HR, Visit 30 (Month 112), n=4 | Supine HR, Visit 31 (Month 116), n=3 | Supine HR, Visit 32 (Month 120), n=1 | Supine HR, Follow up, n=267 | Standing HR, Visit 1 (Month 1), n=357 | Standing HR, Visit 2 (Month 3), n=328 | Standing HR, Visit 3 (Month 6), n=287 | Standing HR, Visit 4 (Month 9), n=252 | Standing HR, Visit 5 (Month 12), n=235 | Standing HR, Visit 6 (Month 16), n=202 | Standing HR, Visit 7 (Month 20), n=181 | Standing HR, Visit 8 (Month 24), n=167 | Standing HR, Visit 9 (Month 28), n=147 | Standing HR, Visit 10 (Month 32), n=128 | Standing HR, Visit 11 (Month 36), n=121 | Standing HR, Visit 12 (Month 40), n=111 | Standing HR, Visit 13 (Month 44), n=105 | Standing HR, Visit 14 (Month 48), n=104 | Standing HR, Visit 15 (Month 52), n=91 | Standing HR, Visit 16 (Month 56), n=77 | Standing HR, Visit 17 (Month 60), n=92 | Standing HR, Visit 18 (Month 64), n=58 | Standing HR, Visit 19 (Month 68), n=52 | Standing HR, Visit 20 (Month 72), n=61 | Standing HR, Visit 21 (Month 76), n=43 | Standing HR, Visit 22 (Month 80), n=37 | Standing HR, Visit 23 (Month 84), n=32 | Standing HR, Visit 24 (Month 88), n=29 | Standing HR, Visit 25 (Month 92), n=25 | Standing HR, Visit 26 (Month 96), n=26 | Standing HR, Visit 27 (Month 100), n=20 | Syanding HR, Visit 28 (Month 104), n=17 | Standing HR, Visit 29 (Month 108), n=13 | Standing HR, Visit 30 (Month 112), n=4 | Standing HR, Visit 31 (Month 116), n=3 | Standing HR, Visit 32 (Month 120), n=1 | Standing HR, Follow up, n=267 |
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Retigabine | -0.4 | -0.5 | 0.1 | 0.7 | 0.0 | 1.8 | 2.3 | 1.9 | 2.7 | 3.0 | 0.8 | 3.3 | 1.8 | 1.0 | 2.0 | 2.5 | 0.9 | 5.5 | 2.4 | 2.1 | 2.8 | 5.1 | 3.5 | 3.2 | 3.9 | 2.1 | 3.1 | 3.3 | 0.5 | 3.8 | 7.7 | 11.0 | 2.1 | -0.1 | -0.2 | 0.3 | 1.7 | 0.1 | 1.6 | 1.4 | 1.9 | 1.6 | 2.2 | -0.6 | 2.6 | 2.8 | 0.8 | 3.1 | 1.3 | 0.6 | 4.6 | 1.3 | 0.7 | 0.3 | 2.9 | 2.3 | 2.4 | 3.6 | 3.1 | 5.2 | 6.2 | -0.2 | 2.3 | 7.3 | 10.0 | 2.2 |
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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
Intervention | Percentage of participants (Number) |
---|
| Visit 5 (Month 12), n=234 | Visit 8 (Month 24), n=166 | Visit 11 (Month 36), n=121 | Visit 14 (Month 48), n=104 | Visit 17 (Month 60), n=88 | Visit 20 (Month 72), n=58 | Visit 23 (Month 84), n=32 | Visit 26 (Month 96), n=26 | Visit 29 (Month 108), n=13 | Follow up visit, n=260 |
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Retigabine | 18 | 17 | 21 | 19 | 19 | 24 | 34 | 35 | 38 | 27 |
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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
Intervention | Percentage of participants (Number) |
---|
| Non-ret. Pig. Abn | ABP of sclera and/or conjunctiva | ABP of the cornea | ABP of the iris | ABP of the lens |
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Retigabine | 28 | 13 | 4 | 17 | 0 |
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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
Intervention | Percentage of participants (Number) |
---|
| RPA | PA in the macula | PA of the PR | PA in both the macula and PR | PA: location unspecified |
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Retigabine | 31 | 22 | 22 | 13 | 2 |
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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
Intervention | Days (Median) |
---|
| Pigmentary Abnormality of Macula, n=1 | Pigmentary Abnormality of Peripheral Retina, n=2 | Non-Retinal Ocular Pigmentary Abnormality, n=8 |
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SFUCP | 233.0 | 307.0 | 312.0 |
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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
Intervention | Days (Median) |
---|
| All, n=7 | Skin, n=6 | Lips, n=5 | Nails,n=7 | Mucosa, n=8 |
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SFUCP | 380.0 | 382.5 | 379.0 | 379.0 | 201.0 |
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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
Intervention | Percent 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
Intervention | Micromoles per liter (Mean) |
---|
| Creatinine, Visit 1 (Month 1), n=351 | Creatinine, Visit 1a (Month 2), n=1 | Creatinine, Visit 2 (Month 3), n=320 | Creatinine, Visit 2a (Month 4), n=1 | Creatinine, Visit 3 (Month 6), n=278 | Creatinine, Visit 4 (Month 9), n=247 | Creatinine, Visit 5 (Month 12), n=227 | Creatinine, Visit 6 (Month 16), n=199 | Creatinine, Visit 7 (Month 20), n=176 | Creatinine, Visit 8 (Month 24), n=161 | Creatinine, Visit 9 (Month 28), n=142 | Creatinine, Visit 10 (Month 32), n=126 | Creatinine, Visit 11 (Month 36), n=115 | Creatinine, Visit 12 (Month 40), n=108 | Creatinine, Visit 13 (Month 44), n=101 | Creatinine, Visit 14 (Month 48), n=101 | Creatinine, Visit 15 (Month 52), n=88 | Creatinine, Visit 16 (Month 56), n=75 | Creatinine, Visit 17 (Month 60), n=89 | Creatinine, Visit 18 (Month 64), n=55 | Creatinine, Visit 19 (Month 68), n=50 | Creatinine, Visit 20 (Month 72), n=58 | Creatinine, Visit 21 (Month 76), n=40 | Creatinine, Visit 22 (Month 80), n=35 | Creatinine, Visit 23 (Month 84), n=32 | Creatinine, Visit 24 (Month 88), n=28 | Creatinine, Visit 25 (Month 92), n=25 | Creatinine, Visit 26 (Month 96), n=26 | Creatinine, Visit 27 (Month 100), n=20 | Creatinine, Visit 28 (Month 104), n=16 | Creatinine, Visit 29 (Month 108), n=13 | Creatinine, Visit 30 (Month 112), n=4 | Creatinine, Visit 31 (Month 116), n=3 | Creatinine, Visit 32 (Month 120), n=1 | Creatinine, Follow up, n=260 | Total Bilirubin, Visit 1 (Month 1), n=351 | Total Bilirubin, Visit 1a (Month 2), n=1 | Total Bilirubin, Visit 2 (Month 3), n=322 | Total Bilirubin, Visit 2a (Month 4), n=1 | Total Bilirubin, Visit 3 (Month 6), n=278 | Total Bilirubin, Visit 4 (Month 9), n=245 | Total Bilirubin, Visit 5 (Month 12), n=227 | Total Bilirubin, Visit 6 (Month 16), n=200 | Total Bilirubin, Visit 7 (Month 20), n=176 | Total Bilirubin, Visit 8 (Month 24), n=162 | Total Bilirubin, Visit 9 (Month 28), n=141 | Total Bilirubin, Visit 10 (Month 32), n=126 | Total Bilirubin, Visit 11 (Month 36), n=116 | Total Bilirubin, Visit 12 (Month 40), n=107 | Total Bilirubin, Visit 13 (Month 44), n=101 | Total Bilirubin, Visit 14 (Month 48), n=100 | Total Bilirubin, Visit 15 (Month 52), n=88 | Total Bilirubin, Visit 16 (Month 56), n=76 | Total Bilirubin, Visit 17 (Month 60), n=90 | Total Bilirubin, Visit 18 (Month 64), n=55 | Total Bilirubin, Visit 19 (Month 68), n=51 | Total Bilirubin, Visit 20 (Month 72), n=58 | Total Bilirubin, Visit 21 (Month 76), n=40 | Total Bilirubin, Visit 22 (Month 80), n=35 | Total Bilirubin, Visit 23 (Month 84), n=32 | Total Bilirubin, Visit 24 (Month 88), n=28 | Total Bilirubin, Visit 25 (Month 92), n=25 | Total Bilirubin, Visit 26 (Month 96), n=26 | Total Bilirubin, Visit 27 (Month 100), n=20 | Total Bilirubin, Visit 28 (Month 104), n=16 | Total Bilirubin, Visit 29 (Month 108), n=13 | Total Bilirubin, Visit 30 (Month 112), n=4 | Total Bilirubin, Visit 31 (Month 116), n=3 | Total Bilirubin, Visit 32 (Month 120), n=1 | Total Bilirubin, Follow up, n=258 | Uric acid, Visit 1 (Month 1), n=352 | Uric acid, Visit 1a (Month 2), n=1 | Uric acid, Visit 2 (Month 3), n=322 | Uric acid, Visit 2a (Month 4), n=1 | Uric acid, Visit 3 (Month 6), n=279 | Uric acid, Visit 4 (Month 9), n=248 | Uric acid, Visit 5 (Month 12), n=228 | Uric acid, Visit 6 (Month 16), n=200 | Uric acid, Visit 7 (Month 20), n=176 | Uric acid, Visit 8 (Month 24), n=163 | Uric acid, Visit 9 (Month 28), n=142 | Uric acid, Visit 10 (Month 32), n=126 | Uric acid, Visit 11 (Month 36), n=116 | Uric acid, Visit 12 (Month 40), n=108 | Uric acid, Visit 13 (Month 44), n=101 | Uric acid, Visit 14 (Month 48), n=101 | Uric acid, Visit 15 (Month 52), n=88 | Uric acid, Visit 16 (Month 56), n=76 | Uric acid, Visit 17 (Month 60), n=90 | Uric acid, Visit 18 (Month 64), n=55 | Uric acid, Visit 19 (Month 68), n=50 | Uric acid, Visit 20 (Month 72), n=58 | Uric acid, Visit 21 (Month 76), n=40 | Uric acid, Visit 22 (Month 80), n=35 | Uric acid, Visit 23 (Month 84), n=32 | Uric acid, Visit 24 (Month 88), n=28 | Uric acid, Visit 25 (Month 92), n=25 | Uric acid, Visit 26 (Month 96), n=26 | Uric acid, Visit 27 (Month 100), n=20 | Uric acid, Visit 28 (Month 104), n=16 | Uric acid, Visit 29 (Month 108), n=13 | Uric acid, Visit 30 (Month 112), n=4 | Uric acid, Visit 31 (Month 116), n=3 | Uric acid, Visit 32 (Month 120), n=1 | Uric acid, Follow up, n=261 |
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Retigabine | 1.8 | 0.0 | 0.9 | 9.0 | 0.7 | 0.1 | 0.0 | 0.8 | 0.6 | 0.0 | -0.2 | 1.3 | -0.3 | 0.8 | 0.5 | -0.3 | 0.8 | 1.1 | -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 | -19.0 | 0.6 | 3.5 | 0.0 | 3.5 | 6.0 | 3.6 | 3.5 | 3.4 | 3.6 | 3.7 | 3.8 | 3.7 | 4.1 | 4.0 | 3.7 | 3.9 | 3.7 | 3.7 | 3.6 | 3.8 | 3.7 | 3.1 | 3.3 | 3.7 | 3.2 | 3.4 | 3.6 | 5.5 | 5.5 | 5.2 | 5.8 | 5.5 | 5.0 | 2.7 | 11.0 | 0.0 | 2.1 | 41.0 | 5.5 | 107.0 | 4.3 | 7.8 | 5.3 | 7.9 | 8.8 | 10.1 | 7.7 | 8.7 | 9.8 | 13.8 | 13.4 | 6.8 | 14.2 | 12.0 | 14.7 | 14.8 | 25.2 | 14.4 | 25.5 | 18.3 | 21.4 | 14.0 | 29.6 | 14.3 | 14.2 | -1.8 | 9.2 | 46.3 | -8.0 | -23.0 | 11.7 |
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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)
Intervention | Scores on a scale (Least Squares Mean) |
---|
1: Retigabine | 2.68 |
2: Placebo | 2.37 |
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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)
Intervention | Scores on a scale (Mean) |
---|
1: Retigabine | -4.14 |
2: Placebo | 0.00 |
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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)
Intervention | Scores 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)
Intervention | Scores 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)
Intervention | Scores 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).
Intervention | Hours (Mean) |
---|
1: Retigabine | 0.5 |
2: Placebo | 0.2 |
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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)
Intervention | Scores 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)
Intervention | Participants (Number) |
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| Is Not Cool | Is Cool | Is Not Painful | Is Painful |
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1: Retigabine | 19 | 105 | 67 | 57 |
,2: Placebo | 9 | 52 | 34 | 27 |
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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)
Intervention | Participants (Number) |
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| More Painful | The Same | Less Painful |
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1: Retigabine | 30 | 44 | 10 |
,2: Placebo | 29 | 20 | 8 |
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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)
Intervention | Participants (Number) |
---|
| Is Not Cool | Is Cool | Is Not Painful | Is Painful |
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1: Retigabine | 14 | 70 | 63 | 21 |
,2: Placebo | 7 | 50 | 44 | 13 |
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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)
Intervention | Participants (Number) |
---|
| More Sharp | The Same(sharp) | Less sharp | More Painful | The Same(pain) | Less Painful |
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1: Retigabine | 66 | 7 | 51 | 71 | 19 | 34 |
,2: Placebo | 32 | 10 | 19 | 38 | 7 | 16 |
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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)
Intervention | Scores on a scale (Mean) |
---|
| Category Title 1: Week 1; n=88, 57 | Category Title 2: Week 2; n=86, 56 | Category Title 3: Week 3; n=78, 56 | Category Title 4: Week 4; n=75, 55 |
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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).
Intervention | Scores on a scale (Mean) |
---|
| Category Title 1: Overall Sleep Problem Index | Category Title 2: Sleep Disturbance | Category Title 3: Sleep Adequacy | Category Title 4: Snoring | Title 4:Awaken Short of Breath or with a Headache | Category Title 6: Somnolence |
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1: Retigabine | -5.70 | -11.47 | 9.05 | 0.7 | -4.8 | 8.10 |
,2: Placebo | -6.88 | -9.43 | 5.26 | -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)
Intervention | Scores on a scale (Mean) |
---|
| Category Title 1:Week 2; n=88, 57 | Category Title 2: Week 4, n=82, 56 |
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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)
Intervention | Scores on a scale (Mean) |
---|
| Category Title 1: Effectiveness; n=83, 57 | Category Title 2: Side Effects; n=82, 57 | Category Title 3: Convenience; n=84, 57 | Category Title 4: Global Satisfaction; n=84, 57 |
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1: Retigabine | 59.10 | 67.76 | 69.97 | 58.67 |
,2: Placebo | 49.51 | 92.11 | 74.66 | 52.88 |
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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)
Intervention | Participants (Number) |
---|
| Responders with>=50% Pain Reduction | Responders with >=30% Pain Reduction | Responders plus NC with>=50% Pain Reduction | Responders plus NC with>=30% Pain Reduction |
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1: Retigabine | 33 | 52 | 33 | 49 |
,2: Placebo | 22 | 32 | 22 | 31 |
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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).
