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    Summary
    EudraCT Number:2020-003140-83
    Sponsor's Protocol Code Number:NBI-921352-DEE2012
    National Competent Authority:France - ANSM
    Clinical Trial Type:EEA CTA
    Trial Status:Completed
    Date on which this record was first entered in the EudraCT database:2021-11-10
    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 ConcernedFrance - ANSM
    A.2EudraCT number2020-003140-83
    A.3Full title of the trial
    A Phase 2 Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy, Safety, Tolerability, and Pharmacokinetics of NBI-921352 as Adjunctive Therapy in Subjects with SCN8A Developmental and Epileptic Encephalopathy Syndrome (SCN8A-DEE)
    Étude de phase 2, randomisée, en double aveugle, contrôlée contre placebo, visant à évaluer l’efficacité, la sécurité d’emploi, la tolérance et la pharmacocinétique du NBI-921352 en tant que traitement adjuvant chez des patients présentant une encéphalopathie épileptique et développementale associée au gène SCN8A (SCN8A-DEE)
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    Study to Evaluate NBI-921352 as Adjunctive Therapy in Subjects With SCN8A Developmental and Epileptic Encephalopathy Syndrome (SCN8A-DEE)
    A.4.1Sponsor's protocol code numberNBI-921352-DEE2012
    A.7Trial is part of a Paediatric Investigation Plan No
    A.8EMA Decision number of Paediatric Investigation Plan
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorNeurocrine Biosciences, 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 supportNeurocrine Biosciences, Inc.
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationNeurocrine Biosciences, Inc.
    B.5.2Functional name of contact pointMedical Information Call Center
    B.5.3 Address:
    B.5.3.1Street Address12780 El Camino Real
    B.5.3.2Town/ citySan Diego
    B.5.3.3Post codeCA 92130
    B.5.3.4CountryUnited States
    B.5.4Telephone number+18776413461
    B.5.6E-mailmedinfo@neurocrine.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 nameNBI-921352
    D.3.4Pharmaceutical form Granules
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNNBI-921352
    D.3.9.2Current sponsor codeNBI-921352
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number2
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNNBI-921352
    D.3.9.2Current sponsor codeNBI-921352
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number2.5
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNNBI-921352
    D.3.9.2Current sponsor codeNBI-921352
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number5
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNNBI-921352
    D.3.9.2Current sponsor codeNBI-921352
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number10
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNNBI-921352
    D.3.9.2Current sponsor codeNBI-921352
    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 placeboGranules
    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
    SCN8A Developmental and Epileptic Encephalopathy Syndrome (SCN8A-DEE)
    E.1.1.1Medical condition in easily understood language
    Epilepsy
    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 PT
    E.1.2Classification code 10077380
    E.1.2Term Epileptic encephalopathy
    E.1.2System Organ Class 10029205 - Nervous system disorders
    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 NBI-921352 as adjunctive therapy on the frequency of countable motor seizures
    E.2.2Secondary objectives of the trial
    • To evaluate the efficacy of NBI-921352 using the Clinical and Parent/Caregiver Global Impression of Change scales and the Clinical and Parent/Caregiver Global Impression of Severity scales.
    • To characterize the pharmacokinetics of NBI-921352 and determine the effect of NBI-921352 on plasma levels of concomitant ASMs and evaluated metabolites.
    • To evaluate the safety and tolerability of NBI-921352.
    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    • Be a male or female 12 to 21 years of age, inclusive.
    • Have a diagnosis of SCN8A-DEE supported by both clinical and genetic findings
    • Have on average at least 1 countable motor seizure per week and not be seizure-free for more than 20 consecutive days.
    • Being treated with at least 1 other ASM, but no more than 4 ASMs.
    • Have failed to achieve seizure freedom with at least 2 ASMs.
    • Must be using a nocturnal alerting system or practice consistent with standards of care at the time of screening and continue to use this for the duration of the study.
    • Must have an adequate rescue medication regimen per the investigator’s judgment in place at the time of screening and for the duration of the study.
    • Have a body weight of at least 10 kg
    • The subject's parent/caregiver is able to accurately identify seizure types, especially countable motor seizures and is able to complete seizure diary
    E.4Principal exclusion criteria
    • Have previously been enrolled in this study and received blinded treatment.
