A Multicenter Open-label Extension Study to Evaluate the Long-term Safety of Cenobamate Adjunctive Therapy in Subjects with Primary Generalized Tonic-Clonic Seizures

2023-506688-32-00 Protocol YKP3089C033 Therapeutic confirmatory (Phase III) Authorised, recruiting

Start 9 Oct 2019 · Status Authorised, recruiting · 5 EU/EEA countries · 12 sites · Protocol YKP3089C033

Overview

Sponsor-declared trial summary

Phase Therapeutic confirmatory (Phase III)
Status Authorised, recruiting
Participants planned 131
Countries 5
Sites 12

Primary Generalized Tonic-Clonic Seizures

To evaluate the safety and tolerability of cenobamate in subjects with PGTC seizures

Key facts

Sponsor
Sk Life Science Inc.
Participant type
Pediatric, Patients
Age range
0-17 years, 18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Nervous System Diseases [C10]
Trial duration
9 Oct 2019 → ongoing
Decision date (initial)
2024-05-14
Transition trial
Yes
Low-intervention
No
Rare-disease indication
No
Vulnerable population
Yes
Funding sources
SK Life Science, Inc.

External identifiers

EU CT number
2023-506688-32-00
EudraCT number
2018-002981-37

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy, Safety, Therapy

To evaluate the safety and tolerability of cenobamate in subjects with PGTC seizures

Secondary objectives 1

  1. N/A

Conditions and MedDRA coding

Primary Generalized Tonic-Clonic Seizures

VersionLevelCodeTermSystem organ class
26.1 PT 10018100 Generalised tonic-clonic seizure 100000004852

Study design 3 periods

#TitleAllocationBlindingRoles blindedArms
1 Double-blind Conversion Period
Subjects who have completed the Double-blind Treatment Period in the Core study, choose to participate in this OLE study and meet eligibility criteria for this study, will sign the informed consent form (ICF) for this study. After signing the ICF for this study, subjects will enter a 12 week Double-blind Conversion Period before starting the Open-label treatment. During the Double-blind Conversion Period adult subjects will receive study drug in tablet form and adolescent subjects, 12 to <18 years of age when they entered the core study will receive study drug as an oral suspension based on body weight to provide adolescent equivalent doses.
Not Applicable Double [{"id":157002,"code":4,"name":"Analyst"},{"id":157001,"code":2,"name":"Investigator"},{"id":157004,"code":5,"name":"Carer"},{"id":157005,"code":3,"name":"Monitor"},{"id":157003,"code":1,"name":"Subject"}]
2 Open-label Maintenance Period
"During this period, adult subjects will receive cenobamate starting at 200mg/day and adolescent subjects will receive the adolescent equivalent based on weight via oral suspension in an Openlabel manner. The duration is 40 weeks and subjects will have 7 study visits during this period."
Not Applicable None
3 Follow-up Period
"After successful completion of the Open-label Maintenance Period, the Principal Investigator at his or her discretion may offer the opportunity to subjects to enroll in an expanded access study. For eligible subjects willing to enroll in the expanded access study, they or their legal guardians (if subject is unable to sign ICF) will be asked to review and sign a separate ICF for the expanded access study at the Visit 13 (End of Treatment) of this study. They will not enter the Follow-up Period for this study. Subjects who successfully complete the Open-label Maintenance Period but do not enroll in the expanded access study will enter the 3- week Follow-up Period."
Not Applicable None

Regulatory references

EMA paediatric investigation plan (PIP)
EMEA-002563-PIP02-19
Plan to share IPD
No

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 1

  1. "In addition to satisfying all the inclusion criterion established in YKP3089C025, each subject must meet the following inclusion criteria to be enrolled in the study: 1. The subject must have successfully completed the Double-blind Treatment Period in the Core study. 2. Written informed consent signed by the subject or legal guardian, prior to entering the study, in accordance with the International Council for Harmonisation (ICH) Good Clinical Practice (GCP) guidelines. If the written informed consent is provided by the legal guardian because the subject is unable to do so, a written or verbal assent from the subject must also be obtained. As required by country-specific regulations, only the subject may sign the ICF in accordance with ICH guidelines."

Exclusion criteria 1

  1. "In addition to all the exclusion criterion established in YKP3089C025, subjects meeting any of the following criteria will be excluded from the study: 1. Subject tests positive, via urine drug screen at Visit 14 of the Core study, for illicit drugs except for tetrahydrocannabinol and Cannabinoids. 2. Any significant changes to the subject's medical history that, in the opinion of the Principal Investigator, could affect the subject's safety or conduct of the study. Any potential exception to the inclusion as well as exclusion criteria allowing de minimis (clinically trivial and meaningless) variations must be approved by the Medical Monitor."

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. The primary endpoints are safety measures: the incidences of adverse events (AEs) and serious adverse events (SAEs); summary statistics for clinical laboratory test results and vital signs; and physical examination, neurologic examination, and electrocardiogram (ECG) findings.