Intervention | Participants (Number) |
---|
| Category Title 1: Improved | Category Title 2: Same | Category Title 3: Worse |
---|
1: Retigabine | 12 | 63 | 9 |
,2: Placebo | 8 | 42 | 7 |
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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
Intervention | Tablets/Day (Mean) |
---|
| Category Title 1: Week 1; n=88, 57 | Category Title 2: Week 2; n=86, 56 | Category Title 3: Week 3; n=82, 56 | Category Title 4: Week 4; n=76, 55 | Category Title 5: All Maintenance Phase Weeks; n=8 |
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1: Retigabine | 0.92 | 0.89 | 0.74 | 0.83 | 0.87 |
,2: Placebo | 0.84 | 0.79 | 0.85 | 0.77 | 0.83 |
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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)
Intervention | Participants (Number) |
---|
| More Sharp | The Same(sharp) | Less Sharp | More Painful | The Same(pain) | Less Painful |
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1: Retigabine | 29 | 24 | 31 | 31 | 28 | 25 |
,2: Placebo | 24 | 19 | 14 | 24 | 18 | 15 |
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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)
Intervention | Participants (Number) |
---|
| Category Title 1: More Painful | Category Title 2: The Same | Category Title 3: Less Painful |
---|
1: Retigabine | 89 | 19 | 16 |
,2: Placebo | 40 | 14 | 7 |
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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)
Intervention | Participants (Number) |
---|
| Category Title 1: Very Much Improved | Category Title 2: Much Improved | Category Title 3: Minimally Improved | Category Title 4: No Change | Category Title 5: Minimally Worse | Category Title 6: Much Worse | Category Title 7: Very Much Worse |
---|
1: Retigabine | 20 | 27 | 19 | 14 | 3 | 1 | 0 |
,2: Placebo | 8 | 15 | 10 | 21 | 2 | 1 | 0 |
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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
Intervention | Scores on a scale (Mean) |
---|
RTG Flexible Dose Plus C/O | 3.3 |
RTG Flexible Dose Plus Lamotrigine | 2.9 |
RTG Flexible Dose Plus Levetiracetam | 3.1 |
RTG Flexible Dose Plus Valproic Acid | 2.6 |
Total | 3.0 |
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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
Intervention | Scores on a scale (Mean) |
---|
RTG Flexible Dose Plus C/O | 3.4 |
RTG Flexible Dose Plus Lamotrigine | 2.8 |
RTG Flexible Dose Plus Levetiracetam | 3.0 |
RTG Flexible Dose Plus Valproic Acid | 2.5 |
Total | 2.9 |
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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
Intervention | Scores on a scale (Mean) |
---|
RTG Flexible Dose Plus C/O | -2.59 |
RTG Flexible Dose Plus Lamotrigine | 0.66 |
RTG Flexible Dose Plus Levetiracetam | 2.75 |
RTG Flexible Dose Plus Valproic Acid | 3.79 |
Total | 0.94 |
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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
Intervention | Scores on a scale (Mean) |
---|
RTG Flexible Dose Plus C/O | 0.17 |
RTG Flexible Dose Plus Lamotrigine | 1.22 |
RTG Flexible Dose Plus Levetiracetam | -0.58 |
RTG Flexible Dose Plus Valproic Acid | 0.82 |
Total | 0.44 |
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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
Intervention | participants (Number) |
---|
RTG Flexible Dose Plus C/O | 22 |
RTG Flexible Dose Plus Lamotrigine | 16 |
RTG Flexible Dose Plus Levetiracetam | 22 |
RTG Flexible Dose Plus Valproic Acid | 29 |
Total | 89 |
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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
Intervention | Percent change (Mean) |
---|
RTG Flexible Dose Plus C/O | 53.5 |
RTG Flexible Dose Plus Lamotrigine | 4.9 |
RTG Flexible Dose Plus Levetiracetam | 3.7 |
RTG Flexible Dose Plus Valproic Acid | 4.5 |
Total | 17.0 |
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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
Intervention | percent 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
Intervention | Scores on a scale (Mean) |
---|
| Physical Functioning | Role-Physical | Bodily Pain | General Health | Vitality | Social Functioning | Role-Emotional | Mental Health |
---|
RTG Flexible Dose Plus C/O | -0.54 | -1.31 | 0.92 | -0.35 | -2.94 | -1.83 | -1.43 | -2.04 |
,RTG Flexible Dose Plus Lamotrigine | 0.89 | 1.04 | 0.62 | 2.55 | 0.52 | 0.58 | 1.07 | 0.72 |
,RTG Flexible Dose Plus Levetiracetam | -0.70 | 0.31 | 1.28 | 0.68 | 0.47 | 1.84 | 2.19 | 2.48 |
,RTG Flexible Dose Plus Valproic Acid | 0.46 | 1.87 | 2.81 | 2.45 | 1.56 | 2.10 | 4.36 | 3.31 |
,Total | 0.04 | 0.42 | 1.39 | 1.30 | -0.23 | 0.53 | 1.41 | 0.94 |
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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
Intervention | participants (Number) |
---|
| >=25% | >=75% | 100% |
---|
RTG Flexible Dose Plus C/O | 27 | 12 | 0 |
,RTG Flexible Dose Plus Lamotrigine | 33 | 8 | 2 |
,RTG Flexible Dose Plus Levetiracetam | 30 | 8 | 1 |
,RTG Flexible Dose Plus Valproic Acid | 37 | 12 | 2 |
,Total | 127 | 40 | 5 |
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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
Intervention | participants (Number) |
---|
| Any decrease | >0 to <25% decrease | 25 to <50% decrease | 50 to 75% decrease | >75 to 100% decrease | No change or any increase | >25% increase | 0 to 25% increase |
---|
RTG Flexible Dose Plus C/O | 43 | 16 | 5 | 10 | 12 | 12 | 10 | 2 |
,RTG Flexible Dose Plus Lamotrigine | 43 | 10 | 17 | 8 | 8 | 7 | 4 | 3 |
,RTG Flexible Dose Plus Levetiracetam | 36 | 6 | 8 | 14 | 8 | 8 | 5 | 3 |
,RTG Flexible Dose Plus Valproic Acid | 44 | 7 | 8 | 17 | 12 | 7 | 6 | 1 |
,Total | 166 | 39 | 38 | 49 | 40 | 34 | 25 | 9 |
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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
Intervention | participants (Number) |
---|
| Much better | Moderately better | A little better | Unchanged | A little worse | Moderately worse | Much worse |
---|
RTG Flexible Dose Plus C/O | 5 | 13 | 10 | 19 | 2 | 2 | 2 |
,RTG Flexible Dose Plus Lamotrigine | 9 | 11 | 6 | 17 | 3 | 0 | 0 |
,RTG Flexible Dose Plus Levetiracetam | 6 | 9 | 6 | 17 | 1 | 0 | 1 |
,RTG Flexible Dose Plus Valproic Acid | 10 | 14 | 9 | 11 | 1 | 0 | 1 |
,Total | 30 | 47 | 31 | 64 | 7 | 2 | 4 |
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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
Intervention | participants (Number) |
---|
| Much better | Moderately better | A little better | Unchanged | A little worse | Moderately worse | Much worse |
---|
RTG Flexible Dose Plus C/O | 2 | 13 | 11 | 20 | 3 | 3 | 1 |
,RTG Flexible Dose Plus Lamotrigine | 8 | 13 | 4 | 20 | 1 | 0 | 0 |
,RTG Flexible Dose Plus Levetiracetam | 4 | 12 | 6 | 17 | 1 | 0 | 0 |
,RTG Flexible Dose Plus Valproic Acid | 11 | 16 | 9 | 8 | 1 | 0 | 1 |
,Total | 25 | 54 | 30 | 65 | 6 | 3 | 2 |
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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
Intervention | Days (Median) |
---|
| All; n= 2 | Skin; n= 1 | Nails; n= 1 | Mucosa; n= 3 |
---|
Retigabine IR in SFUCP | 582.0 | 192.0 | 253.0 | 701.0 |
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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
Intervention | Participants (Number) |
---|
| Type A; Simple Partial Seizures | Type B; Complex Partial Seizures | Type C; Partials, evolving to Sec. Gen. Seizures | Type D; Generalized, excl. Myoclonic Seizures | Type D2; Myoclonic Seizures | Type E; Unclassified seizures |
---|
Retigabine IR | 5 | 2 | 0 | 0 | 0 | 0 |
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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
Intervention | Weeks (Median) |
---|
Retigabine IR | 103.7 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR | 10 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR | 1 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR | 3 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR | 1 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR | 15 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR in SFUCP | 2 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR | 8 |
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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
Intervention | Participants (Number) |
---|
Retigabine IR | 16 |
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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
Intervention | Percent 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
Intervention | Giga cells per liter (GI/L) (Mean) |
---|
| Basophils; visit 1 (Screening); n= 84 | Basophils; visit 2 (Week 13); n= 85 | Basophils; visit 3 (Week 26); n= 71 | Basophils; visit 4 (Week 39); n= 65 | Basophils; visit 5 (Week 52); n= 60 | Basophils; visit 6 (Week 69); n= 58 | Basophils; visit 7 (Week 86); n= 53 | Basophils; visit 8 (Week 104); n= 36 | Basophils; visit 9 (Week 121); n= 35 | Basophils; visit 10 (Week 138); n= 33 | Basophils; visit 11 (Week 156); n= 29 | Basophils; visit 12 (Week 173); n= 24 | Basophils; visit 13 (Week 190); n= 17 | Basophils; visit 14 (Week 208); n= 10 | Basophils; visit 15 (Week 225); n= 4 | Basophils; visit 16 (Week 242); n= 4 | Basophils; visit 17 (Week 260); n= 4 | Basophils; visit 18 (Week 277); n= 2 | Basophils; withdrawal visit; n= 78 | Basophils; follow up visit; n= 56 | Eosinophils; visit 1 (Screening); n= 84 | Eosinophils; visit 2 (Week 13); n= 85 | Eosinophils; visit 3 (Week 26); n= 71 | Eosinophils; visit 4 (Week 39); n= 65 | Eosinophils; visit 5 (Week 52); n= 60 | Eosinophils; visit 6 (Week 69); n= 58 | Eosinophils; visit 7 (Week 86); n= 53 | Eosinophils; visit 8 (Week 104); n= 36 | Eosinophils; visit 9 (Week 121); n= 35 | Eosinophils; visit 10 (Week 138); n= 33 | Eosinophils; visit 11 (Week 156); n= 29 | Eosinophils; visit 12 (Week 173); n= 24 | Eosinophils; visit 13 (Week 190); n= 17 | Eosinophils; visit 14 (Week 208); n= 10 | Eosinophils; visit 15 (Week 225); n= 4 | Eosinophils; visit 16 (Week 242); n= 4 | Eosinophils; visit 17 (Week 260); n= 4 | Eosinophils; visit 18 (Week 277); n= 2 | Eosinophils; withdrawal visit; n= 78 | Eosinophils; follow up visit; n= 56 | Lymphocytes; visit 1 (Screening); n= 84 | Lymphocytes; visit 2 (Week 13); n= 85 | Lymphocytes; visit 3 (Week 26); n= 71 | Lymphocytes; visit 4 (Week 39); n= 65 | Lymphocytes; visit 5 (Week 52); n= 60 | Lymphocytes; visit 6 (Week 69); n= 58 | Lymphocytes; visit 7 (Week 86); n= 53 | Lymphocytes; visit 8 (Week 104); n= 36 | Lymphocytes; visit 9 (Week 121); n= 35 | Lymphocytes; visit 10 (Week 138); n= 33 | Lymphocytes; visit 11 (Week 156); n= 29 | Lymphocytes; visit 12 (Week 173); n= 24 | Lymphocytes; visit 13 (Week 190); n= 17 | Lymphocytes; visit 14 (Week 208); n= 10 | Lymphocytes; visit 15 (Week 225); n= 4 | Lymphocytes; visit 16 (Week 242); n= 4 | Lymphocytes; visit 17 (Week 260); n= 4 | Lymphocytes; visit 18 (Week 277); n= 2 | Lymphocytes; withdrawal visit; n= 78 | Lymphocytes; follow up visit; n= 56 | Monocytes; visit 1 (Screening); n= 84 | Monocytes; visit 2 (Week 13); n= 85 | Monocytes; visit 3 (Week 26); n= 71 | Monocytes; visit 4 (Week 39); n= 65 | Monocytes; visit 5 (Week 52); n= 60 | Monocytes; visit 6 (Week 69); n= 58 | Monocytes; visit 7 (Week 86); n= 53 | Monocytes; visit 8 (Week 104); n= 36 | Monocytes; visit 9 (Week 121); n= 35 | Monocytes; visit 10 (Week 138); n= 33 | Monocytes; visit 11 (Week 156); n= 29 | Monocytes; visit 12 (Week 173); n= 24 | Monocytes; visit 13 (Week 190); n= 17 | Monocytes; visit 14 (Week 208); n= 10 | Monocytes; visit 15 (Week 225); n= 4 | Monocytes; visit 16 (Week 242); n= 4 | Monocytes; visit 17 (Week 260); n= 4 | Monocytes; visit 18 (Week 277); n= 2 | Monocytes; withdrawal visit; n= 78 | Monocytes; follow up visit; n= 56 | Total neutrophils; visit 1 (Screening); n= 84 | Total neutrophils; visit 2 (Week 13); n= 85 | Total neutrophils; visit 3 (Week 26); n= 71 | Total neutrophils; visit 4 (Week 39); n= 65 | Total neutrophils; visit 5 (Week 52); n= 60 | Total neutrophils; visit 6 (Week 69); n= 58 | Total neutrophils; visit 7 (Week 86); n= 53 | Total neutrophils; visit 8 (Week 104); n= 36 | Total neutrophils; visit 9 (Week 121); n= 35 | Total neutrophils; visit 10 (Week 138); n= 33 | Total neutrophils; visit 11 (Week 156); n= 29 | Total neutrophils; visit 12 (Week 173); n= 24 | Total neutrophils; visit 13 (Week 190); n= 17 | Total neutrophils; visit 14 (Week 208); n= 10 | Total neutrophils; visit 15 (Week 225); n= 4 | Total neutrophils; visit 16 (Week 242); n= 4 | Total neutrophils; visit 17 (Week 260); n= 4 | Total neutrophils; visit 18 (Week 277); n= 2 | Total neutrophils; withdrawal visit; n= 78 | Total neutrophils; follow up visit; n= 56 | Platelet count; visit 1 (Screening); n= 84 | Platelet count; visit 2 (Week 13); n= 88 | Platelet count; visit 3 (Week 26); n= 73 | Platelet count; visit 4 (Week 39); n= 68 | Platelet count; visit 5 (Week 52); n= 63 | Platelet count; visit 6 (Week 69); n= 62 | Platelet count; visit 7 (Week 86); n= 55 | Platelet count; visit 8 (Week 104); n= 41 | Platelet count; visit 9 (Week 121); n= 35 | Platelet count; visit 10 (Week 138); n= 36 | Platelet count; visit 11 (Week 156); n= 31 | Platelet count; visit 12 (Week 173); n= 24 | Platelet count; visit 13 (Week 190); n= 18 | Platelet count; visit 14 (Week 208); n= 10 | Platelet count; visit 15 (Week 225); n= 4 | Platelet count; visit 16 (Week 242); n= 4 | Platelet count; visit 17 (Week 260); n= 4 | Platelet count; visit 18 (Week 277); n= 2 | Platelet count; withdrawal visit; n= 79 | Platelet count; follow up visit; n= 58 | WBC count; visit 1 (Screening); n= 84 | WBC count; visit 2 (Week 13); n= 78 | WBC count; visit 3 (Week 26); n= 66 | WBC count; visit 4 (Week 39); n= 59 | WBC count; visit 5 (Week 52); n= 54 | WBC count; visit 6 (Week 69); n= 54 | WBC count; visit 7 (Week 86); n= 50 | WBC count; visit 8 (Week 104); n= 33 | WBC count; visit 9 (Week 121); n= 32 | WBC count; visit 10 (Week 138); n= 32 | WBC count; visit 11 (Week 156); n= 27 | WBC count; visit 12 (Week 173); n= 22 | WBC count; visit 13 (Week 190); n= 15 | WBC count; visit 14 (Week 208); n= 10 | WBC count; visit 15 (Week 225); n= 4 | WBC count; visit 16 (Week 242); n= 4 | WBC count; visit 17 (Week 260); n= 4 | WBC count; visit 18 (Week 277); n= 2 | WBC count; withdrawal visit; n= 70 | WBC count; follow up visit; n= 50 |
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Retigabine IR | -0.001 | -0.005 | -0.003 | 0.001 | 0.002 | -0.002 | -0.002 | 0.003 | -0.002 | -0.002 | -0.001 | -0.004 | 0.000 | -0.004 | -0.010 | -0.003 | -0.005 | 0.000 | 0.001 | -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 | -0.055 | 0.005 | -0.056 | -0.091 | -0.225 | -0.170 | -0.133 | -0.210 | -0.214 | -0.178 | -0.093 | -0.111 | 0.008 | -0.177 | -0.324 | -0.226 | -0.325 | -0.354 | -0.990 | -0.818 | -0.993 | -1.465 | -0.153 | -0.081 | -0.043 | -0.009 | 0.039 | -0.005 | -0.006 | 0.018 | 0.055 | -0.032 | 0.023 | 0.005 | -0.028 | -0.032 | -0.078 | -0.090 | -0.037 | -0.020 | 0.025 | 0.080 | 0.041 | -0.021 | -0.108 | -0.354 | -0.175 | -0.582 | 0.165 | -0.159 | -0.046 | -0.403 | 0.519 | 0.412 | 0.361 | 0.144 | 0.669 | 0.113 | -0.825 | -1.183 | -0.990 | -2.210 | 0.209 | 0.095 | -1.7 | 3.7 | 5.1 | 2.9 | 4.1 | 6.9 | 1.5 | 4.5 | 8.7 | 6.8 | 1.9 | 9.7 | 7.0 | 18.9 | -31.3 | -9.0 | -10.0 | -19.0 | 8.9 | 8.9 | 0.30 | -0.46 | -0.24 | -0.84 | -0.05 | -0.41 | -0.12 | -0.51 | 0.58 | 0.22 | 0.09 | -0.15 | 0.43 | -0.49 | -2.00 | -2.10 | -2.03 | -3.60 | 0.13 | -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
Intervention | Gram per liter (G/L) (Mean) |
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| Albumin; visit 1 (Screening); n= 83 | Albumin; visit 2 (Week 13); n= 87 | Albumin; visit 3 (Week 26); n= 75 | Albumin; visit 4 (Week 39); n= 70 | Albumin; visit 5 (Week 52); n= 65 | Albumin; visit 6 (Week 69); n= 62 | Albumin; visit 7 (Week 86); n= 54 | Albumin; visit 8 (Week 104); n= 42 | Albumin; visit 9 (Week 121); n= 39 | Albumin; visit 10 (Week 138); n= 36 | Albumin; visit 11 (Week 156); n= 30 | Albumin; visit 12 (Week 173); n= 23 | Albumin; visit 13 (Week 190); n= 19 | Albumin; visit14 (Week 208); n= 10 | Albumin; visit 15 (Week 225); n= 5 | Albumin; visit 16 (Week242); n= 4 | Albumin; visit 17 (Week 260); n= 4 | Albumin; visit 18 (Week 277); n= 2 | Albumin; withdrawal visit; n= 79 | Albumin; follow up visit; n= 60 | Total protein; visit 1 (Screening); n= 83 | Total protein; visit 2 (Week 13); n= 87 | Total protein; visit 3 (Week 26); n= 75 | Total protein; visit 4 (Week 39); n= 70 | Total protein; visit 5 (Week 52); n= 65 | Total protein; visit 6 (Week 69); n= 62 | Total protein; visit 7 (Week 86); n= 54 | Total protein; visit 8 (Week 104); n= 42 | Total protein; visit 9 (Week 121); n= 39 | Total protein; visit 10 (Week 138); n= 36 | Total protein; visit 11 (Week 156); n= 30 | Total protein; visit 12 (Week 173); n= 23 | Total protein; visit 13 (Week 190); n= 19 | Total protein; visit 14 (Week 208); n= 10 | Total protein; visit 15 (Week 225); n= 5 | Total protein; visit 16 (Week 242); n= 4 | Total protein; visit 17 (Week 260); n= 4 | Total protein; visit 18 (Week 277); n= 2 | Total protein; withdrawal visit; n= 79 | Total protein; follow up visit; n= 60 |
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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
Intervention | International unit per liter (IU/L) (Mean) |