    • Have participated in an interventional clinical trial <30 days prior to screening.
    • Have symptoms that would be more consistent with another epilepsy disorder such as Dravet syndrome (eg, fever-induced episodes of status epilepticus, frequent myoclonic seizures, worsening on sodium channel blockers, absence seizures with generalized spike-and-wave EEG as the sole seizure type).
    • Are currently receiving cannabinoids or medical marijuana except Epidiolex/Epidyolex, unless approved by the Sponsor.
    • Are currently taking systemic steroids (excluding inhaled medication for asthma treatments). If subject has received these medications in the past, must be off these medications for at least 3 months prior to the screening visit and these drugs may not be initiated during the duration of the study. Intermittent steroids to treat nonepilepsy related diseases (such as allergies or dermatological conditions) are not exclusionary.
    • Have a history of moderate or severe head trauma or other neurological disorders or systemic medical diseases that are, in the investigator’s opinion, likely to affect nervous system functioning.
    • Have a clinically significant medical condition or chronic disease that in the opinion of the investigator would preclude the subject from participating in and completing the study or that could confound interpretation of study outcome.
    • Have clinically significant abnormal vital signs at the screening visit as determined by the investigator.
    • Have one or more clinical laboratory test values outside the reference range, based on blood samples taken at the screening visit, that are of potential risk to the subject’s safety
    • Have, at the screening visit, an ECG finding of a corrected QT interval using Fridericia’s formula (QTcF) >450 msec or presence of any significant cardiac abnormality.
    E.5 End points
    E.5.1Primary end point(s)
    Percentage change from baseline in 28-day seizure frequency for countable motor seizures during the treatment period of the study.
    E.5.1.1Timepoint(s) of evaluation of this end point
    Time Frame: Baseline, Treatment Period: Day 1 to Week 16
    E.5.2Secondary end point(s)
    • Treatment response of ≥ 50% decrease for countable motor seizures
    • Treatment response of ≥ 25%, ≥ 75%, or 100% decrease in countable motor seizures
    • Clinical Global Impression of Change (CGIC) at each study visit
    • Parent/Caregiver Global Impression of Change (GIC) at each study visit
    • Change from Baseline in Clinical Global Impression of Severity (CGIS)
    • Change from Baseline in Parent/Caregiver Global Impression of Severity (GIS)

    Other secondary endpoints (maintenance period):
    -Percentage Change from Baseline in 28-day Seizure Frequency for countable motor seizures
    -Treatment response of ≥ 25%, ≥ 50%, ≥ 75%, or 100% decrease for countable motor seizures
    E.5.2.1Timepoint(s) of evaluation of this end point
    Time Frame: Baseline, Treatment Period: Day 1 to Week 16.

    Other secondary endpoints (maintenance period):
    Timeframe: Maintenance Period: Week 7 to Week 16
    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 No
    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) Yes
    E.7.3Therapeutic confirmatory (Phase III) No
    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 EEA20
    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
    Australia
    Brazil
    Canada
    New Zealand
    United States
    Belgium
    Denmark
    France
    Germany
    Italy
    Netherlands
    Poland
    Portugal
    Spain
    United Kingdom
    Czechia
    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
    LVLS
    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 months
    E.8.9.1In the Member State concerned days
    E.8.9.2In all countries concerned by the trial years2
    E.8.9.2In all countries concerned by the trial months4
    E.8.9.2In all countries concerned by the trial days0
    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: 23
    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) No
    F.1.1.6Adolescents (12-17 years) Yes
    F.1.1.6.1Number of subjects for this age range: 23
    F.1.2Adults (18-64 years) Yes
    F.1.2.1Number of subjects for this age range: 7
    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
    The study population may include adult subjects who are not capable of providing consent due to developmental delay and cognitive impairment common in patients with SCN8A-DEE.
    F.3.3.7Others No
    F.4 Planned number of subjects to be included
    F.4.1In the member state9
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 30
    F.4.2.2In the whole clinical trial 52
    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)
    Normal treatment as discussed with their doctor or eligible subjects
    will have the option to enrol into an extension study to receive NBI-921352.
    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 Decision2022-01-06
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2022-01-07
    P. End of Trial
    P.End of Trial StatusCompleted
    P.Date of the global end of the trial2024-12-05
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