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    Summary
    EudraCT Number:2021-002480-22
    Sponsor's Protocol Code Number:TAK-935-3001
    National Competent Authority:Greece - EOF
    Clinical Trial Type:EEA CTA
    Trial Status:Completed
    Date on which this record was first entered in the EudraCT database:2021-08-09
    Trial results
    Index
    A. PROTOCOL INFORMATION
    B. SPONSOR INFORMATION
    C. APPLICANT IDENTIFICATION
    D. IMP IDENTIFICATION
    D.8 INFORMATION ON PLACEBO
    E. GENERAL INFORMATION ON THE TRIAL
    F. POPULATION OF TRIAL SUBJECTS
    G. INVESTIGATOR NETWORKS TO BE INVOLVED IN THE TRIAL
    N. REVIEW BY THE COMPETENT AUTHORITY OR ETHICS COMMITTEE IN THE COUNTRY CONCERNED
    P. END OF TRIAL
    Expand All   Collapse All
    A. Protocol Information
    A.1Member State ConcernedGreece - EOF
    A.2EudraCT number2021-002480-22
    A.3Full title of the trial
    A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study to Evaluate the Efficacy, Safety, and Tolerability of Soticlestat as Adjunctive Therapy in Pediatric and Young Adult Subjects With Dravet Syndrome (DS)
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    Study of Soticlestat as Adjunctive Therapy in Pediatric and Young Adult Subjects With Dravet Syndrome
    A.4.1Sponsor's protocol code numberTAK-935-3001
    A.7Trial is part of a Paediatric Investigation Plan Yes
    A.8EMA Decision number of Paediatric Investigation PlanP/491/2021
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorTakeda Development Center Americas, Inc.
    B.1.3.4CountryUnited States
    B.3.1 and B.3.2Status of the sponsorCommercial
    B.4 Source(s) of Monetary or Material Support for the clinical trial:
    B.4.1Name of organisation providing supportTakeda Development Center Americas, Inc.
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationTakeda Development Center Americas, Inc.
    B.5.2Functional name of contact pointSenior Medical Director
    B.5.3 Address:
    B.5.3.1Street Address95 Hayden Avenue
    B.5.3.2Town/ cityLexington, MA
    B.5.3.3Post code02421
    B.5.3.4CountryUnited States
    B.5.4Telephone number1 857 209 1248
    B.5.6E-mailelena.ratti@takeda.com
    D. IMP Identification
    D.IMP: 1
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product namesoticlestat
    D.3.2Product code TAK-935
    D.3.4Pharmaceutical form Film-coated tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPGastroenteral use
    Oral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNsoticlestat
    D.3.9.1CAS number 1429505-03-2
    D.3.9.2Current sponsor codeTAK-935
    D.3.9.4EV Substance CodeSUB198078
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number100
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.IMP: 2
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product namesoticlestat
    D.3.2Product code TAK-935
    D.3.4Pharmaceutical form Film-coated tablet
    D.3.4.1Specific paediatric formulation Yes
    D.3.7Routes of administration for this IMPGastroenteral use
    Oral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNsoticlestat
    D.3.9.1CAS number 1429505-03-2
    D.3.9.2Current sponsor codeTAK-935
    D.3.9.4EV Substance CodeSUB198078
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number20
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.8 Information on Placebo
    D.8 Placebo: 1
    D.8.1Is a Placebo used in this Trial?Yes
    D.8.3Pharmaceutical form of the placeboFilm-coated tablet
    D.8.4Route of administration of the placeboOral use
    D.8 Placebo: 2
    D.8.1Is a Placebo used in this Trial?Yes
    D.8.3Pharmaceutical form of the placeboFilm-coated tablet
    D.8.4Route of administration of the placeboOral use
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    Dravet Syndrome (DS)
    E.1.1.1Medical condition in easily understood language
    seizures
    E.1.1.2Therapeutic area Diseases [C] - Nervous System Diseases [C10]
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 20.0
    E.1.2Level LLT
    E.1.2Classification code 10073682
    E.1.2Term Dravet syndrome
    E.1.2System Organ Class 100000004850
    E.1.3Condition being studied is a rare disease Yes
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    - To assess the efficacy of soticlestat in reducing convulsive seizure frequency as add-on therapy to SOC as compared with placebo during the full treatment period (titration + maintenance).

    For European Medicines Agency (EMA) registration:
    - To assess the efficacy of soticlestat in reducing convulsive seizure frequency as add-on therapy to SOC compared with placebo during the maintenance period only.