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| Alk. phosphatase; visit 1 (Screening); n= 82 | Alk. phosphatase; visit 2 (Week 13); n= 86 | Alk. phosphatase; visit 3 (Week 26); n= 75 | Alk. phosphatase; visit 4 (week 39); n= 70 | Alk. phosphatase; visit 5 (Week 52); n= 65 | Alk. phosphatase; visit 6 (Week 69); n= 62 | Alk. phosphatase; visit 7 (Week 86); n= 54 | Alk. phosphatase; visit 8 (Week 104); n= 42 | Alk. phosphatase; visit 9 (Week 121); n= 39 | Alk. phosphatase; visit 10 (Week 138); n= 36 | Alk. phosphatase; visit 11 (Week 156); n= 30 | Alk. phosphatase; visit 12 (Week 173); n= 23 | Alk. phosphatase; visit 13 (Week 190); n= 19 | Alk. phosphatase; visit 14 (Week 208); n= 10 | Alk. phosphatase; visit 15 (Week 225); n= 5 | Alk. phosphatase; visit 16 (Week 242); n= 4 | Alk. phosphatase; visit 17 (Week 260); n= 4 | Alk. phosphatase; visit 18 (Week 277); n= 2 | Alk. phosphatase; withdrawal visit; n= 78 | Alk. phosphatase; follow up visit; n= 60 | ALT; visit 1 (Screening); n= 83 | ALT; visit 2 (Week 13); n= 87 | ALT; visit 3 (Week 26); n= 76 | ALT; visit 4 (Week 39); n= 70 | ALT; visit 5 (Week 52); n= 65 | ALT; visit 6 (Week 69); n= 62 | ALT; visit 7 (Week 86); n= 54 | ALT; visit 8 (Week 104); n= 42 | ALT; visit 9 (Week 121); n= 39 | ALT; visit 10 (Week 138); n= 36 | ALT; visit 11 (Week 156); n= 29 | ALT; visit 12 (Week 173); n= 23 | ALT; visit 13 (Week 190); n= 19 | ALT; visit 14 (Week 208); n= 10 | ALT; visit 15 (Week 225); n= 5 | ALT; visit 16 (Week 242); n= 4 | ALT; visit 17 (Week 260); n= 4 | ALT; visit 18 (Week 277); n= 2 | ALT; withdrawal visit; n= 79 | ALT; follow up visit; n= 60 | AST; visit 1 (Screening); n= 82 | AST; visit 2 (Week 13); n= 86 | AST; visit 3 (Week 26); n= 75 | AST; visit 4 (Week 39); n= 70 | AST; visit 5 (Week 52); n= 65 | AST; visit 6 (Week 69); n= 62 | AST; visit 7 (Week 86); n= 54 | AST; visit 8 (Week 104); n= 42 | AST; visit 9 (Week 121); n= 39 | AST; visit 10 (Week 138); n= 36 | AST; visit 11 (Week 156); n= 30 | AST; visit 12 (Week 173); n= 23 | AST; visit 13 (Week 190); n= 19 | AST; visit 14 (Week 208); n= 10 | AST; visit 15 (Week 225); n= 5 | AST; visit 16 (Week 242); n= 4 | AST; visit 17 (Week 260); n= 4 | AST; visit 18 (Week 277); n= 2 | AST; withdrawal visit; n= 78 | AST; follow up visit; n= 60 | Creatine kinase; Visit 1 (Screening); n= 82 | Creatine kinase; Visit 2 (Week 13); n= 86 | Creatine kinase; Visit 3 (Week 26); n= 74 | Creatine kinase; Visit 4 (Week 39); n= 70 | Creatine kinase; Visit 5 (Week 52); n= 65 | Creatine kinase; Visit 6 (Week 69); n= 62 | Creatine kinase; Visit 7 (Week 86); n= 54 | Creatine kinase; Visit 8 (Week 104); n= 42 | Creatine kinase; Visit 9 (Week 121); n= 39 | Creatine kinase; Visit 10 (Week 138); n= 36 | Creatine kinase; Visit 11 (Week 156); n= 30 | Creatine kinase; Visit 12 (Week 173); n= 23 | Creatine kinase; Visit 13 (Week 190); n= 19 | Creatine kinase; Visit 14 (Week 208); n= 10 | Creatine kinase; Visit 15 (Week 225); n= 5 | Creatine kinase; Visit 16 (Week 242); n= 4 | Creatine kinase; Visit 17 (Week 260); n= 4 | Creatine kinase; Visit 18 (Week 277); n= 2 | Creatine kinase; withdrawal visit; n= 78 | Creatine kinase; follow up visit; n= 60 | LD; visit 1(Screening); n= 82 | LD; visit 2 (Week 13); n= 86 | LD; visit 3 (Week 26); n= 74 | LD; visit 4 (Week 39); n= 69 | LD; visit 5 (Week 52); n= 64 | LD; visit 6 (Week 69); n= 61 | LD; visit 7 (Week 86); n= 54 | LD; visit 8 (Week 104); n= 42 | LD; visit 9 (Week 121); n= 39 | LD; visit 10 (Week 138); n= 36 | LD; visit 11 (Week 156); n= 30 | LD; visit 12 (Week 173); n= 23 | LD; visit 13 (Week 190); n= 19 | LD; visit 14 (Week 208); n= 10 | LD; visit 15 (Week 225); n= 5 | LD; visit 16 (Week 242); n= 4 | LD; visit 17 (Week 260); n= 4 | LD; visit 18 (Week 277); n= 2 | LD; withdrawal visit; n= 78 | LD; follow up visit; n= 60 |
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Retigabine IR | -2.7 | 1.1 | 3.5 | 3.9 | 1.0 | 4.1 | 4.0 | -0.3 | 2.4 | 2.2 | -1.4 | 5.5 | 6.3 | 6.1 | 5.8 | 9.5 | 7.3 | -4.5 | 2.5 | -0.3 | 1.3 | 3.4 | 1.0 | -0.5 | -0.4 | -0.0 | -1.9 | -1.5 | 0.4 | 3.4 | -1.1 | -1.3 | 0.0 | 0.7 | -2.0 | -0.5 | 0.0 | 3.5 | 0.7 | 0.1 | 1.7 | 5.1 | 2.9 | 1.3 | 2.5 | 1.5 | 1.7 | 1.5 | 2.6 | 6.4 | 1.4 | 2.7 | 3.3 | 3.5 | 4.2 | 4.3 | 5.5 | 10.0 | 1.8 | 1.2 | 16.4 | 11.3 | 11.7 | 49.4 | 31.3 | 11.1 | 23.6 | 33.2 | 22.5 | 24.8 | 31.9 | 29.1 | 50.2 | -7.9 | 42.6 | 90.3 | 78.8 | -27.5 | 28.7 | 33.9 | 3.7 | 4.3 | 0.0 | 0.4 | 2.1 | -0.1 | 9.2 | 4.7 | 18.8 | 33.0 | 13.7 | 4.1 | 30.0 | 25.8 | 34.6 | 25.8 | 20.8 | 52.0 | 7.8 | 5.6 |
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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
Intervention | Ratio of BUN to creatinine (Mean) |
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| Visit 1 (Screening); n= 82 | Visit 2 (Week 13); n= 86 | Visit 3 (Week 26); n= 74 | Visit 4 (Week 39); n= 70 | Visit 5 (Week 52); n= 65 | Visit 6 (Week 69); n= 62 | Visit 7 (Week 86); n= 54 | Visit 8 (Week 104); n= 42 | Visit 9 (Week 121); n= 39 | Visit 10 (Week 138); n= 36 | Visit 11 (Week 156); n= 30 | Visit 12 (Week 173); n= 23 | Visit 13 (Week 190); n= 19 | Visit 14 (Week 208); n= 10 | Visit 15 (Week 225); n= 5 | Visit 16 (Week 242); n= 4 | Visit 17 (Week 260); n= 4 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 78 | Follow up visit; n= 60 |
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Retigabine IR | 0.3 | 3.8 | 2.7 | 1.0 | 1.9 | -0.0 | 2.5 | -2.5 | 0.6 | 0.2 | -6.2 | -5.7 | 1.1 | -0.8 | -8.8 | 4.0 | 2.0 | 3.0 | 4.2 | 0.4 |
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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
Intervention | Millimoles per liter (mmol/L) (Mean) |
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| Calcium; visit 1 (Screening); n= 82 | Calcium; visit 2 (Week 13); n= 86 | Calcium; visit 3 (Week 26); n= 74 | Calcium; visit 4 (Week 39); n= 69 | Calcium; visit 5 (Week 52); n= 64 | Calcium; visit 6 (Week 69); n= 61 | Calcium; visit 7 (Week 86); n= 54 | Calcium; visit 8 (Week 104); n= 42 | Calcium; visit 9 (Week 121); n= 39 | Calcium; visit 10 (Week 138); n= 36 | Calcium; visit 11 (Week 156); n= 30 | Calcium; visit 12 (Week 173); n= 23 | Calcium; visit 13 (Week 190); n= 19 | Calcium; visit 14 (Week 208); n= 10 | Calcium; visit 15 (Week 225); n= 5 | Calcium; visit 16 (Week 242); n= 4 | Calcium; visit 17 (Week 260); n= 4 | Calcium; visit 18 (Week 277); n= 2 | Calcium; withdrawal visit; n= 78 | Calcium; follow up visit; n= 60 | Chloride; visit 1 (Screening); n= 83 | Chloride; visit 2 (Week 13); n= 87 | Chloride; visit 3 (Week 26); n=75 | Chloride; visit 4 (Week 39); n= 70 | Chloride; visit 5 (Week 52); n= 65 | Chloride; visit 6 (Week 69); n= 62 | Chloride; visit 7 (Week 86); n= 54 | Chloride; visit 8 (Week 104); n= 42 | Chloride; visit 9 (Week 121); n= 39 | Chloride; visit 10 (Week 138); n= 36 | Chloride; visit 11 (Week 156); n= 30 | Chloride; visit 12 (Week 173); n= 23 | Chloride; visit 13 (Week 190); n= 19 | Chloride; visit 14 (Week 208); n= 10 | Chloride; visit 15 (Week 225); n= 5 | Chloride; visit 16 (Week 242); n= 4 | Chloride; visit 17 (Week 260); n= 4 | Chloride; visit 18 (Week 277); n= 2 | Chloride; withdrawal visit; n= 79 | Chloride; follow up visit; n= 60 | CO2; visit 1 (Screening); n= 82 | CO2; visit 2 (Week 13); n= 86 | CO2; visit 3 (Week 26); n= 74 | CO2; visit 4 (Week 39); n= 69 | CO2; visit 5 (Week 52); n= 64 | CO2; visit 6 (Week 69); n= 61 | CO2; visit 7 (Week 86); n= 54 | CO2; visit 8 (Week 104); n= 42 | CO2; visit 9 (Week 121); n= 39 | CO2; visit 10 (Week 138); n= 36 | CO2; visit 11 (Week 156); n= 30 | CO2; visit 12 (Week 173); n= 23 | CO2; visit 13 (Week 190); n= 19 | CO2; visit 14 (Week 208); n= 10 | CO2; visit 15 (Week 225); n= 5 | CO2; visit 16 (Week 242); n= 4 | CO2; visit 17 (Week 260); n= 4 | CO2; visit 18 (Week 277); n= 2 | CO2; withdrawal visit; n= 78 | CO2; follow up visit; n= 60 | Glucose; visit 1 (Screening); n= 83 | Glucose; visit 2 (Week 13); n= 87 | Glucose; visit 3 (Week 26); n= 75 | Glucose; visit 4 (Week 39); n= 70 | Glucose; visit 5 (Week 52); n= 65 | Glucose; visit 6 (Week 69); n= 62 | Glucose; visit 7 (Week 86); n= 54 | Glucose; visit 8 (Week 104); n= 42 | Glucose; visit 9 (Week 121); n= 39 | Glucose; visit 10 (Week 138); n= 36 | Glucose; visit 11 (Week 156); n= 30 | Glucose; visit 12 (Week 173); n= 23 | Glucose; visit 13 (Week 190); n= 19 | Glucose; visit 14 (Week 208); n= 10 | Glucose; visit 15 (Week 225); n= 5 | Glucose; visit 16 (Week 242); n= 4 | Glucose; visit 17 (Week 260); n= 4 | Glucose; visit 18 (Week 277); n= 2 | Glucose; withdrawal visit; n= 79 | Glucose; follow up visit; n= 60 | Potassium; visit 1 (Screening); n= 82 | Potassium; visit 2 (Week 13); n= 86 | Potassium; visit 3 (Week 26); n= 74 | Potassium; visit 4 (Week 39); n= 69 | Potassium; visit 5 (Week 52); n= 64 | Potassium; visit 6 (Week 69); n= 61 | Potassium; visit 7 (Week 86); n= 54 | Potassium; visit 8 (Week 104); n= 42 | Potassium; visit 9 (Week 121); n= 39 | Potassium; visit 10 (Week 138); n= 36 | Potassium; visit 11 (Week 156); n= 30 | Potassium; visit 12 (Week 173); n= 23 | Potassium; visit 13 (Week 190); n= 19 | Potassium; visit 14 (Week 208); n= 10 | Potassium; visit 15 (Week 225); n= 5 | Potassium; visit 16 (Week 242); n= 4 | Potassium; visit 17 (Week 260); n= 4 | Potassium; visit 18 (Week 277); n= 2 | Potassium; withdrawal visit; n= 78 | Potassium; follow up visit; n= 60 | Magnesium; visit 1 (Screening); n= 83 | Magnesium; visit 2 (Week 13); n= 87 | Magnesium; visit 3 (Week 26); n= 75 | Magnesium; visit 4 (Week 39); n= 70 | Magnesium; visit 5 (Week 52); n= 65 | Magnesium; visit 6 (Week 69); n= 62 | Magnesium; visit 7 (Week 86); n= 54 | Magnesium; visit 8 (Week 104); n= 42 | Magnesium; visit 9 (Week 121); n= 39 | Magnesium; visit 10 (Week 138); n= 36 | Magnesium; visit 11 (Week 156); n= 30 | Magnesium; visit 12 (Week 173); n= 23 | Magnesium; visit 13 (Week 190); n= 19 | Magnesium; visit 14 (Week 208); n= 10 | Magnesium; visit 15 (Week 225); n= 5 | Magnesium; visit 16 (Week 242); n= 4 | Magnesium; visit 17 (Week 260); n= 4 | Magnesium; visit 18 (Week 277); n= 2 | Magnesium; withdrawal visit; n= 79 | Magnesium; follow up visit; n= 60 | Sodium; visit 1 (Screening); n= 83 | Sodium; visit 2 (Week 13); n= 80 | Sodium; visit 3 (Week 26); n= 69 | Sodium; visit 4 (Week 39); n= 64 | Sodium; visit 5 (Week 52); n= 59 | Sodium; visit 6 (Week 69); n= 58 | Sodium; visit 7 (Week 86); n= 51 | Sodium; visit 8 (Week 104); n= 39 | Sodium; visit 9 (Week 121); n= 36 | Sodium; visit 10 (Week 138); n= 35 | Sodium; visit 11 (Week 156); n= 28 | Sodium; visit 12 (Week 173); n= 21 | Sodium; visit 13 (Week 190); n= 17 | Sodium; visit 14 (Week 208); n= 10 | Sodium; visit 15 (Week 225); n= 5 | Sodium; visit 16 (Week 242); n= 4 | Sodium; visit 17 (Week 260); n= 4 | Sodium; visit 18 (Week 277); n= 2 | Sodium; withdrawal visit; n= 71 | Sodium; follow up visit; n= 53 | BUN; visit 1 (Screening); n= 83 | BUN; visit 2 (Week 13); n= 80 | BUN; visit 3 (Week 26); n= 69 | BUN; visit 4 (Week 39); n= 64 | BUN; visit 5 (Week 52); n= 59 | BUN; visit 6 (Week 69); n= 58 | BUN; visit 7 (Week 86); n= 51 | BUN; visit 8 (Week 104); n= 39 | BUN; visit 9 (Week 121); n= 36 | BUN; visit 10 (Week 138); n= 35 | BUN; visit 11 (Week 156); n= 28 | BUN; visit 12 (Week 173); n= 21 | BUN; visit 13 (Week 190); n= 17 | BUN; visit 14 (Week 208); n= 10 | BUN; visit 15 (Week 225); n= 5 | BUN; visit 16 (Week 242); n= 4 | BUN; visit 17 (Week 260); n= 4 | BUN; visit 18 (Week 277); n= 2 | BUN; withdrawal visit; n= 71 | BUN; follow up visit; n= 53 |
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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 | -0.050 | 0.5 | 0.4 | 0.1 | 1.5 | 1.2 | 0.4 | 1.5 | 1.3 | 1.4 | 1.2 | 2.0 | 1.6 | 2.4 | 1.2 | 1.2 | 2.0 | 3.5 | -0.5 | 0.6 | -0.0 | -0.2 | 0.3 | 0.5 | -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 | -0.8 | 0.20 | 0.16 | 0.17 | 0.40 | 0.23 | 0.25 | 0.21 | 0.21 | 0.31 | 0.30 | 0.10 | -0.03 | 0.21 | 0.15 | 0.38 | 1.95 | -0.10 | -0.30 | 0.14 | 0.39 | -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 | -0.16 | 0.14 | 0.30 | 0.25 | 0.10 | -0.04 | -0.20 | -0.017 | -0.012 | -0.007 | -0.004 | -0.008 | -0.012 | -0.018 | 0.007 | -0.011 | -0.007 | 0.005 | -0.003 | -0.000 | -0.013 | 0.000 | -0.008 | 0.053 | 0.070 | -0.003 | -0.007 | 0.2 | 0.2 | -0.2 | 0.7 | 0.5 | -0.2 | 0.6 | 0.9 | 0.7 | 0.3 | 0.9 | 0.7 | 0.6 | -1.2 | -0.4 | -0.8 | 0.8 | -1.0 | 0.2 | -0.7 | 0.32 | 0.44 | 0.31 | 0.22 | 0.37 | 0.13 | 0.22 | 0.22 | 0.35 | 0.18 | -0.06 | -0.40 | 0.23 | -0.11 | -0.40 | 0.80 | 1.10 | 0.50 | 0.49 | 0.14 |
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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
Intervention | Micromole per liter (µmol/L) (Mean) |
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| Direct bilirubin; visit 1 (Screening); n= 83 | Direct bilirubin; visit 2 (Week 13); n= 87 | Direct bilirubin; visit 3 (Week 26); n= 75 | Direct bilirubin; visit 4 (Week 39); n= 69 | Direct bilirubin; visit 5 (Week 52); n= 65 | Direct bilirubin; visit 6 (Week 69); n= 62 | Direct bilirubin; visit 7 (Week 86); n= 54 | Direct bilirubin; visit 8 (Week 104); n= 42 | Direct bilirubin; visit 9 (Week 121); n= 39 | Direct bilirubin; visit 10 (Week 138); n= 36 | Direct bilirubin; visit 11 (Week 156); n= 30 | Direct bilirubin; visit 12 (Week 173); n= 23 | Direct bilirubin; visit 13 (Week 190); n= 19 | Direct bilirubin; visit 14 (Week 208); n= 10 | Direct bilirubin; visit 15 (Week 225); n= 5 | Direct bilirubin; visit 16 (Week 242); n= 4 | Direct bilirubin; visit 17 (Week 260); n= 4 | Direct bilirubin; visit 18 (Week 277); n= 2 | Direct bilirubin; withdrawal visit; n= 79 | Direct bilirubin; follow up visit; n= 60 | Total bilirubin; visit 1 (Screening); n= 83 | Total bilirubin; visit 2 (Week 13); n= 87 | Total bilirubin; visit 3 (Week 26); n= 76 | Total bilirubin; visit 4 (Week 39); n= 70 | Total bilirubin; visit 5 (Week 52); n= 65 | Total bilirubin; visit 6 (Week 69); n= 62 | Total bilirubin; visit 7 (Week 86); n= 54 | Total bilirubin; visit 8 (Week 104); n= 42 | Total bilirubin; visit 9 (Week 121); n= 39 | Total bilirubin; visit 10 (Week 138); n= 36 | Total bilirubin; visit 11 (Week 156); n= 30 | Total bilirubin; visit 12 (Week 173); n= 23 | Total bilirubin; visit 13 (Week 190); n= 19 | Total bilirubin; visit 14 (Week 208); n= 10 | Total bilirubin; visit 15 (Week 225); n= 5 | Total bilirubin; visit 16 (Week 242); n= 4 | Total bilirubin; visit 17 (Week 260); n= 4 | Total bilirubin; visit 18 (Week 277); n= 2 | Total bilirubin; withdrawal visit; n= 79 | Total bilirubin; follow up visit; n= 60 | Creatinine; visit 1 (Screening); n= 82 | Creatinine; visit 2 (Week 13); n= 86 | Creatinine; visit 3 (Week 26); n= 74 | Creatinine; visit 4 (Week 39); n= 70 | Creatinine; visit 5 (Week 52); n= 65 | Creatinine; visit 6 (Week 69); n= 62 | Creatinine; visit 7 (Week 86); n= 54 | Creatinine; visit 8 (Week 104); n= 42 | Creatinine; visit 9 (Week 121); n= 39 | Creatinine; visit 10 (Week 138); n= 36 | Creatinine; visit 11 (Week 156); n= 30 | Creatinine; visit 12 (Week 173); n= 23 | Creatinine; visit 13 (Week 190); n= 19 | Creatinine; visit 14 (Week 208); n= 10 | Creatinine; visit 15 (Week 225); n= 5 | Creatinine; visit 16 (Week 242); n= 4 | Creatinine; visit 17 (Week 260); n= 4 | Creatinine; visit 18 (Week 277); n= 2 | Creatinine; withdrawal visit; n= 78 | Creatinine; follow up visit; n= 60 |
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Retigabine IR | 0.1 | -0.1 | -0.2 | -0.1 | 0.0 | -0.0 | -0.2 | -0.0 | -0.2 | -0.1 | 0.0 | -0.1 | 0.1 | 0.0 | -0.2 | -0.5 | -0.5 | 0.5 | 0.0 | -0.2 | 2.5 | 1.8 | 1.8 | 2.1 | 2.6 | 1.8 | 1.4 | 1.8 | 1.1 | 1.6 | 0.5 | 0.6 | 0.2 | 0.3 | 0.8 | 1.3 | -0.3 | 1.5 | 1.2 | -0.8 | 3.68 | 0.42 | 0.65 | 1.82 | 1.40 | 1.25 | 0.55 | 4.78 | 3.67 | 2.10 | 5.33 | -0.93 | 1.67 | -1.74 | 2.08 | 5.80 | 9.23 | 3.45 | 0.88 | 0.16 |
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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
Intervention | Beats per minute (bpm) (Mean) |
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| Visit 1 (Screening); n= 89 | Visit 2 (Week 13); n= 90 | Visit 3 (Week 26); n= 80 | Visit 4 (Week 39); n= 71 | Visit 5 (Week 52); n= 67 | Visit 6 (Week 69); n= 63 | Visit 7 (Week 86); n= 56 | Visit 8 (Week 104); n= 42 | Visit 9 (Week 121); n= 38 | Visit 10 (Week 138); n= 37 | Visit 11 (Week 156); n= 30 | Visit 12 (Week 173); n= 24 | Visit 13 (Week 190); n= 19 | Visit 14 (Week 208); n= 10 | Visit 15 (Week 225); n= 5 | Visit 16 (Week 242); n= 4 | Visit 17 (Week 260); n= 4 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 83 | Follow up visit; n= 59 |
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Retigabine IR | -2.2 | -0.6 | -1.5 | -1.7 | -0.6 | -0.2 | 1.6 | -1.8 | 1.7 | 1.6 | 1.1 | -0.8 | 2.7 | 5.6 | -0.2 | -4.3 | -7.3 | 2.5 | -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
Intervention | Proportion of red blood cells in blood (Mean) |
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| Visit 1 (Screening); n= 85 | Visit 2 (Week 13); n= 89 | Visit 3 (Week 26); n= 74 | Visit 4 (Week 39); n= 69 | Visit 5 (Week 52); n= 64 | Visit 6 (Week 69); n= 62 | Visit 7 (Week 86); n= 55 | Visit 8 (Week 104); n= 41 | Visit 9 (Week 121); n= 36 | Visit 10 (Week 138); n= 36 | Visit 11 (Week 156); n= 31 | Visit 12 (Week 173); n= 24 | Visit 13 (Week 190); n= 18 | Visit 14 (Week 208); n= 10 | Visit 15 (Week 225); n= 4 | Visit 16 (Week 242); n= 4 | Visit 17 (Week 260); n= 4 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 79 | Follow up visit; n= 59 |
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Retigabine IR | -0.0080 | -0.0087 | -0.0066 | -0.0030 | -0.0020 | -0.0020 | 0.0063 | 0.0103 | 0.0053 | 0.0129 | 0.0025 | 0.0070 | 0.0061 | 0.0015 | 0.0050 | -0.0097 | -0.0040 | -0.0270 | 0.0034 | 0.0039 |
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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
Intervention | G/L (Mean) |
