E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Epileptic Encephalopathies: Dravet Syndrome, Lennox Gastaut Syndrome, CDKL5 Deficiency Disorder, and Chromosome 15 Duplication Syndrome |
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E.1.1.1 | Medical condition in easily understood language |
Epileptic Encephalopathies: Dravet Syndrome, Lennox Gastaut Syndrome, CDKL5 Deficiency Disorder, and Chromosome 15 Duplication Syndrome |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10073682 |
E.1.2 | Term | Dravet syndrome |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10048816 |
E.1.2 | Term | Lennox-Gastaut syndrome |
E.1.2 | System Organ Class | 10029205 - Nervous system disorders |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 22.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10083005 |
E.1.2 | Term | CDKL5 deficiency disorder |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 23.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10083952 |
E.1.2 | Term | Dup15q syndrome |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective of this study is to investigate the effect of TAK-935 on the frequency of motor seizures for patients with Dup15q or CDD during the Maintenance Period. |
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E.2.2 | Secondary objectives of the trial |
- To investigate the effect of TAK-935 on frequency of motor seizures for patients with Dup15q or CDD during the Treatment Period (Dose Optimization and Maintenance) - To investigate the proportion of patients considered as treatment responders for patients with Dup15q or CDD throughout the Maintenance Period; treatment responders are defined as those with: Reduction of 25, 50, 75, or 100% in motor seizures from baseline - To investigate the effect of TAK-935 on the frequency of motor seizures lasting > 5 minutes for patients with CDD throughout the Treatment Period - To investigate the effect of TAK-935 on the percent/frequency of seizure free days in patients with Dup15q or CDD during the Maintenance Period - To assess Clinical Global Impression of severity (CGI-S) and the Clinical Global Impression of change (CGI-C) provided by the Investigator, the Caregiver Global Impression of Change (Care GI-C) - To investigate the relationship between 24HC level and motor seizure frequency |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Clinical diagnosis of Dup 15q or CDKL5 deficiency disorder. 2. Currently taking 1 to 6 antiepileptic drugs (AEDs) at a stable dose. |
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E.4 | Principal exclusion criteria |
1. Two or more episodes of convulsive status epilepticus per 3 months requiring hospitalization and intubation. 2. Currently receiving a study drug or participated in a clinical study involving another investigational product in the previous month. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Percent change from Baseline in motor seizure frequency per 28 days during the Maintenance Period |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Maintenance Period: Weeks 9 to 20 |
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E.5.2 | Secondary end point(s) |
- Percent Change From Baseline in Motor Seizure Frequency Per 28 Days During the Treatment Period - Percentage of Participants Considered as Treatment Responders During the Maintenance Period - Percent Change From Baseline in Frequency of Motor Seizures Longer Than 5 Minutes in Participants With CDD - Proportion of Motor Seizure-free Days in Participants During the Maintenance Period - Change From Baseline in Clinician's Global Impression of Severity (CGI-S) Responses of Investigator - Percentage of Participants With Clinical Global Impression of Change (CGI-C) Responses as Per the Investigator Reported Impression - Percentage of Participants With Care Clinical Global Impression of Change (CGI-C) Responses of Parent/Family - Change From Baseline of Plasma 24S-hydroxycholesterol (24HC) Levels - Change From Baseline in Seizure Frequency in Participants Treated With TAK-935 as an Adjunctive Therapy |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Secondary end points will be assessed throughout the study, Weeks 0 to 20 |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 1 |
E.8.3 |
Will this trial be conducted at a single site globally?
| No |
E.8.4 | Will this trial be conducted at multiple sites globally? | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | Specify the countries outside of the EEA in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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It has been defined as the last subject last visit |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.2 | In all countries concerned by the trial years | 2 |