Page last updated: 2024-10-25

clioquinol and Huntington Disease

clioquinol has been researched along with Huntington Disease in 6 studies

Clioquinol: A potentially neurotoxic 8-hydroxyquinoline derivative long used as a topical anti-infective, intestinal antiamebic, and vaginal trichomonacide. The oral preparation has been shown to cause subacute myelo-optic neuropathy and has been banned worldwide.
5-chloro-7-iodoquinolin-8-ol : A monohydroxyquinoline that is quinolin-8-ol in which the hydrogens at positions 5 and 7 are replaced by chlorine and iodine, respectively. It has antibacterial and atifungal properties, and is used in creams for the treatment of skin infections. It has also been investigated as a chelator of copper and zinc ions for the possible treatment of Alzheimer's disease.

Huntington Disease: A familial disorder inherited as an autosomal dominant trait and characterized by the onset of progressive CHOREA and DEMENTIA in the fourth or fifth decade of life. Common initial manifestations include paranoia; poor impulse control; DEPRESSION; HALLUCINATIONS; and DELUSIONS. Eventually intellectual impairment; loss of fine motor control; ATHETOSIS; and diffuse chorea involving axial and limb musculature develops, leading to a vegetative state within 10-15 years of disease onset. The juvenile variant has a more fulminant course including SEIZURES; ATAXIA; dementia; and chorea. (From Adams et al., Principles of Neurology, 6th ed, pp1060-4)

Research Excerpts

ExcerptRelevanceReference
" Six serious adverse events (acute coronary syndrome, major depression, pneumonia, suicide attempt, viral infection, and worsening of Huntington's disease) occurred in five participants in the PBT2 250 mg group, three (fall with subdural haematoma, suicide attempt, and hospital admission for stabilisation of Huntington's disease) occurred in two participants in the PBT2 100 mg group, and one (increasing aggression) occurred in a participant in the placebo group."2.80Safety, tolerability, and efficacy of PBT2 in Huntington's disease: a phase 2, randomised, double-blind, placebo-controlled trial. ( , 2015)
"Clioquinol treatment of transgenic Huntington's mice (R6/2) improved behavioral and pathologic phenotypes, including decreased huntingtin aggregate accumulation, decreased striatal atrophy, improved rotarod performance, reduction of weight loss, normalization of blood glucose and insulin levels, and extension of lifespan."1.33Clioquinol down-regulates mutant huntingtin expression in vitro and mitigates pathology in a Huntington's disease mouse model. ( Hamby, A; Massa, SM; Nguyen, T, 2005)

Research

Studies (6)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's0 (0.00)18.2507
2000's3 (50.00)29.6817
2010's3 (50.00)24.3611
2020's0 (0.00)2.80

Authors

AuthorsStudies
Cherny, RA1
Ayton, S1
Finkelstein, DI1
Bush, AI1
McColl, G1
Massa, SM2
Langbehn, DR1
Nguyen, T1
Hamby, A1
Ashraf, H1
Ferrada, E1
Arancibia, V1
Loeb, B1
Norambuena, E1
Olea-Azar, C1
Huidobro-Toro, JP1

Clinical Trials (1)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
A Randomized, Double-blind, Placebo-controlled Study to Assess the Safety and Tolerability, and Efficacy of PBT2 in Patients With Early to Mid-stage Huntington Disease[NCT01590888]Phase 2109 participants (Actual)Interventional2012-04-30Completed
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

Change From Baseline in Behaviour

Total Behavioural score from the Unified Huntington Disease Rating Scale. The behavioural assessment measures the frequency and severity of symptoms related to affect, thought content and coping styles. The total behaviour score is the sum of all responses, with scale range of 0 to 8. Higher scores on the behaviour assessments indicate more severe disturbance than lower scores. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionunits on a scale (Mean)
PBT2 250mg-2.3
PBT2 100mg3.0
Sugar Pill0.7

Change From Baseline in Blood Biomarkers

Biomarkers assessed primarily with mutant huntingtin protein, normalised to lysate protein concentrations, as a change from baseline. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionratio (Mean)
PBT2 250mg1.97
PBT2 100mg0.14
Sugar Pill-1.72

Change From Baseline in Blood Biomarkers

Biomarkers assessed primarily with soluble huntingtin protein, normalised to lysate protein concentrations, as a change from baseline. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionmg/mL (Mean)
PBT2 250mg-3.18
PBT2 100mg-2.09
Sugar Pill-3.07

Change From Baseline in Blood Biomarkers - Selenium

Biomarkers assessed primarily with plasma selenium as a change from baseline. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionug/L (Mean)
PBT2 250mg1.3
PBT2 100mg-6.3
Sugar Pill2.0

Change From Baseline in Brain Function (MRI)

Measure of the structural brain volume as assessed by the left caudate volume. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionmm^3 (Mean)
PBT2 250mg50.0
PBT2 100mg27.5
Sugar Pill-170.5

Change From Baseline in Brain Function (MRI)

Measure of whole brain iron concentrations. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionmm^3 (Mean)
PBT2 250mg0.0029
PBT2 100mg0.0067
Sugar Pill0.0098

Change From Baseline in Cognitive Test Battery - TMT Part B

"Trail Making Test Part B was assessed by the number of seconds to complete the test (from 0 to 240 seconds).~The Trails Making Test Part B actual change from baseline at Week 26 was analysed." (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionseconds (Mean)
PBT2 250mg-6.3
PBT2 100mg12.8
Sugar Pill8.9

