Unverricht-Lundborg Disease
Conditions
Keywords
Unverricht-Lundborg disease, Baltic myoclonus, progressive myoclonic epilepsies, myoclonus, brivaracetam
Brief summary
The study will compare the efficacy and safety of brivaracetam with placebo in patients with Unverricht-Lundborg disease.
Interventions
* Active Substance: Brivaracetam * Pharmaceutical Form: Tablet * Concentration: 25 mg * Route of Administration: Oral use
DRUGBrivaracetam 50 mg
* Active Substance: Brivaracetam * Pharmaceutical Form: Tablet * Concentration: 50 mg * Route of Administration: Oral use
OTHERPlacebo
* Active Substance: Placebo Pharmaceutical Form: Tablet * Concentration: 25 mg and 50 mg * Route of Administration: Oral use
Sponsors
UCB Pharma SA
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
16 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Subjects with diagnosed Unverricht-Lundborg disease (ULD) ascertained by appropriate genetic testing for a homozygous or compound heterozygous mutation in the Cystatin B (CSTB) gene * Subjects with moderate to severe myoclonus documented by an Action Myoclonus sum score of ≥ 30 (evaluation by investigator) * Subjects currently being or having been treated with clonazepam up to the maximum recommended daily dose of 20 mg or up to their individual optimal dose as assessed by the investigator * Subjects currently being or having been treated with valproate up to the maximum recommended daily dose 60 mg/kg or serum levels of 100 mcg/ml or up to their individual optimal dose as specified by the investigator
Exclusion criteria
* Subjects currently on felbamate or having been on felbamate within less than 18 months prior to Visit 1 * Subjects currently treated with phenytoin or having been on phenytoin in the last month prior to Visit 1 * Subjects currently on vigabatrine. Subjects having been on vigabatrine if no visual fields examination report available including standard static (Humphrey or Octopus) or cinetic perimetry (Goldman) * Subject taking any drug with possible central nervous system (CNS) effects * Subjects taking any drug that may significantly influence the metabolism of BRV (CYP2C or CYP3A potent inducers/inhibitors) * Known clinically significant acute or chronic illness or illness which may impair reliable participation in the trial, necessitate the use of medication not allowed by protocol or represent a safety risk in the Investigator's opinion * Subjects with history of severe adverse hematological reaction to any drug * Impaired hepatic function: ALAT/SGPT, ASAT/SGOT, alkaline phosphatase, GGT value of more than three times the upper limit of the reference range * History of suicide attempt during the last 5 years * Subject with suicidal ideations within the last year or at risk of suicide attempt unless cleared by written confirmation from a psychiatrist and approved by the UCB physician * Ongoing psychiatric disorder other than mild controlled disorder
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Percent reduction from baseline on the Action Myoclonus score (Unified Myoclonus Rating Scale (UMRS) Section 4) at the end of the Treatment Period | End of treatment period (Week 14 or early discontinuation visit) |
Secondary
| Measure | Time frame |
|---|---|
| Percent reduction from baseline on the functional disability score (UMRS Section 5) at the end of the Treatment Period | End of treatment period (week 14 or early discontinuation visit) |
| Percent reduction from baseline on the stimulus sensitivity score (UMRS Section 3) at the end of the Treatment Period | End of treatment period (week 14 or early discontinuation visit) |
| Percent reduction from baseline on the myoclonus patient questionnaire (UMRS Section 1) at the end of the Treatment Period | End of treatment period (week 14 or early discontinuation visit) |
| Global Evaluation Scale by Investigator (I-GES) at the end of the Treatment Period | End of treatment period (week 14 or early discontinuation visit) |
Countries
Finland, France, Italy, Netherlands, Reunion, Sweden, Tunisia
Outcome results
None listed