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| Hemoglobin; visit 1 (Screening); n= 85 | Hemoglobin; visit 2 (Week 13); n= 89 | Hemoglobin; visit 3 (Week 26); n= 74 | Hemoglobin; visit 4 (Week 39); n= 69 | Hemoglobin; visit 5 (Week 52); n= 64 | Hemoglobin; visit 6 (Week 69); n= 62 | Hemoglobin; visit 7 (Week 86); n= 55 | Hemoglobin; visit 8 (Week 104); n= 41 | Hemoglobin; visit 9 (Week 121); n= 36 | Hemoglobin; visit 10 (Week 138); n= 36 | Hemoglobin; visit 11 (Week 156); n= 31 | Hemoglobin; visit 12 (Week 173); n= 24 | Hemoglobin; visit 13 (Week 190); n= 18 | Hemoglobin; visit 14 (Week 208); n= 10 | Hemoglobin; visit 15 (Week 225); n= 4 | Hemoglobin; visit 16 (Week 242); n= 4 | Hemoglobin; visit 17 (Week 260); n= 4 | Hemoglobin; visit 18 (Week 277); n= 2 | Hemoglobin; withdrawal visit; n= 79 | Hemoglobin; follow up visit; n= 59 | MCHC; visit 1 (Screening); n= 85 | MCHC; visit 2 (Week 13); n= 89 | MCHC; visit 3 (Week 26); n= 74 | MCHC; visit 4 (Week 39); n= 69 | MCHC; visit 5 (Week 52); n= 64 | MCHC; visit 6 (Week 69); n= 62 | MCHC; visit 7 (Week 86); n= 55 | MCHC; visit 8 (Week 104); n= 41 | MCHC; visit 9 (Week 121); n= 36 | MCHC; visit 10 (Week 138); n= 36 | MCHC; visit 11 (Week 156); n= 31 | MCHC; visit 12 (Week 173); n= 24 | MCHC; visit 13 (Week 190); n= 18 | MCHC; visit 14 (Week 208); n= 10 | MCHC; visit 15 (Week 225); n= 4 | MCHC; visit 16 (Week 242); n= 4 | MCHC; visit 17 (Week 260); n= 4 | MCHC; visit 18 (Week 277); n= 2 | MCHC; withdrawal visit; n= 79 | MCHC; follow up visit; n= 59 |
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Retigabine IR | -3.5 | -2.4 | -2.7 | -2.9 | -2.9 | -2.5 | -0.4 | -0.7 | -1.4 | 0.1 | -3.4 | -2.2 | -4.3 | -8.0 | -6.0 | -9.5 | -8.0 | -10.5 | -1.7 | -2.3 | -2.1 | 1.4 | -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
Intervention | Picograms (Pg) (Mean) |
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| Visit 1 (Screening); n= 85 | Visit 2 (Week 13); n= 89 | Visit 3 (Week 26); n= 74 | Visit 4 (Week 39); n= 69 | Visit 5 (Week 52); n= 64 | Visit 6 (Week 69); n= 62 | Visit 7 (Week 86); n= 55 | Visit 8 (Week 104); n= 41 | Visit 9 (Week 121); n= 36 | Visit 10 (Week 138); n= 36 | Visit 11 (Week 156); n= 31 | Visit 12 (Week 173); n= 24 | Visit 13 (Week 190); n= 18 | Visit 14 (Week 208); n= 10 | Visit 15 (Week 225); n= 4 | Visit 16 (Week 242); n= 4 | Visit 17 (Week 260); n= 4 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 79 | Follow up visit; n= 59 |
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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
Intervention | Femtoliter (fL) (Mean) |
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| MCV (Screening); Visit 1; n= 85 | MCV; Visit 2 (Week 13); n= 89 | MCV; Visit 3 (Week 26); n= 74 | MCV; Visit 4 (Week 39); n= 69 | MCV; Visit 5 (Week 52); n= 64 | MCV; Visit 6 (Week 69); n= 62 | MCV; Visit 7 (Week 86); n= 55 | MCV; Visit 8 (Week 104); n= 41 | MCV; Visit 9 (Week 121); n= 36 | MCV; Visit 10 (Week 138); n= 36 | MCV; Visit 11 (Week 156); n= 31 | MCV; Visit 12 (Week 173); n= 24 | MCV; Visit 13 (Week 190); n= 18 | MCV; Visit 14 (Week 208); n= 10 | MCV; Visit 15 (Week 225); n= 4 | MCV; Visit 16 (Week 242); n= 4 | MCV; Visit 17 (Week 260); n= 4 | MCV; Visit 18 (Week 277); n= 2 | MCV; Withdrawal visit; n= 79 | MCV; Follow up visit; n= 59 | MPV; visit 1 (Screening); n= 84 | MPV: visit 2 (Week 13); n= 86 | MPV: visit 3 (Week 26); n= 71 | MPV; visit 4 (Week 39); n= 67 | MPV; visit 5 (Week 52); n= 61 | MPV; visit 6 (Week 69); n= 58 | MPV; visit 7 (Week 86); n= 53 | MPV; visit 8 (Week 104); n= 38 | MPV: visit 9 (Week 121); n= 35 | MPV; visit 10 (Week 138); n= 34 | MPV; visit 11 (Week 156); n= 29 | MPV: visit 12 (Week 173); n= 24 | MPV; visit 13 (Week 190); n= 17 | MPV; visit 14 (Week 208); n= 10 | MPV; visit 15 (Week 225); n= 4 | MPV; visit 16 (Week 242); n= 4 | MPV; visit 17 (Week 260); n= 4 | MPV; visit 18 (Week 277); n= 2 | MPV; withdrawal visit; n= 78 | MPV; follow up visit; n= 57 |
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Retigabine IR | 0.0 | -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 | -0.03 | 0.12 | 0.01 | 0.13 | 0.06 | 0.14 | 0.04 | -0.09 | -0.37 | -0.33 | -0.75 | -0.17 | -1.15 | 0.19 | 0.12 |
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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
Intervention | Percent of blood components (Mean) |
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| Percent basophils; visit 1 (Screening); n= 84 | Percent basophils; visit 2 (Week 13); n= 85 | Percent basophils; visit 3 (Week 26); n= 71 | Percent basophils; visit 4 (Week 39); n= 65 | Percent basophils; visit 5 (Week 52); n= 60 | Percent basophils; visit 6 (Week 69); n= 58 | Percent basophils; visit 7 (Week 86); n= 53 | Percent basophils; visit 8 (Week 104); n= 36 | Percent basophils; visit 9 (Week 121); n= 35 | Percent basophils; visit 10 (Week 138); n= 33 | Percent basophils; visit 11 (Week 156); n= 29 | Percent basophils; visit 12 (Week 173); n= 24 | Percent basophils; visit 13 (Week 190); n= 17 | Percent basophils; visit 14 (Week 208); n= 10 | Percent basophils; visit 15 (Week 225); n= 4 | Percent basophils; visit 16 (Week 242); n= 4 | Percent basophils; visit 17 (Week 260); n= 4 | Percent basophils; visit 18 (Week 277); n= 2 | Percent basophils; withdrawal visit; n= 78 | Percent basophils; follow up visit; n= 56 | Percent eosinophils; visit 1 (Screening); n= 84 | Percent eosinophils; visit 2 (Week 13); n= 85 | Percent eosinophils; visit 3 (Week 26); n= 71 | Percent eosinophils; visit 4 (Week 39); n= 65 | Percent eosinophils; visit 5 (Week 52); n= 60 | Percent eosinophils; visit 6 (Week 69); n= 58 | Percent eosinophils; visit 7 (Week 86); n= 53 | Percent eosinophils; visit 8 (Week 104); n= 36 | Percent eosinophils; visit 9 (Week 121); n= 35 | Percent eosinophils; visit 10 (Week 138); n= 33 | Percent eosinophils; visit 11 (Week 156); n= 29 | Percent eosinophils; visit 12 (Week 173); n= 24 | Percent eosinophils; visit 13 (Week 190); n= 17 | Percent eosinophils; visit 14 (Week 208); n= 10 | Percent eosinophils; visit 15 (Week 225); n= 4 | Percent eosinophils; visit 16 (Week 242); n= 4 | Percent eosinophils; visit 17 (Week 260); n= 4 | Percent eosinophils; visit 18 (Week 277); n= 2 | Percent eosinophils; withdrawal visit; n= 78 | Percent eosinophils; follow up visit; n= 56 | Percent lymphocytes; visit 1 (Screening); n= 84 | Percent lymphocytes; visit 2 (Week 13); n= 85 | Percent lymphocytes; visit 3 (Week 26); n= 71 | Percent lymphocytes; visit 4 (Week 39); n= 65 | Percent lymphocytes; visit 5 (Week 52); n= 60 | Percent lymphocytes; visit 6 (Week 69); n= 58 | Percent lymphocytes; visit 7 (Week 86); n= 53 | Percent lymphocytes; visit 8 (Week 104); n= 36 | Percent lymphocytes; visit 9 (Week 121); n= 35 | Percent lymphocytes; visit 10 (Week 138); n= 33 | Percent lymphocytes; visit 11 (Week 156); n= 29 | Percent lymphocytes; visit 12 (Week 173); n= 24 | Percent lymphocytes; visit 13 (Week 190); n= 17 | Percent lymphocytes; visit 14 (Week 208); n= 10 | Percent lymphocytes; visit 15 (Week 225); n= 4 | Percent lymphocytes; visit 16 (Week 242); n= 4 | Percent lymphocytes; visit 17 (Week 260); n= 4 | Percent lymphocytes; visit 18 (Week 277); n= 2 | Percent lymphocytes; withdrawal visit; n= 78 | Percent lymphocytes; follow up visit; n= 56 | Percent monocytes; visit 1 (Screening); n= 84 | Percent monocytes; visit 2 (Week 13); n= 85 | Percent monocytes; visit 3 (Week 26); n= 71 | Percent monocytes; visit 4 (Week 39); n= 65 | Percent monocytes; visit 5 (Week 52); n= 60 | Percent monocytes; visit 6 (Week 69); n= 58 | Percent monocytes; visit 7 (Week 86); n= 53 | Percent monocytes; visit 8 (Week 104); n= 36 | Percent monocytes; visit 9 (Week 121); n= 35 | Percent monocytes; visit 10 (Week 138); n= 33 | Percent monocytes; visit 11 (Week 156); n= 29 | Percent monocytes; visit 12 (Week 173); n= 24 | Percent monocytes; visit 13 (Week 190); n= 17 | Percent monocytes; visit 14 (Week 208); n= 10 | Percent monocytes; visit 15 (Week 225); n= 4 | Percent monocytes; visit 16 (Week 242); n= 4 | Percent monocytes; visit 17 (Week 260); n= 4 | Percent monocytes; visit 18 (Week 277); n= 2 | Percent monocytes; withdrawal visit; n= 78 | Percent monocytes; follow up visit; n= 56 | Percent neutrophils; visit 1 (Screening); n= 84 | Percent neutrophils; visit 2 (Week 13); n= 85 | Percent neutrophils; visit 3 (Week 26); n= 71 | Percent neutrophils; visit 4 (Week 39); n= 65 | Percent neutrophils; visit 5 (Week 52); n= 60 | Percent neutrophils; visit 6 (Week 69); n= 58 | Percent neutrophils; visit 7 (Week 86); n= 53 | Percent neutrophils; visit 8 (Week 104); n= 37 | Percent neutrophils; visit 9 (Week 121); n= 35 | Percent neutrophils; visit 10 (Week 138); n= 33 | Percent neutrophils; visit 11 (Week 156); n= 29 | Percent neutrophils; visit 12 (Week 173); n= 24 | Percent neutrophils; visit 13 (Week 190); n= 17 | Percent neutrophils; visit 14 (Week 208); n= 10 | Percent neutrophils; visit 15 (Week 225); n= 4 | Percent neutrophils; visit 16 (Week 242); n= 4 | Percent neutrophils; visit 17 (Week 260); n= 4 | Percent neutrophils; visit 18 (Week 277); n= 2 | Percent neutrophils; withdrawal visit; n= 78 | Percent neutrophils; follow up visit; n= 56 | RDW; visit 1 (Screening); n= 85 | RDW; visit 2 (Week 13); n= 89 | RDW; visit 3 (Week 26); n= 74 | RDW; visit 4 (Week 39); n= 69 | RDW; visit 5 (Week 52); n= 64 | RDW; visit 6 (Week 69); n= 62 | RDW; visit 7 (Week 86); n= 55 | RDW; visit 8 (Week 104); n= 41 | RDW; visit 9 (Week 121); n= 36 | RDW; visit 10 (Week 138); n= 36 | RDW; visit 11 (Week 156); n= 31 | RDW; visit 12 (Week 173); n= 24 | RDW; visit 13 (Week 190); n= 18 | RDW; visit 14 (Week 208); n= 10 | RDW; visit 15 (Week 225); n= 4 | RDW; visit 16 (Week 242); n= 4 | RDW; visit 17 (Week 260); n= 4 | RDW; visit 18 (Week 277); n= 2 | RDW; withdrawal visit; n= 79 | RDW; follow up visit; n= 59 |
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Retigabine IR | -0.00 | -0.06 | -0.03 | 0.07 | 0.04 | -0.02 | -0.02 | 0.11 | -0.06 | -0.02 | -0.00 | -0.06 | -0.01 | -0.03 | 0.00 | 0.03 | 0.03 | 0.25 | 0.01 | -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 | -0.43 | 0.00 | 1.65 | -0.83 | -1.30 | -2.21 | -0.40 | -1.14 | 0.27 | -2.58 | -1.26 | -0.53 | 0.69 | -2.27 | -3.91 | -4.52 | -3.19 | -4.73 | -3.72 | -6.58 | -3.88 | -5.85 | -8.10 | -2.60 | -0.81 | -0.33 | 0.27 | 0.86 | 0.76 | -0.01 | 0.64 | 0.94 | 0.04 | -0.11 | 0.15 | -0.27 | -0.44 | -1.43 | -0.71 | 1.08 | 1.25 | 2.03 | 4.20 | 0.48 | -0.35 | 2.60 | 0.19 | 0.60 | -0.66 | 3.31 | 0.90 | -0.09 | -0.81 | 2.91 | 4.70 | 5.58 | 4.39 | 7.55 | 6.95 | 7.03 | 3.03 | 3.80 | 2.00 | 2.94 | 2.58 | 0.41 | -0.07 | 0.05 | 0.47 | 0.35 | 0.05 | 0.05 | 0.32 | -0.19 | 0.22 | 0.94 | 0.41 | 0.88 | 1.98 | 0.28 | 3.95 | 2.50 | 2.05 | 0.10 | 0.27 |
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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
Intervention | Milliliter (mL) (Mean) |
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| Visit 3 (Week 26); n= 77 | Visit 5 (Week 52); n= 64 | Visit 8 (Week 104); n= 40 | Visit 11 (Week 156); n= 25 | Visit 14 (Week 208); n= 10 | Visit 17 (Week 260); n= 4 | Withdrawal visit; n= 67 |
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Retigabine IR | -6.0 | 2.7 | 3.9 | 2.0 | -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
Intervention | Tetra cells per liter (TI/L) (Mean) |
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| Visit 1 (Screening); n= 85 | Visit 2 (Week 13); n= 89 | Visit 3 (Week 26); n= 74 | Visit 4 (Week 39); n= 69 | Visit 5 (Week 52); n= 64 | Visit 6 (Week 69); n= 62 | Visit 7 (Week 86); n= 55 | Visit 8 (Week 104); n= 41 | Visit 9 (Week 121); n= 36 | Visit 10 (Week 138); n= 36 | Visit 11 (Week 156); n= 31 | Visit 12 (Week 173); n= 24 | Visit 13 (Week 190); n= 18 | Visit 14 (Week 208); n= 10 | Visit 15 (Week 225); n= 4 | Visit 16 (Week 242); n= 4 | Visit 17 (Week 260); n= 4 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 79 | Follow up visit; n= 59 |
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Retigabine IR | -0.10 | -0.03 | -0.03 | 0.01 | 0.00 | 0.04 | 0.12 | 0.14 | 0.11 | 0.19 | 0.09 | 0.18 | 0.12 | 0.05 | 0.13 | 0.10 | 0.00 | 0.05 | 0.10 | 0.07 |
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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
Intervention | Mg of urine albumin/ mmol of creatinine (Mean) |
---|
| Visit 1 (Screening); n= 39 | Visit 2 (Week 13); n= 72 | Visit 3 (Week 26); n= 54 | Visit 4 (Week 39); n= 53 | Visit 5 (Week 52); n= 52 | Visit 6 (Week 69); n= 46 | Visit 7 (Week 86); n= 47 | Visit 8 (Week 104); n= 32 | Visit 9 (Week 121); n= 30 | Visit 10 (Week 138); n= 26 | Visit 11 (Week 156); n= 22 | Visit 12 (Week 173); n= 19 | Visit 13 (Week 190); n= 10 | Visit 14 (Week 208); n= 8 | Visit 15 (Week 225); n= 4 | Visit 16 (Week 242); n= 3 | Visit 17 (Week 260); n= 3 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 63 | Follow up visit; n= 48 |
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Retigabine IR | -0.57 | -0.07 | 0.15 | -0.64 | -0.69 | -0.53 | 0.07 | -0.75 | -0.89 | -1.05 | -0.65 | -1.81 | -0.59 | -1.70 | 0.13 | -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
Intervention | Milligrams per liter (mg/L) (Mean) |
---|
| Visit 1 (Screening); n= 39 | Visit 2 (Week 13); n= 72 | Visit 3 (Week 26); n= 54 | Visit 4 (Week 39); n= 53 | Visit 5 (Week 52); n= 52 | Visit 6 (Week 69); n= 46 | Visit 7 (Week 86); n= 47 | Visit 8 (Week 104); n= 32 | Visit 9 (Week 121); n= 30 | Visit 10 (Week 138); n= 26 | Visit 11 (Week 156); n= 22 | Visit 12 (Week 173); n= 19 | Visit 13 (Week 190); n= 10 | Visit 14 (Week 208); n= 8 | Visit 15 (Week 225); n= 4 | Visit 16 (Week 242); n= 3 | Visit 17 (Week 260); n= 3 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 63 | Follow up visit; n= 48 |
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Retigabine IR | -5.2 | -1.8 | -17.1 | -21.0 | -21.6 | -15.7 | 7.7 | -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
Intervention | µmol/L (Mean) |
---|
| Visit 1 (Screening); n= 52 | Visit 2 (Week 13); n= 89 | Visit 3 (Week 26); n= 75 | Visit 4 (Week 39); n= 66 | Visit 5 (Week 52); n= 63 | Visit 6 (Week 69); n= 59 | Visit 7 (Week 86); n= 55 | Visit 8 (Week 104); n= 42 | Visit 9 (Week 121); n= 37 | Visit 10 (Week 138); n= 35 | Visit 11 (Week 156); n= 30 | Visit 12 (Week 173); n= 23 | Visit 13 (Week 190); n= 19 | Visit 14 (Week 208); n= 10 | Visit 15 (Week 225); n= 5 | Visit 16 (Week 242); n= 4 | Visit 17 (Week 260); n= 4 | Visit 18 (Week 277); n= 2 | Withdrawal visit; n= 80 | Follow up visit; n= 60 |
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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 | -3604.1 | 3238.3 | -675.0 | -5426.3 | 148.8 | -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
Intervention | Score on AUA SS scale (Mean) |
---|
| Visit 3 (Week 26); n= 82 | Visit 5 (Week 52); n= 68 | Visit 8 (Week 104); n= 42 | Visit 11 (Week 156); n= 31 | Visit 14 (Week 208); n= 10 | Visit 17 (Week 260); n= 4 | Withdrawal visit; n= 85 |
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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
Intervention | Participants (Number) |
---|
| 0 to <25 percent reduction | 25 to <50 percent reduction | 50 to <75 percent reduction | 75 to 100 percent reduction |
---|
Retigabine IR | 7 | 13 | 26 | 42 |
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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
Intervention | Participants (Number) |
---|
| Seizure free for 6 months; n= 85 | Seizure free for 12 months; n= 71 |
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Retigabine IR | 27 | 13 |
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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
Intervention | Participants (Number) |
---|
| Any abnormal discoloration | Discoloration of skin | Discoloration of lips | Discoloration of nails | Discoloration of mucosa |
---|
Retigabine IR | 11 | 5 | 3 | 10 | 9 |
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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
Intervention | Participants (Number) |
---|
| Any AE | Any SAE |
---|
Retigabine IR in SFUCP | 3 | 1 |
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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
Intervention | Participants (Number) |
---|
| ALT; high; n= 98 | Alk.phosphatase; high; n= 98 | AST; high; n= 98 | Calcium; high; n= 98 | Calcium; low; n= 98 | CO2 content/bicarbonate; high; n= 98 | CO2 content/bicrbonate; low; n= 98 | Chloride; high; n= 98 | Chloride; low; n= 98 | Creatine kinase; high; n= 98 | Creatinine; high; n= 98 | Direct bilirubin; high; n= 98 | Glucose; high; n= 98 | Glucose; low; n= 98 | LD ; high; n= 98 | Magnesium; high; n= 98 | Magnesium; low; n= 98 | Potassium; high; n= 98 | Potassium; low; n= 98 | Sodium; high; n= 91 | Sodium; low; n= 91 | Total bilirubin; high; n= 98 | Total protein; high; n= 98 | Total protein; low; n= 98 | BUN; high; n= 91 |
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Retigabine IR | 2 | 0 | 1 | 0 | 0 | 0 | 10 | 6 | 2 | 6 | 0 | 0 | 3 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 2 | 1 | 0 | 0 | 0 |
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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
Intervention | Participants (Number) |
---|
| Eosinophils; high; n= 98 | Hematocrit; low; n= 98 | Hemoglobin; low; n= 98 | Platelet count; high; n= 98 | Platelet count; low; n= 98 | Total neutrophils; low; n= 98 | WBC; high; n= 91 | WBC; low; n= 91 |
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Retigabine IR | 7 | 4 | 3 | 1 | 4 | 20 | 2 | 3 |
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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
Intervention | Participants (Number) |
---|
| DBP; decrease of >=15 | DBP; increase of >=15 | HR; decrease of >=15 | HR; increase of >=15 | SBP; decrease of >=20 | SBP; increase of >=20 | Weight; decrease of >=7 percent | Weight; increase of >=7 percent |
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Retigabine IR | 15 | 7 | 15 | 18 | 18 | 8 | 10 | 32 |
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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
Intervention | Participants (Number) |
---|
| Retinal pigmentary abnormality | Non-retinal ocular pigmentary abnormality |