    E.2.2Secondary objectives of the trial
    To assess the following in subjects taking soticlestat as compared with placebo during the full treatment period, unless otherwise noted:
    - Proportion of treatment responders defined as those with ≥50% reduction in convulsive seizures from baseline during the maintenance period and the full treatment period.
    - Effect on total seizure frequency of all seizure types during the maintenance period and the full treatment period.
    - Change from baseline in proportion of convulsive seizure-free days.
    - Longest convulsive seizure-free interval.
    - Number of days when rescue antiseizure medications (ASMs) are used.
    - Effect on the Clinical Global Impression of Improvement (CGI-I) (clinician) and Caregiver Global Impression of Improvement (Care GI-I).
    - Effect on CGI-I Seizure Intensity and Duration.
    - Effect on the CGI-I Nonseizure Symptoms completed by clinician with input from the caregivers.
    - Effect on Quality of Life Inventory-Disability (QI-Disability).
    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    1. Has documented clinical diagnosis of DS.
    2. Had ≥12 convulsive seizures over 12 weeks before screening based on the historical information and has had ≥4 convulsive seizures per 28
    days during the 4- to 6-week prospective baseline period.
    3. Weighs ≥10 kg at the screening visit (Visit 1).
    4. Failure to control seizures despite appropriate trials of at least 1 ASM based on historical information and is currently on an antiseizure
    therapy or other treatment options considered as SOC.
    5. Artisanal cannabidiols are allowed at a stable dose for at least 4 weeks before the screening visit (Visit 1); the dosing regimen and
    manufacturer should remain constant throughout the study (Artisanal cannabidiols will not be counted as ASMs.).
    6. Currently taking 0 to 4 ASMs at stable doses for at least 4 weeks before the screening visit (Visit 1); benzodiazepines used chronically
    (daily) to treat seizures are considered ASMs. Fenfluramine and cannabidiol (Epidiolex) are allowed where available and should be
    counted as an ASM. ASM dosing regimen must remain constant throughout the study.
    E.4Principal exclusion criteria
    1. Unstable, clinically significant neurologic (other than the disease being studied), psychiatric, cardiovascular, ophthalmologic, pulmonary,
    hepatic, renal, metabolic, gastrointestinal, urologic, immunologic, hematopoietic, endocrine disease, malignancy including progressive
    tumors, or other abnormality that may impact the ability to participate in the study or that may potentially confound the study results. It is the
    responsibility of the investigator to assess the clinical significance; however, consultation with the medical monitor may be warranted.
    E.5 End points
    E.5.1Primary end point(s)
    - Percent change from baseline in convulsive seizure frequency per 28 days in subjects receiving soticlestat as compared with placebo during the full treatment period.

    For European Medicines Agency (EMA) registration:
    - Percent change from baseline in convulsive seizure frequency per 28 days in subjects receiving soticlestat as compared with placebo during the maintenance period.
    E.5.1.1Timepoint(s) of evaluation of this end point
    Primary end points will be assessed throughout the study.
    E.5.2Secondary end point(s)
    - Proportion of responders defined as those with ≥50% reduction from baseline in convulsive seizures during the maintenance period and the full treatment period.
    - Responder analysis of the proportion of subjects with ≤0%, >0% to ≤25%, >25% to ≤50%, >50% to ≤75%, and >75% to ≤100% reduction in convulsive seizures in a cumulative response curve.
    - Care GI-I (caregiver).
    - CGI-I (clinician).
    - CGI-I Nonseizure Symptoms.
    - Change in QI-Disability score.
    - CGI-I Seizure Intensity and Duration.
    - Percent change from baseline in frequency of all seizures per 28 days during the maintenance period and the full treatment period.
    - Percent change from baseline in convulsive seizure frequency per 28 days during the maintenance period.
    - Change from baseline in proportion of convulsive seizure-free days.- Longest convulsive seizure-free interval.
    - Number of days when rescue ASM is used.
    E.5.2.1Timepoint(s) of evaluation of this end point
    Secondary end points will be assessed throughout the study.