Change From Baseline in Functional Abilities

"Total Functional Capacity (TFC) assessment was based on an individual's ability to perform common daily tasks. TFC score range was 0 to 13.~Higher scores on the function scales indicate better functioning than lower scores." (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionunits on a scale (Mean)
PBT2 250mg1.1
PBT2 100mg1.3
Sugar Pill1.3

Change From Baseline in Investigator Global Assessments by Efficacy Index

Global function was assessed by the Investigator using the clinical global impression (CGI) scale which included assessing the severity of illness and global improvement and calculating the efficacy index for each participant. The efficacy index aims to relate therapeutic effects to reported side effects as assessed by the Investigator (range from 0 [marked improvement and no side effects] to 4 [unchanged or worse] and side effects outweigh therapeutic effects) and is calculated for each participant by dividing the therapeutic effect score by the side effects score. An improvement is reflected by CGI scale Efficacy Index values >1. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionratio (Mean)
PBT2 250mg1.313
PBT2 100mg1.276
Sugar Pill1.176

Change From Baseline in Motor Function

Total motor score calculated from the Unified Huntington Disease Rating Scale - Motor Function. The motor section of the UHDRS assesses motor features of HD with standardized ratings of oculomotor function, dysarthria, chorea, dystonia, gait, and postural stability. The total motor impairment scores is the sum of all the individual motor ratings, with higher scores indicating more severe motor impairment than lower scores. A maximum score of 60 is possible (range 0-60). (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionunits on a scale (Mean)
PBT2 250mg-0.7
PBT2 100mg1.3
Sugar Pill-1.3

Change From Baseline in Urine Biomarkers

Biomarkers assessed primarily with 8-hydroxy-2'-deoxyguanosine, normalised to creatinine concentrations, as a change from baseline. (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionng/mL (Mean)
PBT2 250mg-0.4258
PBT2 100mg0.0832
Sugar Pill35.5302

Safety and Tolerability of PBT2 in Patients With HD

As measured by the total number of participants in each dose group who reported at least one adverse events during the study, (NCT01590888)
Timeframe: Baseline to 26 weeks

Interventionparticipants (Number)
PBT2 250mg32
PBT2 100mg30
Sugar Pill28

Change From Baseline in Cognitive Test Battery - Composite z Scores

Cognition composite z-scores were calculated for each participant. The composite scores were defined as the mean of the individual z-scores for the various cognition assessments. The Main Composite z-score was calculated for Category Fluency Test, Trail Making Test Part B, Map Search, Symbol Digit Modalities Test and Stroop Word Reading Test. The Exploratory Composite z-score was calculated for Category Fluency Test, Trail Making Test Part B, Map Search, Symbol Digit Modalities Test, Stroop Word Reading Test and Speeded Tapping test. The Executive Function Composite z-score was calculated from Category Fluency Test and Trail Making Test Part B. There is no unit of measure for the z score as it is the pure number calculated from the SD from the mean. A higher z score indicates an improvement. (NCT01590888)
Timeframe: Baseline to 26 weeks

,,
Interventionz score (Mean)
Main Composite z-scoreExploratory Composite z-scoreExecutive Function z-score
PBT2 100mg-0.0413-0.0287-0.1026
PBT2 250mg0.05920.05300.2274
Sugar Pill-0.0194-0.01440.0553

Trials

1 trial available for clioquinol and Huntington Disease

ArticleYear
Safety, tolerability, and efficacy of PBT2 in Huntington's disease: a phase 2, randomised, double-blind, placebo-controlled trial.
    The Lancet. Neurology, 2015, Volume: 14, Issue:1

    Topics: Adult; Biomarkers; Clioquinol; Cognition Disorders; Double-Blind Method; Female; Humans; Huntington

2015

Other Studies

5 other studies available for clioquinol and Huntington Disease

ArticleYear
PBT2 Reduces Toxicity in a C. elegans Model of polyQ Aggregation and Extends Lifespan, Reduces Striatal Atrophy and Improves Motor Performance in the R6/2 Mouse Model of Huntington's Disease.
    Journal of Huntington's disease, 2012, Volume: 1, Issue:2

    Topics: Animals; Atrophy; Caenorhabditis elegans; Clioquinol; Corpus Striatum; Disease Susceptibility; Dose-

2012
Criteria for success in safety and tolerability trials.
    The Lancet. Neurology, 2015, Volume: 14, Issue:1

    Topics: Clioquinol; Cognition Disorders; Female; Humans; Huntington Disease; Male

2015
Clioquinol down-regulates mutant huntingtin expression in vitro and mitigates pathology in a Huntington's disease mouse model.
    Proceedings of the National Academy of Sciences of the United States of America, 2005, Aug-16, Volume: 102, Issue:33

    Topics: Animals; Behavior, Animal; Blood Glucose; Body Weight; Cell Death; Cell Line; Clioquinol; Disease Mo

2005
Hope for Huntington's from an old antibiotic.
    Drug discovery today, 2005, Volume: 10, Issue:23-24

    Topics: Animals; Anti-Infective Agents, Local; Brain; Clioquinol; Humans; Huntingtin Protein; Huntington Dis

2005
Stoichiometry and conditional stability constants of Cu(II) or Zn(II) clioquinol complexes; implications for Alzheimer's and Huntington's disease therapy.
    Neurotoxicology, 2007, Volume: 28, Issue:3

    Topics: Adenosine Triphosphate; Algorithms; Alzheimer Disease; Animals; Chemical Phenomena; Chemistry, Physi

2007