---|
Retigabine IR in SFUCP | 1 | 1 |
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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
Intervention | Participants (Number) |
---|
| Suicidal ideation | Suicidal behavior | Self-injurious behavior, no suicidal attempt |
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Retigabine IR | 1 | 0 | 0 |
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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
Intervention | Participants (Number) |
---|
| Any TEAE | Any TESAE |
---|
Retigabine IR | 38 | 4 |
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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
Intervention | Participants (Number) |
---|
| Albumin/creatinine ratio; high; n= 96 | RBC; high; n= 98 | WBC; high; n= 91 | Specific gravity; high; n= 91 | Specific gravity; low; n= 91 | pH; high; n= 98 | pH; low; n= 98 |
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Retigabine IR | 4 | 54 | 59 | 4 | 0 | 1 | 0 |
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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
Intervention | Days (Median) |
---|
| Retinal Pigmentary Abnormality | Non-Retinal Ocular Pigmentary Abnormality |
---|
Retigabine IR in SFUCP | 157.0 | 119.0 |
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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
Intervention | Femtoliters (FL) (Mean) |
---|
Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 0.52 |
Regimen A: E/R 300/450 mg Then 600 mg | 0.45 |
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 1.00 |
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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
Intervention | Millimoles per liter (MMOL/L) (Mean) |
---|
| Calcium, n=4, 4, 3 | Chloride, n=4, 4, 3 | Carbon dioxide content/bicarbonate, n=4, 4, 3 | Glucose, n=4, 4, 3 | Potassium, n=4, 4, 3 | Sodium, n=4, 4, 3 | Inorganic phosphorus, n=4, 3, 1 | Urea/BUN, n=4, 4, 3 |
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Regimen A: E/R 300/450 mg Then 600 mg | -0.04366 | 3.0 | -1.5 | 0.15265 | 0.17 | 2.0 | -0.04305 | 0.7140 |
,Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 0.02495 | 3.0 | -2.7 | 0.29605 | 0.20 | 2.3 | 0.09687 | 1.3090 |
,Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 0.00624 | 1.8 | 0.8 | 0.69388 | 0.08 | 1.8 | -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
Intervention | Micromoles per liter (UMOL/L) (Mean) |
---|
| Direct bilirubin, n=1, 2, 1 | Total bilirubin, n=4, 4, 3 | Creatinine, n=4, 4, 3 | Uric acid, n=4, 3, 1 |
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Regimen A: E/R 300/450 mg Then 600 mg | 2.7360 | 2.138 | -4.1990 | 15.8613 |
,Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | -0.8550 | 4.560 | 0.5893 | 23.7920 |
,Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 2.7360 | 0.855 | 1.3260 | 16.3570 |
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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)
Intervention | Participants (Number) |
---|
| UOB, T1, D1, 80, n=5, 0, 0, 0, 0 | UOB, T1, D1, Negative, n=5, 0, 0, 0, 0 | UOB, T1, D1, Trace, n=5, 0, 0, 0, 0 | UOB, T1, D7, 80, n=5, 0, 0, 0, 0 | UOB, T1, D7, Negative, n=5, 0, 0, 0, 0 | UOB, T1, D7, Trace, n=5, 0, 0, 0, 0 | UOB, T2, D7, 80, n=0, 5, 0, 0, 0 | UOB, T2, D7, Negative, n=0, 5, 0, 0, 0 | UOB, T2, D7, Trace, n=0, 5, 0, 0, 0 | UOB, T3, D7, 80, n=0, 0, 4, 0, 0 | UOB, T3, D7, Negative, n=0, 0, 4, 0, 0 | UOB, T3, D7, Trace, n=0, 0, 4, 0, 0 | UOB, T3, D14, 80, n=0, 0, 1, 0, 0 | UOB, T3,D14, Negative, n=0, 0, 1, 0, 0 | UOB, T3, D14, Trace, n=0, 0, 1, 0, 0 | Urine Occult Blood, T4, D7, 80, n=0,0,0,3,0 | UOB, T4, D7, Negative, n=0, 0, 0, 3, 0 | Urine Occult Blood, T4, D7, Trace, n=0,0,0,3,0 | UOB, T5, D7, 80, n=0, 0, 0, 0, 3 | UOB, T5, D7, Negative, n=0, 0, 0, 0, 3 | UOB, T5, D7, Trace, n=0, 0, 0, 0, 3 | UG, T1, D1, 80, n=5, 0, 0, 0, 0 | UG, T1, D1, Negative, n=5, 0, 0, 0, 0 | UG, T1, D1, Trace, n=5, 0, 0, 0, 0 | UG, T1, D7, 80, n=5, 0, 0, 0, 0 | UG, T1, D7, Negative, n=5, 0, 0, 0, 0 | UG, T1, D7, Trace, n=5, 0, 0, 0, 0 | UG, T2, D7, 80, n=0, 5, 0, 0, 0 | UG, T2, D7, Negative, n=0, 5, 0, 0, 0 | UG, T2, D7, Trace, n=0, 5, 0, 0, 0 | UG, T3, D7, 80, n=0, 0, 4, 0, 0 | UG, T3, D7, Negative, n=0, 0, 4, 0, 0 | UG, T3, D7, Trace, n=0, 0, 4, 0, 0 | UG, T3, D14, 80, n=0, 0,1,0,0 | UG, T3, D14, Negative, n=0, 0, 1, 0, 0 | UG, T3, D14, Trace, n=0, 0, 1, 0, 0 | UG, T4, D7, 80, n=0, 0, 0, 4, 0 | UG, T4, D7, Negative, n=0, 0, 0, 4, 0 | UG, T4, D7, Trace, n=0, 0, 0, 4, 0 | UG, T5, D7, 80, n=0, 0, 0, 0, 3 | UG, T5, D7, Negative, n=0, 0, 0, 0, 3 | UG, T5, D7, Trace, n=0, 0, 0, 0, 3 | UK, T1, D1, 80, n=5, 0, 0, 0, 0 | UK, T1, D1, Negative, n=5, 0, 0, 0, 0 | UK, T1, D1, Trace, n=5, 0, 0, 0, 0 | UK, T1, D7, 80, n=5, 0, 0, 0, 0 | UK, T1, D7, Negative, n=5, 0, 0, 0, 0 | UK, T1, D7, Trace, n=5, 0, 0, 0, 0 | UK, T2, D7, 80, n=0, 5, 0, 0, 0 | UK, T2, D7, Negative, n=0, 5, 0, 0, 0 | UK, T2, D7, Trace, n=0, 5, 0, 0, 0 | UK, T3, D7, 80, n=0, 0, 4, 0, 0 | UK, T3, D7, Negative, n=0, 0, 4, 0, 0 | UK, T3, D7, Trace, n=0, 0, 4, 0, 0 | UK, T3, D14, 80, n=0, 0, 1, 0, 0 | UK, T3, D14, Negative, n=0, 0, 1, 0, 0 | UK, T3, D14, Trace, n=0, 0, 1, 0, 0 | UK, T4, D7, 80, n=0, 0, 0, 4, 0 | UK, T4, D7, Negative, n=0, 0, 0, 4, 0 | UK, T4, D7, Trace, n=0, 0, 0, 4, 0 | UK, T5, D7, 80, n=0, 0, 0, 0, 3 | UK, T5, D7, Negative, n=0, 0, 0, 0, 3 | UK, T5, D7, Trace, n=0, 0, 0, 0, 3 | UP, T1, D1, 80, n=5, 0, 0, 0, 0 | UP, T1, D1, Negative, n=5, 0, 0, 0, 0 | UP, T1, D1, Trace, n=5, 0, 0, 0, 0 | UP, T1, D7, 80, n=5, 0, 0, 0, 0 | UP, T1, D7, Negative, n=5, 0, 0, 0, 0 | UP, T1, D7, Trace, n=5, 0, 0, 0, 0 | UP, T2, D7, 80, n=0, 5, 0, 0, 0 | UP, T2, D7, Negative, n=0, 5, 0, 0, 0 | UP, T2, D7, Trace, n=0, 5, 0, 0, 0 | UP, T3, D7, 80, n=0, 0, 4, 0,0 | UP, T3, D7, Negative, n=0, 0, 4, 0, 0 | UP, T3, D7, Trace, n=0, 0, 4, 0, 0 | UP, T3, D14, 80, n=0, 0, 1, 0, 0 | UP, T3, D14, Negative, n=0, 0, 1, 0, 0 | UP, T3, D14, Trace, n=0, 0, 1, 0, 0 | UP, T4, D7, 80, n=0, 0, 0, 4, 0 | UP, T4, D7, Negative, n=0, 0, 0, 4, 0 | UP, T4, D7, Trace, n=0, 0, 0, 4, 0 | UP, T5, D7, 80, n=0, 0, 0, 0, 3 | UP, T5, D7, Negative, n=0, 0, 0, 0, 3 | UP, T5, D7, Trace, n=0, 0, 0, 0, 3 |
---|
Regimen A: Ezogabine/Retigabine 300 mg | 0 | 4 | 1 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 1 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 |
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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)
Intervention | Participants (Number) |
---|
| Memory impairment | Impaired intellect | Decreased attention | Psychomotor slowing | Decreased muscle strength | Hypertonia | Somnolence | Bicep right | Bicep left | Brachioradialis right | Brachioradialis left | Knee right | Knee left | Ankle right | Ankle left | Planter response right | Planter response left |
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Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg | 0 | 0 | 0 | 0 | 0 | 0 | 1 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
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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
Intervention | Participants (Number) |
---|
| T1, Day 1 pre-dose, Abn NCS, n=5, 0, 0, 0, 0 | T1, Day 1 pre-dose, Abn CS, n=5, 0, 0, 0, 0 | T1, Day 1, 3 h, Abn NCS, n=5, 0, 0, 0, 0 | T1, Day 1, 3 h, Abn CS, n=5, 0, 0, 0, 0 | T1, pre-dose, Abn NCS, n=5, 0, 0, 0, 0 | T1, pre-dose, Abn CS, n=5, 0, 0, 0, 0 | T1, 3 h, Abn NCS, n=5, 0, 0, 0, 0 | T1, 3 h, Abn CS, n=5, 0, 0, 0, 0 | T2, Day 7, Abn NCS, n=0, 5, 0, 0, 0 | T2, Day 7, Abn CS, n=0, 5, 0, 0, 0 | T3, pre-dose, Abn NCS, n=0, 0, 4, 0, 0 | T3, pre-dose, Abn CS, n=0, 0, 4, 0, 0 | T3, 3 h, Abn NCS, n=0, 0, 4, 0, 0 | T3, 3 h, Abn CS, n=0, 0, 4, 0, 0 | T3DH, pre-dose, Abn NCS, n=0, 0, 1, 0, 0 | T3DH, pre-dose, Abn CS, n=0, 0, 1, 0, 0 | T4, Day 7, Abn NCS, n=0, 0, 0, 4, 0 | T4, Day 7, Abn CS, n=0, 0, 0, 4, 0 | T5, pre-dose, Abn NCS, n=0, 0, 0, 0, 3 | T5, pre-dose, Abn CS, n=0, 0, 0, 0, 3 | T5, 3 h, Abn NCS, n=0, 0, 0, 0, 2 | T5, 3 h, Abn CS, n=0, 0, 0, 0, 2 |
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Regimen A: Ezogabine/Retigabine 300 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
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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
Intervention | Nanograms/Milliliter (ng/mL) (Geometric Mean) |
---|
| Cmax | Ctau |
---|
Regimen A: E/R 300/450 mg Then 600 mg | 535.9 | 199.77 |
,Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 750.9 | 287.48 |
,Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 370.0 | 105.32 |
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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
Intervention | Beats per Minute (BPM) (Mean) |
---|
| HR, T1, Day 1 3h, n=5, 0, 0, 0, 0 | HR, T1, Pre-dose, n=5, 0, 0, 0, 0 | HR, T1, 3h, n=5, 0, 0, 0, 0 | HR, T2, Day 7, n=0, 5, 0, 0, 0 | HR, T3, Pre-dose, n=0, 0, 4, 0, 0 | HR, T3, 3h, n=0, 0, 4, 0, 0 | HR, T3DH, Pre-dose, n=0, 0, 1, 0, 0 | HR, T4, Day 7, n=0, 0, 0, 4, 0 | HR, T5, Pre-dose, n=0, 0, 0, 0, 3 | HR, T5, 3h, n=0, 0, 0, 0, 3 |
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Regimen A: Ezogabine/Retigabine 300 mg | 3.6 | -0.8 | 2.8 | NA | NA | NA | NA | NA | NA | NA |
,Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg | NA | NA | NA | 8.2 | NA | NA | NA | NA | NA | NA |
,Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg | NA | NA | NA | NA | 0.5 | 6.0 | 8.0 | NA | NA | NA |
,Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg | NA | NA | NA | NA | NA | NA | NA | 1.8 | NA | NA |
,Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg | NA | NA | NA | NA | NA | NA | NA | NA | 1.7 | 2.3 |
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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
Intervention | Millimeters of Mercury (mmHg) (Mean) |
---|
| SBP, T1, Day 1 3h, n=5, 0, 0, 0, 0 | SBP, T1, Day 7 Pre-dose, n=5, 0, 0, 0, 0 | SBP, T1, Day 7 3h, n=5, 0, 0, 0, 0 | SBP, T2, Day 7, n=0, 5, 0, 0, 0 | SBP, T3, Day 21 Pre-dose, n=0, 0, 4, 0, 0 | SBP, T3, Day 21 3h, n=0, 0, 4, 0, 0 | SBP, T3DH, Pre-dose, n=0, 0, 1, 0, 0 | SBP, T4, Day 28, n=0, 0, 0, 4, 0 | SBP, T5, Day 35 Pre-dose, n=0, 0, 0, 0, 3 | SBP, T5, Day 35 3h, n=0, 0, 0, 0, 3 | DBP, T1, Day 1 3h, n=5, 0, 0, 0, 0 | DBP, T1, Pre-dose, n=5, 0, 0, 0, 0 | DBP, T1, 3h, n=5, 0, 0, 0, 0 | DBP, T2, Day 7, n=0, 5, 0, 0, 0 | DBP, T3, Pre-dose, n=0, 0, 4, 0, 0 | DBP, T3, 3h, n=0, 0, 4, 0, 0 | DBP, T3DH, Pre-dose, n=0, 0, 1, 0, 0 | DBP, T4, Day 7, n=0, 0, 0, 4, 0 | DBP, T5, Pre-dose, n=0, 0, 0, 0, 3 | DBP, T5, 3h, n=0, 0, 0, 0, 3 |
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Regimen A: Ezogabine/Retigabine 300 mg | 2.8 | 2.6 | -1.2 | NA | NA | NA | NA | NA | NA | NA | 1.4 | 0.2 | 4.4 | NA | NA | NA | NA | NA | NA | NA |
,Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg | NA | NA | NA | 5.4 | NA | NA | NA | NA | NA | NA | NA | NA | NA | -0.2 | NA | NA | NA | NA | NA | NA |
,Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg | NA | NA | NA | NA | 11.3 | 3.0 | 13.0 | NA | NA | NA | NA | NA | NA | NA | 1.8 | 3.8 | 23.0 | NA | NA | NA |
,Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg | NA | NA | NA | NA | NA | NA | NA | 3.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | -0.3 | NA | NA |
,Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg | NA | NA | NA | NA | NA | NA | NA | NA | 8.7 | 5.3 | NA | NA | NA | NA | NA | NA | NA | NA | 7.3 | 3.7 |
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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
Intervention | Liters/Hour (Geometric Mean) |
---|
Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 178.6 |
Regimen A: E/R 300/450 mg Then 600 mg | 234.5 |
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 237.9 |
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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
Intervention | Liters (Geometric Mean) |
---|
Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 1130.9 |
Regimen A: E/R 300/450 mg Then 600 mg | 2118.0 |
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 1934.3 |
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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
Intervention | Fraction 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 mg | 0.0017 |
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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
Intervention | Picograms (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 mg | 0.15 |
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
Intervention | Grams per liter (G/L) (Mean) |
---|
| Hemoglobin, n=4, 4, 3 | Mean corpuscle hemoglobin concentration, n=4, 4, 3 |
---|
Regimen A: E/R 300/450 mg Then 600 mg | -10.3 | 0.3 |
,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)
Intervention | ML (Mean) |
---|
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg | 14.4 |
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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
Intervention | 10^12 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)
Intervention | Participants (Number) |
---|
Regimen A: Ezogabine/Retigabine 300 mg | 1 |
Regimen A: Ezogabine/Retigabine 300 mg, Then 450 mg | 1 |
Regimen A: Ezogabine/Retigabine 300/450 mg, Then 600 mg | 1 |
Regimen A: Ezogabine/Retigabine 300/450/600 mg, Then 750 mg | 0 |
Regimen A: Ezogabine/Retigabine 300/450/600/750, Then 900 mg | 0 |
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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)
Intervention | Percent 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
Intervention | Hours (Geometric Mean) |
---|
Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 4.168 |
Regimen A: E/R 300/450 mg Then 600 mg | 5.897 |
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 3.473 |
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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
Intervention | Hour*Nanograms/Milliliter (h.ng/mL) (Geometric Mean) |
---|
Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 1680.0 |
Regimen A: E/R 300/450 mg Then 600 mg | 2558.8 |
Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 3783.8 |
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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
Intervention | Hours (Median) |
---|
Regimen A: Ezogabine/Retigabine (E/R)300 mg | 1.000 |
Regimen A: E/R 300/450 mg Then 600 mg | 1.550 |
Regimen A: E/R 300/450/ 600/750 Then 900 mg | 2.000 |
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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
Intervention | Grams per Liter (G/L) (Mean) |
---|
| Albumin, n=4, 4, 3 | Total 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
Intervention | International Units per Liter (IU/L) (Mean) |
---|
| Alkaline phosphatse, n=4, 4, 3 | Alanine amino transferase, n=4, 4, 3 | Aspartate amino transferase, n=4, 4, 3 | Gamma glutamyl transferase, n=3, 3, 2 |
---|
Regimen A: E/R 300/450 mg Then 600 mg | 10.3 | 35.0 | 10.8 | 111.0 |
,Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 5.0 | -1.0 | 1.7 | 50.5 |
,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
Intervention | Giga (10^9) cells per liter (GI/L) (Mean) |
---|
| Basophils, n=3, 3, 2 | Eosinophils, n=3, 3, 2 | Lymphocytes, n=3, 3, 2 | Monocytes, n=3, 3, 2 | Total neutrophils, n=3, 3, 2 | Platelet count, n=4, 4, 3 | White blood cell count, n=4, 4, 3 |
---|
Regimen A: E/R 300/450 mg Then 600 mg | 0.04 | 0.09 | -0.45 | 0.09 | -0.11 | -15.8 | -0.600 |
,Regimen A: E/R 300/450/ 600/750 mg Then 900 mg | 0.00 | 0.10 | -0.65 | 0.05 | 0.61 | -1.3 | -0.583 |
,Regimen A: Ezogabine/Retigabine (E/R) 300 mg | 0.03 | 0.07 | 14.77 | -0.04 | 14.90 | -17.0 | 0.393 |
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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)
Intervention | Milliliter (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)
Intervention | Micturition voided (Mean) |
---|
| Visit 3, n=8 | Visit 4, n=8 | Visit 5, n=6 | Visit 6, n=9 |
---|
Ezogabine/Retigabine | 8.1 | 9.4 | 9.7 | 9.7 |
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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)
Intervention | Percent change (Mean) |
---|
| Visit 3, n=9 | Visit 4, n=8 | Visit 5, n=7 | Visit 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)
Intervention | mL (Mean) |
---|
| Visit 3, n=8 | Visit 4, n=8 | Visit 5, n=6 | Visit 6, n=9 |
---|
Ezogabine/Retigabine | 2850.1 | 3558.1 | 3470.8 | 2736.1 |
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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)
Intervention | Seconds (Mean) |
---|
| Visit 3, n=9 | Visit 4, n=8 | Visit 5, n=7 | Visit 6, n=10 |
---|
Ezogabine/Retigabine | 0.22 | -1.13 | 9.07 | -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)
Intervention | Scores on a scale (Mean) |
---|
| Visit 3, n=10 | Visit 5, n=7 | Visit 6, n=10 |
---|
Ezogabine/Retigabine | 1.6 | 0.7 | 0.4 |
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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)
Intervention | mL per second (Mean) |
---|
| Visit 3, n=9 | Visit 4, n=8 | Visit 5, n=7 | Visit 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)
Intervention | mL per second (Mean) |
---|
| Visit 3, n=9 | Visit 4, n=8 | Visit 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)
Intervention | Percentage of residual urinary volume (Mean) |
---|
| Visit 3, n=9 | Visit 4, n=8 | Visit 5, n=7 | Visit 6, n=10 |
---|
Ezogabine/Retigabine | 1.09 | 3.77 | -0.18 | 7.56 |
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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)
Intervention | mL (Mean) |
---|
| Visit 3, n=10 | Visit 4, n=8 | Visit 5, n=7 | Visit 6, n=10 |
---|
Ezogabine/Retigabine | -17.2 | -6.3 | -13.9 | 3.5 |
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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)