    E.6 and E.7 Scope of the trial
    E.6Scope of the trial
    E.6.1Diagnosis No
    E.6.2Prophylaxis No
    E.6.3Therapy No
    E.6.4Safety Yes
    E.6.5Efficacy Yes
    E.6.6Pharmacokinetic Yes
    E.6.7Pharmacodynamic Yes
    E.6.8Bioequivalence No
    E.6.9Dose response No
    E.6.10Pharmacogenetic No
    E.6.11Pharmacogenomic No
    E.6.12Pharmacoeconomic No
    E.6.13Others No
    E.7Trial type and phase
    E.7.1Human pharmacology (Phase I) No
    E.7.1.1First administration to humans No
    E.7.1.2Bioequivalence study No
    E.7.1.3Other No
    E.7.1.3.1Other trial type description
    E.7.2Therapeutic exploratory (Phase II) No
    E.7.3Therapeutic confirmatory (Phase III) Yes
    E.7.4Therapeutic use (Phase IV) No
    E.8 Design of the trial
    E.8.1Controlled Yes
    E.8.1.1Randomised Yes
    E.8.1.2Open No
    E.8.1.3Single blind No
    E.8.1.4Double blind Yes
    E.8.1.5Parallel group Yes
    E.8.1.6Cross over No
    E.8.1.7Other No
    E.8.2 Comparator of controlled trial
    E.8.2.1Other medicinal product(s) No
    E.8.2.2Placebo Yes
    E.8.2.3Other No
    E.8.2.4Number of treatment arms in the trial2
    E.8.3 The trial involves single site in the Member State concerned No
    E.8.4 The trial involves multiple sites in the Member State concerned Yes
    E.8.4.1Number of sites anticipated in Member State concerned4
    E.8.5The trial involves multiple Member States Yes
    E.8.5.1Number of sites anticipated in the EEA24
    E.8.6 Trial involving sites outside the EEA
    E.8.6.1Trial being conducted both within and outside the EEA Yes
    E.8.6.2Trial being conducted completely outside of the EEA No
    E.8.6.3If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned
    Ukraine
    Australia
    Belgium
    Brazil
    Canada
    China
    France
    Germany
    Greece
    Hungary
    Italy
    Japan
    Latvia
    Mexico
    Netherlands
    Poland
    Russian Federation
    Serbia
    Spain
    United States
    E.8.7Trial has a data monitoring committee Yes
    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
    The end of study for an individual subject who does not enroll in the OLE study on the same day as Visit 11/early termination is either:
    - The day of the scheduled safety follow-up phone call or visit.
    OR
    - Midnight of the day after Visit 11/early termination but before the scheduled safety follow-up phone call.
    The end of study for an individual subject who enrolls in the OLE study on the same day as Visit 11/early termination is midnight of that same day.
    E.8.9 Initial estimate of the duration of the trial
    E.8.9.1In the Member State concerned years2
    E.8.9.1In the Member State concerned months11
    E.8.9.1In the Member State concerned days20
    E.8.9.2In all countries concerned by the trial months22
    F. Population of Trial Subjects
    F.1 Age Range
    F.1.1Trial has subjects under 18 Yes
    F.1.1Number of subjects for this age range: 100
    F.1.1.1In Utero No
    F.1.1.2Preterm newborn infants (up to gestational age < 37 weeks) No
    F.1.1.3Newborns (0-27 days) No
    F.1.1.4Infants and toddlers (28 days-23 months) No
    F.1.1.5Children (2-11years) Yes
    F.1.1.5.1Number of subjects for this age range: 64
    F.1.1.6Adolescents (12-17 years) Yes
    F.1.1.6.1Number of subjects for this age range: 36
    F.1.2Adults (18-64 years) Yes
    F.1.2.1Number of subjects for this age range: 42
    F.1.3Elderly (>=65 years) No
    F.2 Gender
    F.2.1Female Yes
    F.2.2Male Yes
    F.3 Group of trial subjects
    F.3.1Healthy volunteers No
    F.3.2Patients Yes
    F.3.3Specific vulnerable populations Yes
    F.3.3.1Women of childbearing potential not using contraception No
    F.3.3.2Women of child-bearing potential using contraception Yes
    F.3.3.3Pregnant women No
    F.3.3.4Nursing women No
    F.3.3.5Emergency situation No
    F.3.3.6Subjects incapable of giving consent personally Yes
    F.3.3.6.1Details of subjects incapable of giving consent
    children and adolescents between 2-18 and adults incapable of giving
    consent
    F.3.3.7Others No
    F.4 Planned number of subjects to be included
    F.4.1In the member state10
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 72
    F.4.2.2In the whole clinical trial 142
    F.5 Plans for treatment or care after the subject has ended the participation in the trial (if it is different from the expected normal treatment of that condition)
    Study drug will not be available upon completion of the subject’s participation in the study. The subject should be returned to the care of a physician and standard therapies initiated or resumed as required. However, following completion of the study, subjects will have the option to enroll in an OLE study, as per the OLE study’s inclusion/exclusion criteria.
    G. Investigator Networks to be involved in the Trial
    N. Review by the Competent Authority or Ethics Committee in the country concerned
    N.Competent Authority Decision Authorised
    N.Date of Competent Authority Decision2021-09-22
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2021-09-16
    P. End of Trial
    P.End of Trial StatusCompleted
    P.Date of the global end of the trial2024-04-11
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