Intervention | Seconds (Mean) |
---|
| Visit 3, n=9 | Visit 4, n=8 | Visit 5, n=7 | Visit 6, n=10 |
---|
Ezogabine/Retigabine | 2.80 | 3.63 | 6.51 | -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)
Intervention | mL (Mean) |
---|
| Visit 3, n=9 | Visit 4, n=8 | Visit 5, n=7 | Visit 6, n=10 |
---|
Ezogabine/Retigabine | -81.3 | -96.8 | 37.6 | -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
Intervention | Participants (Number) |
---|
Placebo | 0 |
Retigabine 600 mg/Day | 0 |
Retigabine 900 mg/Day | 0 |
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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
Intervention | Percentage of seizure-free days (Mean) |
---|
Placebo | 62.1 |
Retigabine 600 mg/Day | 70.4 |
Retigabine 900 mg/Day | 64.9 |
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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
Intervention | Participants (Number) |
---|
| Responders | Non-Responders |
---|
Placebo | 0 | 25 |
,Retigabine 600 mg/Day | 8 | 18 |
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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
Intervention | Participants (Number) |
---|
| Responders | Non-Responders |
---|
Placebo | 0 | 25 |
,Retigabine 900 mg/Day | 4 | 20 |
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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
Intervention | Percentage of seizure-free days (Mean) |
---|
Placebo | 61.7 |
Retigabine 600 mg/Day | 70.6 |
Retigabine 900 mg/Day | 63.3 |
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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
Intervention | Participants (Number) |
---|
| Responders | Non-Responders |
---|
Placebo | 1 | 24 |
,Retigabine 600 mg/Day | 8 | 18 |
,Retigabine 900 mg/Day | 6 | 18 |
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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
Intervention | Percent 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
Intervention | Percent 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
Intervention | Number of events (Number) |
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| Simple partial seizures (sz)with motor signs | Partial sz evolving to secondary generalized sz | Complex partial seizures | Simple partial seizures without motor signs | Absence seizures | Myoclonic seizures | Clonic seizures | Tonic seizures | Tonic-clonic seizures | Atonic seizures | Unclassified seizures | Status Epilepticus |
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Placebo | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Retigabine 600 mg/Day | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
,Retigabine 900 mg/Day | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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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
Intervention | Participants (Number) |
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Placebo | 0 |
Retigabine 600 mg/Day | 1 |
Retigabine 900 mg/Day | 2 |
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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
Intervention | Participants (Number) |
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| Stage I to Stage II | Stage II to Stage III | Stage III to Stage IV | Stage IV to Stage V | Stage V |
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Retigabine/Ezogabine TID | 0 | 0 | 0 | 2 | 2 |
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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)
Intervention | Days (Number) |
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| Participant 1 | Participant 2 | Participant 3 | Participant 4 |
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Retigabine/Ezogabine TID | 133 | 213 | 196 | 166 |
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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)
Intervention | Participants (Number) |
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Retigabine/Ezogabine TID | 0 |
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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
Intervention | Participants (Number) |
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Retigabine/Ezogabine TID | 0 |
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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)
Intervention | Participants (Number) |
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Retigabine/Ezogabine TID | 0 |
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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)
Intervention | Participants (Number) |
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| Any AE | Any SAE |
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Retigabine/Ezogabine TID | 4 | 0 |
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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
Intervention | Participants (Number) |
---|
Placebo | 0 |
Ezogabine/Retigabine IR | 0 |
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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)
Intervention | Participants (Number) |
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Placebo | 2 |
Ezogabine/Retigabine IR | 4 |
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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
Intervention | International unit per liter (IU/L) (Mean) |
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| ALT; Visit 1-Day 1; n= 28 | ALT; Visit 2 - Month 1; n=27 | ALT; Visit 3 - Month 3; n=24 | ALT; Visit 4 - Month 6; n=19 | ALT; Visit 5 - Month 9; n=17 | ALT; Visit 6 - Month 12; n=15 | ALT; Visit 7 (Month 16); n=14 | ALT; Visit 8 (Month 20); n=12 | ALT; Visit 9 (Month 24); n=11 | ALT; Visit 10 (Month 28); n=10 | ALT; Visit 11 (Month 32); n=9 | ALT; Visit 12 (Month 36); n=4 | ALT; Study Conclusion/Withdrawal; n=27 | ALT ; Follow-Up Visit; n=4 | Alk. Phosph.; Visit 1-Day 1; n= 28 | Alk. Phosph; Visit 2 - Month 1; n=27 | Alk. Phosph; Visit 3 - Month 3; n=24 | Alk. Phosph; Visit 4 - Month 6; n=19 | Alk. Phosph; Visit 5 - Month 9; n=17 | Alk. Phosph; Visit 6 - Month 12; n=15 | Alk. Phosph; Visit 7 (Month 16); n=14 | Alk. Phosph; Visit 8 (Month 20); n=12 | Alk. Phosph; Visit 9 (Month 24); n=11 | Alk. Phosph; Visit 10 (Month 28); n=10 | Alk. Phosph; Visit 11 (Month 32); n=9 | Alk. Phosph; Visit 12 (Month 36); n=4 | Alk. Phosph; Study Conclusion/Withdrawal; n=27 | Alk. Phosph ; Follow-Up Visit; n=4 | AST; Visit 1-Day 1; n= 27 | AST; Visit 2 - Month 1; n=26 | AST; Visit 3 - Month 3; n=24 | AST; Visit 4 - Month 6; n=19 | AST; Visit 5 - Month 9; n=17 | AST; Visit 6 - Month 12; n=15 | AST; Visit 7 (Month 16); n=14 | AST; Visit 8 (Month 20); n=12 | AST; Visit 9 (Month 24); n=11 | AST; Visit 10 (Month 28); n=9 | AST; Visit 11 (Month 32); n=9 | AST; Visit 12 (Month 36); n=4 | AST; Study Conclusion/Withdrawal; n=27 | AST; Follow-Up Visit; n=4 | CK; Visit 1-Day 1; n= 28 | CK; Visit 2 - Month 1; n=27 | CK; Visit 3 - Month 3; n=24 | CK; Visit 4 - Month 6; n=19 | CK; Visit 5 - Month 9; n=17 | CK; Visit 6 - Month 12; n=15 | CK; Visit 7-(Month 16); n=14 | CK; Visit 8 -(Month 20); n=12 | CK; Visit 9 -(Month 24); n=11 | CK; Visit 10-(Month 28); n=10 | CK; Visit 11-(Month 32); n=9 | CK; Visit 12-(Month 36); n=4 | CK; Study Conclusion/Withdrawal; n=27 | CK; Follow-Up Visit; n=4 | GGT; Visit 1-Day 1; n= 28 | GGT; Visit 2 - Month 1; n=27 | GGT; Visit 3 - Month 3; n=24 | GGT; Visit 4 - Month 6; n=19 | GGT; Visit 5 - Month 9; n=17 | GGT; Visit 6 - Month 12; n=15 | GGT; Visit 7-(Month 16); n=14 | GGT; Visit 8 - (Month 20); n=12 | GGT; Visit 9 - (Month 24); n=11 | GGT; Visit 10-(Month 28); n=10 | GGT; Visit 11-(Month 32); n=9 | GGT; Visit 12-(Month 36); n=4 | GGT; StudyConclusion/Withdrawal; n=27 | GGT; Follow-Up Visit; n=4 | LD; Visit 1-Day 1; n=27 | LD; Visit 2 - Month 1; n=26 | LD; Visit 3 - Month 3; n=24 | LD; Visit 4 - Month 6; n=19 | LD; Visit 5 - Month 9; n=17 | LD; Visit 6 - Month 12; n=15 | LD; Visit 7-(Month 16); n=14 | LD; Visit 8 - (Month 20); n=12 | LD; Visit 9 - (Month 24); n=11 | LD; Visit 10-(Month 28); n=9 | LD; Visit 11-(Month 32); n=9 | LD; Visit 12-(Month 36); n=4 | LD; Study Conclusion/Withdrawal; n=27 | LD; Follow-Up Visit; n=4 |
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RTG IR | 0.8 | 3.3 | 0.3 | 0.9 | 0.6 | 1.5 | 0.3 | 0.4 | 0.8 | 1.6 | 7.4 | 0.0 | 1.1 | 9.8 | -1.5 | -2.2 | -2.5 | -5.1 | -4.7 | -2.5 | 0.2 | 0.5 | -3.5 | -5.3 | 5.8 | 7.8 | -2.7 | -21.3 | 0.5 | 2.0 | 0.0 | 1.3 | 2.6 | 2.1 | 1.8 | 1.6 | 2.5 | 2.9 | 4.7 | 0.8 | 1.5 | 7.5 | -103.3 | -72.5 | -88.8 | -10.3 | -10.9 | 11.9 | 9.2 | 1.3 | 4.8 | 2.6 | 93.7 | 26.3 | 24.7 | 261.0 | 4.6 | 4.2 | -4.5 | -2.7 | -2.5 | -4.7 | -3.6 | -13.1 | -6.0 | 8.3 | 24.3 | 10.0 | 2.1 | -3.8 | -1.4 | 0.8 | 1.7 | -8.5 | 1.9 | -1.6 | 1.3 | -0.5 | 12.2 | 8.3 | 18.8 | 8.5 | 2.6 | 2.5 |
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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
Intervention | G/L (Mean) |
---|
| Albumin; Visit 1-Day 1; n=28 | Albumin; Visit 2 - Month 1; n=27 | Albumin; Visit 3 - Month 3; n=24 | Albumin; Visit 4 - Month 6; n=19 | Albumin; Visit 5 - Month 9; n=17 | Albumin; Visit 6 - Month 12; n=15 | Albumin; Visit 7-(Month 16); n=14 | Albumin; Visit 8 - (Month 20); n=12 | Albumin; Visit 9 - (Month 24); n=11 | Albumin; Visit 10-(Month 28); n=10 | Albumin; Visit 11-(Month 32); n=9 | Albumin; Visit 12-(Month 36); n=4 | Albumin; Study Conclusion/Withdrawal; n=27 | Albumin; Follow-Up Visit; n=4 | Total protein; Visit 1-Day 1; n=28 | Total protein; Visit 2 - Month 1; n=27 | Total protein; Visit 3 - Month 3; n=24 | Total protein; Visit 4 - Month 6; n=19 | Total protein; Visit 5 - Month 9; n=17 | Total protein; Visit 6 - Month 12; n=15 | Total protein; Visit 7-(Month 16); n=14 | Total protein; Visit 8 - (Month 20); n=12 | Total protein; Visit 9 - (Month 24); n=11 | Total protein; Visit 10-(Month 28); n=10 | Total protein; Visit 11-(Month 32); n=9 | Total protein; Visit 12-(Month 36); n=4 | Total protein; Study Conclusion/Withdrawal; n=27 | Total protein; Follow-Up Visit; n=4 |
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RTG IR | -0.9 | -0.3 | -0.3 | 0.1 | -0.3 | -1.1 | -0.7 | -0.6 | -0.3 | -0.2 | 1.2 | -0.3 | -0.6 | -0.3 | -0.7 | -0.7 | 0.1 | 0.5 | -0.4 | -0.3 | 0.6 | 1.3 | 2.4 | 2.5 | 3.8 | 1.8 | 0.7 | 0.5 |
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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
Intervention | Participants (Count of Participants) |
---|
| Day 0 | Day 3 | Day 17 | Day 62 | Day 66 | Day 98 | Day 111 | Day 126 | Day 163 | Day 168 | Day 169 | Day 229 | Day 240 | Day 287 | Day 339 | Day 413 | Day 498 | Day 559 | Day 650 | Day 781 | Day 852 | Day 927 | Day 930 | Day 943 | Day 1007 | Day 1008 | Day 1098 | Day 1169 | Day 1233 |
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RTG IR | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
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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
Intervention | Giga unit per liter (GI/L) (Mean) |
---|
| Basophils;Visit 1-Day 1;n=29 | Basophils;Visit 2 - Month 1;n=28 | Basophils;Visit 3 - Month 3;n=26 | Basophils;Visit 4 - Month 6;n=16 | Basophils;Visit 5 - Month 9;n=16 | Basophils;Visit 6 - Month 12;n=13 | Basophils;Visit 7 (Month 16);n=12 | Basophils;Visit 8 (Month 20);n=11 | Basophils;Visit 9 (Month 24);n=10 | Basophils;Visit 10 (Month 28);n=10 | Basophils;Visit 11 (Month 32);n=9 | Basophils;Visit 12 (Month 36);n=4 | Basophils;Study Conclusion/Withdrawal;n=28 | Basophils;Follow-Up Visit;n=5 | Eosinophils;Visit 1-Day 1; n=29 | Eosinophils; Visit 2 - Month 1; n=28 | Eosinophils; Visit 3 - Month 3; n=26 | Eosinophils; Visit 4 - Month 6; n=16 | Eosinophils; Visit 5 - Month 9; n=16 | Eosinophils; Visit 6 - Month 12; n=13 | Eosinophils; Visit 7 (Month 16); n=12 | Eosinophils; Visit 8 (Month 20); n=11 | Eosinophils; Visit 9 (Month 24); n=10 | Eosinophils; Visit 10 (Month 28); n=10 | Eosinophils; Visit 11 (Month 32); n=9 | Eosinophils; Visit 12 (Month 36); n=4 | Eosinophils; Study Conclusion/Withdrawal; n=28 | Eosinophils; Follow-Up Visit; n=5 | Lymphocytes; Visit 1-Day 1; n= 29 | Lymphocytes; Visit 2 - Month 1; n=28 | Lymphocytes; Visit 3 - Month 3; n=26 | Lymphocytes; Visit 4 - Month 6; n=16 | Lymphocytes; Visit 5 - Month 9; n=16 | Lymphocytes; Visit 6 - Month 12; n= 13 | Lymphocytes; Visit 7 (Month 16); n=12 | Lymphocytes; Visit 8 (Month 20); n=11 | Lymphocytes; Visit 9 (Month 24); n=10 | Lymphocytes; Visit 10 (Month 28); n=10 | Lymphocytes; Visit 11 (Month 32); n=9 | Lymphocytes; Visit 12 (Month 36); n=4 | Lymphocytes; Study Conclusion/Withdrawal; n=28 | Lymphocytes; Follow-Up Visit; n=5 | Monocytes; Visit 1-Day 1; n= 29 | Monocytes; Visit 2 - Month 1; n=28 | Monocytes; Visit 3 - Month 3; n=26 | Monocytes; Visit 4 - Month 6; n=16 | Monocytes; Visit 5 - Month 9; n=16 | Monocytes; Visit 6 - Month 12; n= 13 | Monocytes; Visit 7 (Month 16); n=12 | Monocytes; Visit 8 (Month 20); n=11 | Monocytes; Visit 9 (Month 24); n=10 | Monocytes; Visit 10 (Month 28); n=10 | Monocytes; Visit 11 (Month 32); n=9 | Monocytes; Visit 12 (Month 36); n=4 | Monocytes; Study Conclusion/Withdrawal; n=28 | Monocytes; Follow-Up Visit; n=5 | Platelet count; Visit 1-Day 1; n=28 | Platelet count; Visit 2 - Month 1; n=28 | Platelet count; Visit 3 - Month 3; n=25 | Platelet count; Visit 4 - Month 6; n=18 | Platelet count; Visit 5 - Month 9; n=17 | Platelet count; Visit 6 - Month 12; n=15 | Platelet count; Visit 7 (Month 16); n=14 | Platelet count; Visit 8 (Month 20); n=11 | Platelet count; Visit 9 (Month 24); n=11 | Platelet count; Visit 10 (Month 28); n=10 | Platelet count; Visit 11 (Month 32); n=9 | Platelet count; Visit 12 (Month 36); n=4 | Platelet count; Study Conclusion/Withdrawal; n=28 | Platelet count; Follow-Up Visit; n=5 | Total Neutrophils; Visit 1-Day 1; n=30 | Total Neutrophils; Visit 2 - Month 1; n=28 | Total Neutrophils; Visit 3 - Month 3; n=26 | Total Neutrophils; Visit 4 - Month 6; n=16 | Total Neutrophils; Visit 5 - Month 9; n=16 | Total Neutrophils; Visit 6 - Month 12; n=13 | Total Neutrophils; Visit 7 (Month 16); n=12 | Total Neutrophils; Visit 8 (Month 20); n=11 | Total Neutrophils; Visit 9 (Month 24); n=10 | Total Neutrophils; Visit 10 (Month 28); n=10 | Total Neutrophils; Visit 11 (Month 32); n=9 | Total Neutrophils; Visit 12 (Month 36); n=4 | Total Neutrophils;Study Conclusion/Withdrawal;n=28 | Total Neutrophils; Follow-Up Visit; n=5 | WBC ; Visit 1-Day 1; n=30 | WBC ; Visit 2 - Month 1; n=28 | WBC; Visit 3 - Month 3; n=26 | WBC; Visit 4 - Month 6; n=18 | WBC; Visit 5 - Month 9; n=17 | WBC; Visit 6 - Month 12; n=15 | WBC ; Visit 7 (Month 16); n=14 | WBC ; Visit 8 (Month 20); n=12 | WBC ; Visit 9 (Month 24); n=11 | WBC; Visit 10 (Month 28); n=10 | WBC; Visit 11 (Month 32); n=9 | WBC; Visit 12 (Month 36); n=4 | WBC; Study Conclusion/Withdrawal;n=28 | WBC; Follow-Up Visit; n=5 |
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RTG IR | 0.000 | 0.000 | 0.000 | -0.003 | 0.001 | 0.003 | -0.002 | 0.003 | 0.000 | 0.002 | 0.004 | 0.005 | -0.003 | -0.008 | -0.012 | -0.051 | -0.070 | -0.004 | 0.038 | -0.014 | 0.010 | 0.008 | -0.051 | 0.006 | 0.011 | -0.025 | -0.026 | -0.078 | -0.132 | -0.065 | -0.120 | 0.024 | -0.032 | -0.109 | 0.007 | -0.037 | 0.052 | 0.108 | 0.022 | -0.268 | -0.068 | -0.070 | -0.018 | -0.028 | -0.044 | 0.033 | -0.042 | 0.076 | -0.021 | 0.129 | -0.021 | -0.022 | 0.088 | 0.035 | 0.014 | 0.054 | 8.3 | 6.3 | 14.5 | 5.8 | 6.0 | 10.2 | 18.5 | 16.6 | 15.5 | 20.3 | 17.1 | 28.5 | 17.0 | -2.0 | -0.099 | -0.028 | 0.369 | -0.318 | -0.158 | 0.182 | 0.252 | 0.325 | 0.656 | 0.238 | 1.310 | 0.310 | 0.086 | -0.176 | -0.15 | -0.16 | 0.14 | -0.42 | -0.12 | 0.34 | 0.20 | 0.53 | 0.64 | 0.33 | 1.43 | 0.08 | 0.01 | -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
Intervention | Ratio (Mean) |
---|
| Visit 1-Day 1; n=28 | Visit 2 - Month 1; n=27 | Visit 3 - Month 3; n=24 | Visit 4 - Month 6; n=19 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7-(Month 16); n=14 | Visit 8 - (Month 20); n=12 | Visit 9 - (Month 24); n=11 | Visit 10-(Month 28); n=10 | Visit 11-(Month 32); n=9 | Visit 12-(Month 36); n=4 | Study Conclusion/Withdrawal; n=27 | Follow-Up Visit; n=4 |
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RTG IR | 4.2 | 6.2 | 7.0 | 7.0 | 18.11 | 5.5 | 4.2 | 12.8 | 7.0 | 1.9 | 13.8 | 30.0 | 3.1 | 1.0 |
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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
Intervention | Millimoles per liter (mmol/L) (Mean) |
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| Calcium; Visit 1-Day 1; n=27 | Calcium; Visit 2 - Month 1; n=26 | Calcium; Visit 3 - Month 3; n=24 | Calcium; Visit 4 - Month 6; n=19 | Calcium; Visit 5 - Month 9; n=17 | Calcium; Visit 6 - Month 12; n=15 | Calcium; Visit 7-(Month 16); n=14 | Calcium; Visit 8 - (Month 20); n=12 | Calcium; Visit 9 - (Month 24); n=11 | Calcium; Visit 10-(Month 28); n=9 | Calcium; Visit 11-(Month 32); n=9 | Calcium; Visit 12-(Month 36); n=4 | Calcium; StudyConclusion/Withdrawal; n=27 | Calcium; Follow-Up Visit; n=4 | CO2 content/Bicarb; Visit 1-Day 1; n=27 | CO2 content/Bicarb; Visit 2 - Month 1; n=26 | CO2 content/Bicarb; Visit 3 - Month 3; n=24 | CO2 content/Bicarb; Visit 4 - Month 6; n=19 | CO2 content/Bicarb; Visit 5 - Month 9; n=17 | CO2 content/Bicarb; Visit 6 - Month 12; n=15 | CO2 content/Bicarb; Visit 7-(Month 16); n=14 | CO2 content/Bicarb; Visit 8 - (Month 20); n=12 | CO2 content/Bicarb; Visit 9 - (Month 24); n=11 | CO2 content/Bicarb; Visit 10-(Month 28); n=9 | CO2 content/Bicarb; Visit 11-(Month 32); n=9 | CO2 content/Bicarb; Visit 12-(Month 36); n=4 | CO2content/Bicarb;Study Conclusion/Withdrawal;n=27 | CO2 content/Bicarb; Follow-Up Visit; n=4 | Chloride; Visit 1-Day 1; n=28 | Chloride; Visit 2 - Month 1; n=27 | Chloride; Visit 3 - Month 3; n=24 | Chloride; Visit 4 - Month 6; n=19 | Chloride; Visit 5 - Month 9; n=17 | Chloride; Visit 6 - Month 12; n=15 | Chloride; Visit 7-(Month 16); n=14 | Chloride; Visit 8 - (Month 20); n=12 | Chloride; Visit 9 - (Month 24); n=11 | Chloride; Visit 10-(Month 28); n=10 | Chloride; Visit 11-(Month 32); n=9 | Chloride; Visit 12-(Month 36); n=4 | Chloride; StudyConclusion/Withdrawal;n=27 | Chloride; Follow-Up Visit; n=4 | Glucose; Visit 1-Day 1; n=28 | Glucose; Visit 2 - Month 1; n=27 | Glucose; Visit 3 - Month 3; n=24 | Glucose; Visit 4 - Month 6; n=19 | Glucose; Visit 5 - Month 9; n=17 | Glucose; Visit 6 - Month 12; n=15 | Glucose; Visit 7-(Month 16); n=14 | Glucose; Visit 8 - (Month 20); n=12 | Glucose; Visit 9 - (Month 24); n=11 | Glucose; Visit 10-(Month 28); n=10 | Glucose; Visit 11-(Month 32); n=9 | Glucose; Visit 12-(Month 36); n=4 | Glucose; StudyConclusion/Withdrawal;n=27 | Glucose; Follow-Up Visit; n=4 | Magnesium; Visit 1-Day 1; n=28 | Magnesium; Visit 2 - Month 1; n=27 | Magnesium; Visit 3 - Month 3; n=24 | Magnesium; Visit 4 - Month 6; n=19 | Magnesium; Visit 5 - Month 9; n=17 | Magnesium; Visit 6 - Month 12; n=15 | Magnesium; Visit 7-(Month 16); n=14 | Magnesium; Visit 8 - (Month 20); n=12 | Magnesium; Visit 9 - (Month 24); n=11 | Magnesium; Visit 10-(Month 28); n=10 | Magnesium; Visit 11-(Month 32); n=9 | Magnesium; Visit 12-(Month 36); n=4 | Magnesium; Study Conclusion/Withdrawal;n=27 | Magnesium; Follow-Up Visit; n=4 | Potassium; Visit 1-Day 1; n=27 | Potassium; Visit 2 - Month 1; n=26 | Potassium; Visit 3 - Month 3; n=24 | Potassium; Visit 4 - Month 6; n=19 | Potassium; Visit 5 - Month 9; n=17 | Potassium; Visit 6 - Month 12; n=15 | Potassium; Visit 7-(Month 16); n=14 | Potassium; Visit 8 - (Month 20); n=12 | Potassium; Visit 9 - (Month 24); n=11 | Potassium; Visit 10-(Month 28); n=9 | Potassium; Visit 11-(Month 32); n=9 | Potassium; Visit 12-(Month 36); n=4 | Potassium; Study Conclusion/Withdrawal;n=27 | Potassium; Follow-Up Visit; n=4 | Sodium; Visit 1-Day 1; n=28 | Sodium; Visit 2 - Month 1; n=27 | Sodium; Visit 3 - Month 3; n=24 | Sodium; Visit 4 - Month 6; n=19 | Sodium; Visit 5 - Month 9; n=17 | Sodium; Visit 6 - Month 12; n=15 | Sodium; Visit 7-(Month 16); n=14 | Sodium; Visit 8 - (Month 20); n=12 | Sodium; Visit 9 - (Month 24); n=11 | Sodium; Visit 10-(Month 28); n=10 | Sodium; Visit 11-(Month 32); n=9 | Sodium; Visit 12-(Month 36); n=4 | Sodium; StudyConclusion/Withdrawal;n=27 | Sodium; Follow-Up Visit; n=4 | Urea/BUN; Visit 1-Day 1; n=28 | Urea/BUN; Visit 2 - Month 1; n=27 | Urea/BUN; Visit 3 - Month 3; n=24 | Urea/BUN; Visit 4 - Month 6; n=19 | Urea/BUN; Visit 5 - Month 9; n=17 | Urea/BUN; Visit 6 - Month 12; n=15 | Urea/BUN; Visit 7-(Month 16); n=14 | Urea/BUN; Visit 8 - (Month 20); n=12 | Urea/BUN; Visit 9 - (Month 24); n=11 | Urea/BUN; Visit 10-(Month 28); n=10 | Urea/BUN; Visit 11-(Month 32); n=9 | Urea/BUN; Visit 12-(Month 36); n=4 | Urea/BUN; Study Conclusion/Withdrawal;n=27 | Urea/BUN; Follow-Up Visit; n=4 |
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RTG IR | -0.015 | -0.009 | 0.017 | 0.009 | 0.020 | -0.013 | 0.009 | 0.013 | 0.006 | 0.012 | 0.026 | 0.013 | 0.015 | 0.068 | -0.3 | -0.3 | -0.3 | -0.6 | -0.5 | -0.9 | -0.1 | -0.8 | -1.5 | -1.8 | 2.4 | -1.5 | -1.0 | 0.8 | -0.4 | -0.2 | -0.2 | -0.3 | 0.1 | 0.6 | 0.7 | 1.3 | 1.0 | 0.9 | 1.3 | -1.5 | -0.4 | -0.8 | -0.42 | 0.13 | 0.12 | 0.55 | 0.32 | 0.05 | 1.97 | 0.08 | 0.49 | 1.14 | 1.13 | 1.75 | 0.72 | -0.30 | -0.004 | -0.017 | -0.019 | -0.016 | 0.006 | 0.027 | 0.041 | 0.040 | 0.035 | 0.058 | 0.050 | 0.020 | 0.016 | 0.053 | 0.01 | -0.05 | 0.00 | 0.07 | 0.01 | 0.10 | 0.06 | 0.09 | 0.08 | 0.21 | -0.02 | 0.18 | -0.02 | 0.20 | -0.9 | -0.3 | 0.8 | -0.3 | 0.7 | 0.7 | 0.2 | 0.8 | 1.1 | 1.3 | 1.2 | -2.0 | 0.2 | 0.5 | 0.14 | 0.36 | 0.46 | 0.37 | 0.62 | 0.51 | 0.25 | 0.91 | 0.46 | 0.39 | 0.77 | 1.90 | 0.18 | 0.25 |
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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
Intervention | Micromoles per liter (µmol/L) (Mean) |
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| Creatinine; Visit 1-Day 1; n=28 | Creatinine; Visit 2 - Month 1; n=27 | Creatinine; Visit 3 - Month 3; n=24 | Creatinine; Visit 4 - Month 6; n=19 | Creatinine; Visit 5 - Month 9; n=17 | Creatinine; Visit 6 - Month 12; n=15 | Creatinine; Visit 7-(Month 16); n=14 | Creatinine; Visit 8 - (Month 20); n=12 | Creatinine; Visit 9 - (Month 24); n=11 | Creatinine; Visit 10-(Month 28); n=10 | Creatinine; Visit 11-(Month 32); n=9 | Creatinine; Visit 12-(Month 36); n=4 | Creatinine; Study Conclusion/Withdrawal;n=27 | Creatinine; Follow-Up Visit; n=4 | Direct Bilirubin; Visit 1-Day 1; n=28 | Direct Bilirubin; Visit 2 - Month 1; n=27 | Direct Bilirubin; Visit 3 - Month 3; n=24 | Direct Bilirubin; Visit 4 - Month 6; n=19 | Direct Bilirubin; Visit 5 - Month 9; n=17 | Direct Bilirubin; Visit 6 - Month 12; n=15 | Direct Bilirubin; Visit 7-(Month 16); n=14 | Direct Bilirubin; Visit 8 - (Month 20); n=12 | Direct Bilirubin; Visit 9 - (Month 24); n=11 | Direct Bilirubin; Visit 10-(Month 28); n=10 | Direct Bilirubin; Visit 11-(Month 32); n=9 | Direct Bilirubin; Visit 12-(Month 36); n=4 | Direct Bilirubin; Study Conclusion/Withdrawal;n=27 | Direct Bilirubin; Follow-Up Visit; n=4 | Total Bilirubin; Visit 1-Day 1; n=28 | Total Bilirubin; Visit 2 - Month 1; n=27 | Total Bilirubin; Visit 3 - Month 3; n=24 | Total Bilirubin; Visit 4 - Month 6; n=19 | Total Bilirubin; Visit 5 - Month 9; n=17 | Total Bilirubin; Visit 6 - Month 12; n=15 | Total Bilirubin; Visit 7-(Month 16); n=14 | Total Bilirubin; Visit 8 - (Month 20); n=12 | Total Bilirubin; Visit 9 - (Month 24); n=11 | Total Bilirubin; Visit 10-(Month 28); n=10 | Total Bilirubin; Visit 11-(Month 32); n=9 | Total Bilirubin; Visit 12-(Month 36); n=4 | Total Bilirubin; Study Conclusion/Withdrawal;n=27 | Total Bilirubin; Follow-Up Visit; n=4 | Uric acid; Visit 1-Day 1; n=28 | Uric acid; Visit 2 - Month 1; n=27 | Uric acid; Visit 3 - Month 3; n=24 | Uric acid; Visit 4 - Month 6; n=19 | Uric acid; Visit 5 - Month 9; n=17 | Uric acid; Visit 6 - Month 12; n=15 | Uric acid; Visit 7-(Month 16); n=14 | Uric acid; Visit 8 - (Month 20); n=12 | Uric acid; Visit 9 - (Month 24); n=11 | Uric acid; Visit 10-(Month 28); n=10 | Uric acid; Visit 11-(Month 32); n=9 | Uric acid; Visit 12-(Month 36); n=4 | Uric acid; Study Conclusion/Withdrawal;n=26 | Uric acid; Follow-Up Visit; n=4 |
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RTG IR | -2.18 | -0.79 | -0.35 | -1.39 | 0.32 | 0.61 | -0.94 | -0.05 | -0.15 | 4.31 | -3.30 | -2.73 | -0.08 | 4.30 | -0.2 | 0.0 | 0.0 | 0.0 | -0.2 | -0.1 | -0.1 | -0.1 | -0.2 | -0.1 | -0.2 | 0.0 | 0.0 | 0.3 | 3.0 | 3.7 | 3.8 | 3.7 | 2.8 | 3.1 | 3.5 | 2.8 | 2.7 | 3.0 | 2.6 | 4.5 | 2.9 | 2.3 | -0.6 | 6.3 | -5.8 | 0.3 | 4.3 | -5.5 | -15.0 | -10.5 | 8.6 | 6.3 | -5.2 | -30.3 | 9.7 | 15.8 |
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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
Intervention | Proportion of red blood cells in blood (Mean) |
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| Visit 1-Day 1; n=30 | Visit 2 - Month 1; n=28 | Visit 3 - Month 3; n=26 | Visit 4 - Month 6; n=18 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7 (Month 16); n=14 | Visit 8 (Month 20); n=12 | Visit 9 (Month 24); n=11 | Visit 10 (Month 28); n=10 | Visit 11 (Month 32); n=9 | Visit 12 (Month 36); n=4 | Study Conclusion/Withdrawal;n=28 | Follow-Up Visit; n=5 |
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RTG IR | -0.0035 | -0.0048 | -0.0033 | -0.0022 | -0.0004 | -0.0014 | 0.0027 | 0.0105 | 0.0174 | 0.0189 | 0.0344 | 0.0408 | 0.0055 | 0.0048 |
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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
Intervention | Gram per Liter (G/L) (Mean) |
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| Hemoglobin; Visit 1-Day 1; n=30 | Hemoglobin; Visit 2 - Month 1; n=28 | Hemoglobin; Visit 3 - Month 3; n=26 | Hemoglobin; Visit 4 - Month 6; n=18 | Hemoglobin; Visit 5 - Month 9; n=17 | Hemoglobin; Visit 6 - Month 12; n=15 | Hemoglobin; Visit 7 (Month 16); n=14 | Hemoglobin; Visit 8 (Month 20); n=12 | Hemoglobin; Visit 9 (Month 24); n=11 | Hemoglobin; Visit 10 (Month 28); n=10 | Hemoglobin; Visit 11 (Month 32); n=9 | Hemoglobin; Visit 12 (Month 36); n=4 | Hemoglobin; Study Conclusion/Withdrawal;n=28 | Hemoglobin; Follow-Up Visit; n=5 | MCHC; Visit 1-Day 1; n=30 | MCHC; Visit 2 - Month 1; n=28 | MCHC; Visit 3 - Month 3; n=26 | MCHC; Visit 4 - Month 6; n=18 | MCHC; Visit 5 - Month 9; n=17 | MCHC; Visit 6 - Month 12; n=15 | MCHC; Visit 7 (Month 16); n=14 | MCHC; Visit 8 (Month 20); n=12 | MCHC; Visit 9 (Month 24); n=11 | MCHC; Visit 10 (Month 28); n=10 | MCHC; Visit 11 (Month 32); n=9 | MCHC; Visit 12 (Month 36); n=4 | MCHC; StudyConclusion/Withdrawal;n=28 | MCHC; Follow-Up Visit; n=5 |
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RTG IR | -2.6 | -2.8 | -2.2 | -0.2 | -0.8 | -1.9 | -1.5 | 2.3 | 2.6 | 1.9 | 9.1 | 8.0 | 1.3 | 1.8 | -3.1 | -2.9 | -2.4 | 1.2 | -1.1 | -2.6 | -5.1 | -2.3 | -6.4 | -9.9 | -4.6 | -12.8 | -1.3 | 0.8 |
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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
Intervention | Picogram (Pg) (Mean) |
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| Visit 1-Day 1; n=30 | Visit 2 - Month 1; n=28 | Visit 3 - Month 3; n=26 | Visit 4 - Month 6; n=18 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7 (Month 16); n=14 | Visit 8 (Month 20); n=12 | Visit 9 (Month 24); n=11 | Visit 10 (Month 28); n=10 | Visit 11 (Month 32); n=9 | Visit 12 (Month 36); n=4 | StudyConclusion/Withdrawal; n=28 | Follow-Up Visit; n=5 |
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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
Intervention | Femtoliter (fL) (Mean) |
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| MCV; Visit 1-Day 1; n=30 | MCV; Visit 2 - Month 1; n=28 | MCV; Visit 3 - Month 3; n=26 | MCV; Visit 4 - Month 6; n=18 | MCV; Visit 5 - Month 9; n=17 | MCV; Visit 6 - Month 12; n=15 | MCV; Visit 7-(Month 16); n=14 | MCV; Visit 8-(Month 20); n=12 | MCV; Visit 9-(Month 24); n=11 | MCV; Visit 10-(Month 28); n=10 | MCV; Visit 1- (Month 32); n=9 | MCV; Visit 12- (Month 36); n=4 | MCV; StudyConclusion/Withdrawal; n=28 | MCV; Follow-Up Visit; n=5 | MPV; Visit 1- Day 1; n=28 | MPV; Visit 2 - Month 1; n=28 | MPV; Visit 3 - Month 3; n=25 | MPV; Visit 4 - Month 6; n=18 | MPV; Visit 5 - Month 9; n=17 | MPV; Visit 6 - Month 12; n=15 | MPV; Visit 7-(Month 16); n=14 | MPV; Visit 8-(Month 20); n=11 | MPV; Visit 9-(Month 24); n=11 | MPV; Visit 10-(Month 28); n=10 | MPV; Visit 11- (Month 32); n=9 | MPV; Visit 12- (Month 36); n=4 | MPV; StudyConclusion/Withdrawal; n=28 | MPV; Follow-Up Visit; n=5 |
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RTG IR | 0.1 | 0.4 | 0.1 | -0.7 | -1.1 | -1.2 | -0.1 | -1.3 | -0.7 | 0.8 | -0.8 | -0.8 | -1.0 | -2.2 | -0.43 | -0.41 | -0.34 | -0.07 | -0.32 | -0.19 | -0.36 | -0.15 | 0.07 | -0.14 | 0.21 | -0.73 | -0.18 | 0.28 |
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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
Intervention | Milliliter (mL) (Mean) |
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| Visit 1-Day 1; n=29 | Visit 2 - Month 1; n=28 | Visit 3 - Month 3; n=25 | Visit 6 - Month 12; n=15 | Visit 7-(Month 16); n=1 | Visit 9 - (Month 24); n=10 | Visit 12-(Month 36); n=4 | Visit 13 (Month 40); n=1 | Study Conclusion/Withdrawal;n=29 | Follow-Up Visit; n=3 |
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RTG IR | -3.4 | 9.2 | 2.0 | 1.7 | -8.0 | -8.2 | -13.1 | 35.0 | -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
Intervention | Tetra unit per liter (TI/L) (Mean) |
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| Visit 1- Day 1; n=30 | Visit 2 - Month 1; n=28 | Visit 3 - Month 3; n=26 | Visit 4 - Month 6; n=18 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7 - (Month 16); n=14 | Visit 8 - (Month 20); n=12 | Visit 9 - (Month 24); n=11 | Visit 10 -(Month 28); n=10 | Visit 11- (Month 32); n=9 | Visit 12- (Month 36); n=4 | StudyConclusion/Withdrawal; n=28 | Follow-Up Visit; n=5 |
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RTG IR | -0.03 | -0.06 | -0.03 | 0.01 | 0.05 | 0.04 | 0.04 | 0.19 | 0.22 | 0.17 | 0.41 | 0.45 | 0.13 | 0.16 |
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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
Intervention | Percentage of width (Mean) |
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| Visit 1- Day 1; n=30 | Visit 2 - Month 1; n=28 | Visit 3 - Month 3; n=26 | Visit 4 - Month 6; n=18 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7 - (Month 16); n=14 | Visit 8 - (Month 20); n=12 | Visit 9 - (Month 24); n=11 | Visit 10 -(Month 28); n=10 | Visit 11- (Month 32); n=9 | Visit 12- (Month 36); n=4 | Study Conclusion/Withdrawal; n=28 | Follow-Up Visit; n=5 |
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RTG IR | 0.31 | 0.43 | 0.18 | -0.33 | -0.03 | 0.01 | 0.13 | -0.33 | -0.01 | 0.35 | -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
Intervention | Ratio (Mean) |
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| Visit 1-Day 1; n=22 | Visit 2 - Month 1; n=19 | Visit 3 - Month 3; n=18 | Visit 4 - Month 6; n=14 | Visit 5 - Month 9; n=12 | Visit 6 - Month 12; n=10 | Visit 7-(Month 16); n=8 | Visit 8 - (Month 20); n=7 | Visit 9 - (Month 24); n=7 | Visit 10-(Month 28); n=6 | Visit 11-(Month 32); n=6 | Visit 12-(Month 36); n=1 | Study Conclusion/Withdrawal;n=17 | Follow-Up Visit; n=5 |
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RTG IR | -0.05 | 0.16 | 1.51 | -0.32 | -0.26 | 9.80 | 0.69 | -0.24 | -0.34 | 0.38 | 0.87 | 0.80 | 0.51 | 3.30 |
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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
Intervention | µmol/L (Mean) |
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| Visit 1-Day 1; n=30 | Visit 2 - Month 1; n=27 | Visit 3 - Month 3; n=25 | Visit 4 - Month 6; n=19 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7-(Month 16); n=14 | Visit 8 - (Month 20); n=12 | Visit 9 - (Month 24); n=11 | Visit 10-(Month 28); n=10 | Visit 11-(Month 32); n=9 | Visit 12-(Month 36); n=3 | Study Conclusion/Withdrawal;n=27 | Follow-Up Visit; n=5 |
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RTG IR | -1803.3 | -1725.9 | -508.0 | -94.7 | -58.8 | -286.7 | -235.7 | -341.7 | -81.8 | 4940.0 | 2944.4 | 1000.0 | -1781.5 | 7100.0 |
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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
Intervention | Participants (Count of Participants) |
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| Visit 1 Day1, Glucose, 4+or 2 or more g/dL,n=30 | Visit 1 Day 1, RBC, 1-3,n=29 | Visit 1 Day 1, RBC, 3-5, n=29 | Visit 1 Day 1, RBC, 5-10, n=29 | Visit 1 Day 1, RBC, 10-15, n=29 | Visit 1 Day 1, RBC, 15-25, n=29 | Visit 1 Day 1, RBC, 25-50, n=29 | Visit 1 Day 1, RBC, 50-100, n=29 | Visit 1 Day 1, WBC,1-3, n=29 | Visit 1 Day 1, WBC,3-5, n=29 | Visit 1 Day 1, WBC,5-10, n=29 | Visit 1 Day 1, Occult Blood,1+, n=30 | Visit 1 Day 1, Occult Blood,4+, n=30 | Visit 1 Day 1, protein, 1+, n=30 | Visit 2 Month 1, Glucose,1+ or 1/4 g/dL, n=28 | Visit 2 Month 1, Glucose,4+or 2 or more g/dL,n=28 | Visit 2 Month 1, Ketone 1+, n=28 | Visit 2 Month 1, RBC, 1-3, n=27 | Visit 2 Month 1, RBC, 3-5, n=27 | Visit 2 Month 1, RBC, 5-10, n=27 | Visit 2 Month 1, RBC, 10-15, n=27 | Visit 2 Month 1, RBC, 15-25, n=27 | Visit 2 Month 1, RBC, 50-100, n=27 | Visit 2 Month 1,WBC,1-3, n=27 | Visit 2 Month 1, WBC,3-5, n=27 | Visit 2 Month 1, Occult Blood,1+, n=28 | Visit 2 Month 1, protein, 1+, n=28 | Visit 3 Month 3, Ketones,1+, n=26 | Visit 3 Month 3, RBC, 1-3, n=26 | Visit 3 Month 3, RBC, 3-5, n=26 | Visit 3 Month 3, RBC, 5-10, n=26 | Visit 3 Month 3, RBC, 10-15, n=26 | Visit 3 Month 3, RBC, 15-25, n=26 | Visit 3 Month 3, RBC, 25-50, n=26 | Visit 3 Month 3, RBC,innumerable, n=26 | Visit 3 Month 3, WBC,1-3, n=26 | Visit 3 Month 3, WBC,15-25, n=26 | Visit 3 Month 3, WBC,innumerable, n=26 | Visit 3 Month 3, Occult Blood,1+, n=26 | Visit 3 Month 3, Occult Blood,4+, n=26 | Visit 3 Month 3, protein, 1+, n=26 | Visit 4 Month 6, Glucose,3+ or 1 g/dL, n=19 | Visit 4 Month 6, RBC, 1-3, n=19 | Visit 4 Month 6, RBC, 3-5, n=19 | Visit 4 Month 6, RBC, 5-10, n=19 | Visit 4 Month 6 RBC, 10-15,n=19 | Visit 4 Month 6, RBC, 15-25, n=19 | Visit 4 Month 6, RBC, 25-50, n=19 | Visit 4 Month 6, RBC, 50-100, n=19 | Visit 4 Month 6, WBC,1-3, n=19 | Visit 4 Month 6, WBC,3-5, n=19 | Visit 4 Month 6, Occult Blood,1+, n=19 | Visit 4 Month 6, protein, 1+,n=19 | Visit 5 Month 9, Glucose,2+ or 1/2 g/dL, n=17 | Visit 5 Month 9, Glucose,3+ or 1 g/dL, n=17 | Visit 5 Month 9, RBC, 1-3, n=17 | Visit 5 Month 9, RBC, 3-5, n=17 | Visit 5 Month 9, RBC, 5-10, n=17 | Visit 5 Month 9, RBC, 10-15, n=17 | Visit 5 Month 9, RBC, 15-25, n=17 | Visit 5 Month 9, RBC, 25-50, n=17 | Visit 5 Month 9, RBC, innumerable, n=17 | Visit 5 Month 9, WBC,1-3, n=17 | Visit 5 Month 9, WBC,15-25, n=17 | Visit 5 Month 9, WBC, innumerable, n=17 | Visit 5 Month 9,Occult Blood,1+, n=17 | Visit 5 Month 9, Occult Blood,4+, n=17 | Visit 5 Month 9, protein, 1+, n=17 | Visit 6 Month 12, RBC, 1-3, n= 15 | Visit 6 Month 12, RBC, 3-5, n= 15 | Visit 6 Month 12, RBC, 5-10, n= 15 | Visit 6 Month 12, RBC, 10-15, n= 15 | Visit 6 Month 12, RBC, 15-25, n= 15 | Visit 6, Month 12, WBC, 1-3, n= 15 | Visit 6, Month 12, WBC, 3-5, n= 15 | Visit 6, Month 12, Occult blood, 1+, n= 15 | Visit 6, Month 12, Protein, 1+, n= 15 | Visit 6, Month 12, Protein, 2+, n= 15 | Visit 7,Month16,Glucose, 4+ or 2 or more g/dL,n=14 | Visit 7, Month 16, Ketone, 1+, n= 14 | Visit 7, Month 16, RBC, 1-3, n= 13 | Visit 7, Month 16, RBC, 3-5, n= 13 | Visit 7, Month 16, RBC, 5-10, n= 13 | Visit 7, Month 16, RBC, 10-15, n= 13 | Visit 7, Month 16, RBC, 25-50, n= 13 | Visit 7, Month 16, WBC, 1-3, n= 13 | Visit 7, Month 16, WBC, 3-5, n= 13 | Visit 7, Month 16, Occult blood, 1+, n= 14 | Visit 7, Month 16, Occult blood, 4+, n= 14 | Visit 7, Month 16, Protein, 1+, n= 14 | Visit 8, Month 20, RBC, 1-3, n= 12 | Visit 8, Month 20, RBC, 3-5, n= 12 | Visit 8, Month 20, RBC, 10-15, n= 12 | Visit 8, Month 20, RBC, 15-25, n= 12 | Visit 8, Month 20, RBC, 25-50, n= 12 | Visit 8, Month 20, WBC, 1-3, n= 12 | Visit 8, Month 20, WBC, 3-5, n= 12 | Visit 8, Month 20, Occult blood, 1+, n= 12 | Visit 9,Month24,Glucose,4+ or 2 or more g/dL,n=11 | Visit 9, Month 24, RBC, 1-3, n= 11 | Visit 9, Month 24, RBC, 3-5, n= 11 | Visit 9, Month 24, RBC, 5-10, n= 11 | Visit 9, Month 24, RBC, 10-15, n= 11 | Visit 9, Month 24, RBC, 50-100, n= 11 | Visit 9, Month 24, WBC, 3-5, n= 11 | Visit 9, Month 24, WBC, Innumerable, n= 11 | Visit 9, Month 24, Occult blood, 1+, n= 11 | Visit 9, Month 24, Occult blood, 4+, n= 11 | Visit 9, Month 24, Protein, 1+, n= 11 | Visit 9, Month 24, Protein, 2+, n= 11 | Visit 10,Month28,Glucose,4+ or 2 or more g/dL,n=10 | Visit 10, Month 28, RBC, 1-3, n= 9 | Visit 10, Month 28, RBC, 3-5, n= 9 | Visit 10, Month 28, RBC, 5-10, n= 9 | Visit 10, Month 28, RBC, 25-50, n= 9 | Visit 10, Month 28, WBC, 1-3, n= 9 | Visit 10, Month 28, Occult blood, 1+, n= 10 | Visit 10, Month 28, Protein, 1+, n= 10 | Visit 11,Month 32,Glucose,4+ or 2 or more g/dL,n=9 | Visit 11, Month 32, RBC, 3-5, n= 9 | Visit 11, Month 32, RBC, 5-10, n= 9 | Visit 11, Month 32, RBC, 10-15, n= 9 | Visit 11, Month 32, RBC, 25-50, n= 9 | Visit 11, Month 32, RBC, 50-100, n= 9 | Visit 11, Month 32, WBC, 1-3, n= 9 | Visit 11, Month 32, WBC, 10-15, n= 9 | Visit 11, Month 32, WBC, innumerable, n= 9 | Visit 11, Month 32, Occult blood, 1+, n= 9 | Visit 11, Month 32, Occult blood, 2+, n= 9 | Visit 11, Month 32, Occult blood, 4+, n= 9 | Visit 12,Month 36,Glucose,4+ or 2 or more g/dL,n=4 | Visit 12, Month 36, RBC, 3-5, n= 4 | Visit 12, Month 36, RBC, 5-10, n= 4 | Visit 12, Month 36, Occult blood, 1+, n= 4 | Study conclusion/Withdrawal,Glucose,3+or1g/dL,n=28 | Study conclusion/Withdrawal,Glucose,4+or2g/dL,n=28 | Study conclusion/Withdrawal, Ketones, trace, n= 28 | Study conclusion/Withdrawal, RBC, 1-3, n= 28 | Study conclusion/Withdrawal, RBC, 3-5, n= 28 | Study conclusion/Withdrawal, RBC, 5-10, n= 28 | Study conclusion/Withdrawal, RBC, 10-15, n= 28 | Study conclusion/Withdrawal, RBC, 15-25, n= 28 | Study conclusion/Withdrawal, RBC, 25-50, n= 28 | Study conclusion/Withdrawal, WBC, 1-3, n= 28 | Study conclusion/Withdrawal, WBC, 3-5, n= 28 | Study conclusion/Withdrawal, WBC, 5-10, n= 28 | Study conclusion/Withdrawal, WBC 10-15, n= 28 | Study conclusion/Withdrawal, WBC 15-25, n= 28 | Study conclusion/Withdrawal, Occult blood,1+ n= 28 | Study conclusion/Withdrawal, Occult blood,2+ n= 28 | Study conclusion/Withdrawal, Occult blood,4+ n= 28 | Study conclusion/Withdrawal, Protein, trace, n= 28 | Study conclusion/Withdrawal, Protein, 1+, n= 28 | Follow up, Ketones, trace, n= 5 | Follow up, RBC, 1-3, n= 5 | Follow up, RBC, 5-10, n= 5 | Follow up, WBC, 1-3, n= 5 | Follow up, WBC, 10-15, n= 5 | Follow up, Protein, 1+, n= 5 |
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RTG IR | 2 | 4 | 4 | 6 | 1 | 6 | 2 | 1 | 3 | 1 | 2 | 1 | 1 | 5 | 1 | 1 | 1 | 7 | 4 | 4 | 4 | 1 | 1 | 5 | 1 | 1 | 5 | 1 | 5 | 3 | 6 | 3 | 2 | 2 | 1 | 4 | 3 | 1 | 3 | 1 | 6 | 2 | 5 | 3 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 5 | 3 | 3 | 1 | 1 | 1 | 4 | 1 | 1 | 1 | 2 | 1 | 4 | 3 | 5 | 2 | 1 | 5 | 2 | 4 | 2 | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 3 | 3 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | 1 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 5 | 2 | 7 | 4 | 2 | 2 | 4 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 5 | 1 | 1 | 2 | 3 | 1 | 1 |
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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
Intervention | Participants (Count of Participants) |
---|
| Body weight;increase by >=7 percent | Body weight; decrease by >=7 percent |
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RTG IR | 11 | 4 |
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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
Intervention | Participants (Count of Participants) |
---|
| HR <50 bpm, decreased from Baseline>=15 bpm | HR >100 bpm, increased from Baseline >=15 bpm | PR interval >=210 msec, increased from Baseline | QRS interval >=120 msec, increased from Baseline | QTcB:Post-Baseline QTc>=450, Baseline<450 msec | QTcB:Post-Baseline QTc>=480, Baseline < 480 msec | QTcB:Post-Baseline QTc>500 msec | QTcB:Post-Baseline QTc>=500, Baseline <500msec | QTcB:Increase in QTc of >30 msec from Baseline | QTcB:Increase in QTc of >30,<=60 msecfrom Baseline | QTcB:Increase in QTc of >60 msec from Baseline | QTcF:Post-Baseline QTc>=450, Baseline<450 msec | QTcF:Post-Baseline QTc>=480, Baseline<480 msec | QTcF: Post-Baseline QTc>500 msec | QTcF:Post-Baseline QTc>=500, Baseline<500 msec | QTcF:Increase in QTc of >30 msec from Baseline | QTcF:Increase in QTcof >30,<=60 msec from Baseline | QTcF:Increase in QTc of >60 msec from Baseline |
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RTG IR | 1 | 0 | 1 | 0 | 5 | 0 | 0 | 0 | 3 | 3 | 0 | 1 | 0 | 0 | 0 | 3 | 3 | 0 |
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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
Intervention | Participants (Count of Participants) |
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| DBP; increase by >=20 | DBP; decrease by >=20 | SBP; increase by >=15 | SBP; decrease by >=15 | HR; increase by >=15 | HR; decrease by >=15 |
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RTG IR | 4 | 9 | 5 | 5 | 9 | 5 |
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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
Intervention | Participants (Count of Participants) |
---|
| Retinal pigmentary abnormality | Non-retinal ocular pigmentary abnormality |
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RTG in SFUCP | 0 | 0 |
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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
Intervention | Participants (Count of Participants) |
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| Suicidal ideation | Suicidal behavior |
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RTG IR | 1 | 0 |
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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
Intervention | Participants (Count of Participants) |
---|
| Any non-SAE | Any SAE |
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RTG IR | 23 | 5 |
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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
Intervention | Scores on a scale (Mean) |
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| Visit 1-Day 1; n=30 | Visit 2 - Month 1; n=28 | Visit 3 - Month 3; n=26 | Visit 4 - Month 6; n=19 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7-(Month 16); n=14 | Visit 8 - (Month 20); n=12 | Visit 9 - (Month 24); n=11 | Visit 10-(Month 28); n=10 | Visit 11-(Month 32); n=9 | Visit 12-(Month 36); n=4 | Study Conclusion/Withdrawal;n=28 | Follow-Up Visit; n=5 |
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RTG IR | 6.68 | 6.48 | 6.35 | 6.39 | 6.74 | 6.40 | 6.54 | 6.71 | 6.86 | 6.80 | 6.78 | 6.88 | 6.52 | 6.10 |
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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
Intervention | Kilograms per meter^3 (Kg/m^3) (Mean) |
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| Visit 1-Day 1; n=30 | Visit 2 - Month 1; n=28 | Visit 3 - Month 3; n=26 | Visit 4 - Month 6; n=19 | Visit 5 - Month 9; n=17 | Visit 6 - Month 12; n=15 | Visit 7-(Month 16); n=14 | Visit 8 - (Month 20); n=12 | Visit 9 - (Month 24); n=11 | Visit 10-(Month 28); n=10 | Visit 11-(Month 32); n=9 | Visit 12-(Month 36); n=4 | Study Conclusion/Withdrawal;n=28 | Follow-Up Visit; n=5 |
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RTG IR | 1.0160 | 1.0157 | 1.0187 | 1.0161 | 1.0153 | 1.0157 | 1.0146 | 1.0158 | 1.0145 | 1.0140 | 1.0139 | 1.0150 | 1.0166 | 1.0198 |
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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
Intervention | Scores on a scale (Mean) |
---|
| Visit 1-Day 1; n=29 | Visit 2-Month 1; n=28 | Visit 3 - Month 3; n=25 | Visit 6 - Month 12; n=15 | Visit 7-(Month 16); n=1 | Visit 9 - (Month 24); n=10 | Visit 12-(Month 36); n=4 | Visit 13 (Month 40); n=1 | Study Conclusion/Withdrawal;n=29 | Follow-Up Visit; n=5 |
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Retigabine IR | -0.5 | 0.3 | -0.3 | -0.7 | -2.0 | -0.1 | 3.0 | 0.0 | 1.1 | 1.2 |
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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
Intervention | Participants (Count of Participants) |
---|
RTG in SFUCP | 0 |
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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
Intervention | Percent 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
Intervention | Percentage of participants (Number) |
---|
RTG IR | 16 |
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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
Intervention | Percentage of participants (Number) |
---|
RTG IR | 21 |
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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
Intervention | Percentage of participants (Number) |
---|
RTG IR | 0 |
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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
Intervention | Percentage of participants (Number) |
---|
RTG IR | 32 |
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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
Intervention | Percentage of participants (Number) |
---|
RTG IR | 18 |
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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
Intervention | Percentage of Participants (Number) |
---|
RTG IR | 17 |
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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
Intervention | Percentage of responders (Number) |
---|
RTG IR | 23 |
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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
Intervention | units on a scale (Mean) |
---|
Ezogabine | 0.278 |
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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
Intervention | events (Number) |
---|
Ezogabine | 105 |
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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)
Intervention | z-score (Mean) |
---|
| VTA in response to reward cue | VTA in response to reward receipt | VS in response to reward cue | VS in response to reward receipt |
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Ezogabine | -0.043 | -0.021 | -0.031 | 0.013 |
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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)
Intervention | units on a scale (Mean) |
---|
| Baseline | 10 weeks |
---|
Ezogabine | 29.50 | 15.83 |
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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
Intervention | Participants (Count of Participants) |
---|
Oral Ezogabine 900 mg/Day | 14 |
Oral Ezogabine 600 mg/Day | 11 |
Placebo | 23 |
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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
Intervention | kilograms (kg) (Mean) |
---|
| Screening | Baseline | Week 4 | Week 6 | Week 8 | Week 12 |
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Oral Ezogabine 600 mg/Day | 8.577 | 6.641 | 7.333 | 6.921 | 5.633 | 5.439 |
,Oral Ezogabine 900 mg/Day | 6.721 | 6.584 | 6.461 | 6.838 | 7.015 | 5.887 |
,Placebo | 7.448 | 7.164 | 6.686 | 6.300 | 6.523 | 5.643 |
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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
Intervention | Proportion of Days (Mean) |
---|
| Week 1 | Week 2 | Week 3 | Week 4 | Week 5 | Week 6 | Week 7 | Week 8 | Week 9 | Week 10 |
---|
Oral Ezogabine 600 mg/Day | 0.659 | 0.637 | 0.648 | 0.637 | 0.659 | 0.714 | 0.767 | 0.688 | 0.657 | 0.700 |
,Oral Ezogabine 900 mg/Day | 0.918 | 0.918 | 0.796 | 0.752 | 0.879 | 0.868 | 0.912 | 0.868 | 0.893 | 0.869 |
,Placebo | 0.745 | 0.776 | 0.816 | 0.806 | 0.733 | 0.765 | 0.786 | 0.714 | 0.857 | 0.813 |
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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
Intervention | Days (Mean) |
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| Week 1 | Week 2 | Week 3 | Week 4 | Week 5 | Week 6 | Week 7 | Week 8 | Week 9 | Week 10 |
---|
Oral Ezogabine 600 mg/Day | 8.738 | 7.083 | 7.750 | 9.135 | 10.265 | 8.333 | 9.714 | 9.067 | 9.933 | 10.188 |
,Oral Ezogabine 900 mg/Day | 12.176 | 9.235 | 10.906 | 12.018 | 12.533 | 11.033 | 9.400 | 11.211 | 12.786 | 13.179 |
,Placebo | 9.536 | 8.273 | 10.170 | 106.19 | 8.955 | 8.539 | 9.609 | 9.282 | 11.190 | 13.600 |
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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
Intervention | Milliseconds (Mean) |
---|
| Screening | Baseline | Week 6 | Week 8 |
---|
Oral Ezogabine 600 mg/Day | 0.451 | 0.454 | 0.480 | 0.461 |
,Oral Ezogabine 900 mg/Day | 0.521 | 0.522 | 0.416 | 0.341 |
,Placebo | 0.505 | 0.488 | 0.546 | 0.497 |
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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
Intervention | Unitless (Mean) |
---|
| Screening | Baseline | Week 6 | Week 8 |
---|
Oral Ezogabine 600 mg/Day | 0.965 | 0.952 | 0.675 | 0.617 |
,Oral Ezogabine 900 mg/Day | 1.180 | 1.347 | 1.100 | 0.948 |
,Placebo | 0.784 | 0.755 | 0.777 | 0.834 |
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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
Intervention | percentage of the maximum output (Mean) |
---|
| Screening | Baseline | Week 6 | Week 8 |
---|
Oral Ezogabine 600 mg/Day | 52.000 | 54.250 | 57.583 | 56.700 |
,Oral Ezogabine 900 mg/Day | 51.250 | 48.385 | 50.111 | 46.00 |
,Placebo | 56.308 | 57.231 | 54.714 | 55.357 |
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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
Intervention | percentage of threshold (Mean) |
---|
| Screening | Baseline | Week 6 | Week 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
Intervention | Millivolts (Geometric Mean) |
---|
| Screening | Baseline | Week 6 | Week 8 |
---|
Oral Ezogabine 600 mg/Day | 1.210 | 0.954 | 0.914 | 1.129 |
,Oral Ezogabine 900 mg/Day | 0.639 | 0.395 | 1.78 | 0.571 |
,Placebo | 0.845 | 1.098 | 0.454 | 0.450 |
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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
Intervention | Unitless (Geometric Mean) |
---|
| Screening | Baseline | Week 6 | Week 8 |
---|
Oral Ezogabine 600 mg/Day | 1.849 | 2.073 | 1.535 | 1.466 |
,Oral Ezogabine 900 mg/Day | 1.829 | 2.420 | 1.894 | 1.779 |
,Placebo | 1.653 | 1.531 | 1.571 | 1.514 |
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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
Intervention | Milliseconds (Mean) |
---|
| Screening | Baseline | Week 6 | Week 8 |
---|
Oral Ezogabine 600 mg/Day | 69.273 | 76.006 | 74.917 | 58.870 |
,Oral Ezogabine 900 mg/Day | 99.542 | 80.223 | 96.844 | 88.000 |
,Placebo | 88.831 | 80.638 | 83.479 | 87.479 |
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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
Intervention | percentage of threshold (Mean) |
---|
| Screening | Baseline | Week 6 | Week 8 |
---|
Oral Ezogabine 600 mg/Day | 48.144 | 48.901 | 51.857 | 48.552 |
,Oral Ezogabine 900 mg/Day | 52.275 | 46.278 | 50.187 | 50.108 |
,Placebo | 44.532 | 46.574 | 44.898 | 47.010 |
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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
Intervention | score on a scale (Mean) |
---|
| baseline | 5 weeks |
---|
Ezogabine | 4.4 | 2.6 |
,Placebo | 4.6 | 3.3 |
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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
Intervention | score on a scale (Mean) |
---|
| baseline | 5 weeks |
---|
Ezogabine | 28.3 | 12.7 |
,Placebo | 26.8 | 18.5 |
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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
Intervention | score on a scale (Mean) |
---|
| baseline | 5 weeks |
---|
Ezogabine | 32.3 | 16.3 |
,Placebo | 28.8 | 21.5 |
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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
Intervention | score on a scale (Mean) |
---|
| TEPS-ANT baseline | TEPS-ANT 5 weeks | TEPS-CON baseline | TEPS-CON 5 weeks |
---|
Ezogabine | 26.3 | 37.3 | 24.8 | 32.2 |
,Placebo | 28.6 | 32.4 | 25.6 | 29.9 |
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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
Intervention | score on a scale (Mean) |
---|
| baseline | 5 weeks |
---|
Ezogabine | 15.5 | 10.2 |
,Placebo | 16.5 | 11.6 |
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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
Intervention | score on a scale (Mean) |
---|
| baseline | 5 weeks |
---|
Ezogabine | 46.1 | 65.1 |
,Placebo | 53.7 | 59 |
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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
Intervention | score on a scale (Mean) |
---|
| Baseline | 5 weeks |
---|
Ezogabine | 38.7 | 27.5 |
,Placebo | 33.7 | 30 |
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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
Intervention | Bold Oxygen-level Dependent (BOLD) Signa (Mean) |
---|
| baseline | 5 weeks |
---|
Ezogabine | -0.26 | 0.176 |
,Placebo | 0.95 | 0.015 |
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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
Intervention | score on a scale (Mean) |
---|
| baseline | 5 weeks |
---|
Ezogabine | 4 | 2.1 |
,Placebo | 4 | 2.8 |
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