Secondary endpoints 1

  1. N/A

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 5

Cenobamate 25mg

PRD10986001 · Product

Active substance
Cenobamate
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
200 mg milligram(s)
Max total dose
77000 mg milligram(s)
Max treatment duration
55 Week(s)
Authorisation status
Not Authorised
MA holder
SK LIFE SCIENCE, INC.
Paediatric formulation
No
Orphan designation
No

Cenobamate 100mg

PRD4240496 · Product

Active substance
Cenobamate
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
200 mg milligram(s)
Max total dose
77000 mg milligram(s)
Max treatment duration
55 Week(s)
Authorisation status
Not Authorised
MA holder
SK LIFE SCIENCE, INC.
Paediatric formulation
No
Orphan designation
No

Cenobamate 10mg/mL

PRD10986003 · Product

Active substance
Cenobamate
Pharmaceutical form
ORAL SUSPENSION
Route of administration
ORAL USE
Max daily dose
3 mg/kg milligram(s)/kilogram
Max total dose
77000 mg milligram(s)
Max treatment duration
55 Week(s)
Authorisation status
Not Authorised
MA holder
SK LIFE SCIENCE, INC.
Paediatric formulation
No
Orphan designation
No

Cenobamate 12.5mg

PRD10986000 · Product

Active substance
Cenobamate
Pharmaceutical form
TABLET
Route of administration
ORAL USE
Max daily dose
200 mg milligram(s)
Max total dose
77000 mg milligram(s)
Max treatment duration
55 Week(s)
Authorisation status
Not Authorised
MA holder
SK LIFE SCIENCE, INC.
Paediatric formulation
No
Orphan designation
No

Cenobamate 50mg

PRD10986002 · Product

Active substance
Cenobamate
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
200 mg milligram(s)
Max total dose
77000 mg milligram(s)
Max treatment duration
55 Week(s)
Authorisation status
Not Authorised
MA holder
SK LIFE SCIENCE, INC.
Paediatric formulation
No
Orphan designation
No

Placebo 1

Placebo matching with 12.5mg, 25mg, 50mg, 100mg cenobamate tablets and 10mg/kg cenobamate oral suspension unit strength

N/A · Product

Other product name
N/A
Pharmaceutical form
N/A
ATC code
N/A — N/A
Marketing authorisation
N/A
MA holder
N/A
MA country
Iceland
Paediatric formulation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Sk Life Science Inc.

Sponsor organisation
Sk Life Science Inc.
Address
461 From Road Fl 5
City
Paramus
Postcode
07652-3524
Country
United States

Scientific contact point

Organisation
Sk Life Science Inc.
Contact name
Sunita Misra, MD

Public contact point

Organisation
Sk Life Science Inc.
Contact name
Sunita Misra, MD

Third parties 8

OrganisationCity, countryDuties
Icon Clinical Research Limited
ORG-100008322
Dublin 18, Ireland On site monitoring, Code 11, Code 12, Code 2, Interactive response technologies (IRT), Data management, E-data capture, Code 9
Opt-X-Pense Kft.
ORG-100047138
Budaors, Hungary Other
Njs Associates Company
ORG-100045907
Bridgewater, United States Code 10
Scout Clinical
ORG-100042228
Dallas, United States Other
PCI Pharma Services Germany GmbH
ORG-100031981
Großbeeren, Germany Code 14, Other
Iqvia Rds Ireland Limited
ORG-100009589
Dublin 3, Ireland Code 8
MEDPACE LABORATORIES
ORG-100042942
Leuven, Belgium Laboratory analysis
Medidata Solutions Inc.
ORG-100016256
New York, United States E-data capture

Locations

5 EU/EEA countries · 12 investigational sites

By country

CountryMS statusPlanned subjectsSites
Germany Ended 10 4
Hungary Ongoing, recruitment ended 10 1
Poland Ended 24 2
Slovakia Ended 25 2
Spain Ended 8 3
Rest of world
Australia, Ukraine, Korea, Republic of, United States
54

Investigational sites

Germany

4 sites · Ended
Universitaetsklinikum Jena KöR
Klinik für Neuropädiatrie, Am Klinikum 1, Lobeda, Jena
Epilepsiezentrum Kleinwachau gGmbH
Fachklinik für Neurologie, Wachauer Strasse 30, Liegau-Augustusbad, Radeberg
Charite Universitaetsmedizin Berlin KöR
Department of Pediatric Neurology, Augustenburger Platz 1, Wedding, Berlin
Universitaetsklinikum Schleswig-Holstein AöR
Klinik für Kinder- und Jugendmedizin II, Abteilung fuer Neuropädiatrie und Sozialpädiatrie, Arnold-Heller-Strasse 3, Brunswik, Kiel

Hungary

1 site · Ongoing, recruitment ended
Semmelweis University
Gyermekgyógyászati Klinika, Bókay utcai részleg, Tuzolto Utca 7-9, 1094, Budapest

Poland

2 sites · Ended
Niepubliczny Zakład Opieki Zdrowotnej - Centrum Neurologii Dziecięcej i Leczenia Padaczki
NZOZ, Centrum Neurologii Dziecięcej i Leczenia Padaczki, ulica Generała Tadeusza Kościuszki 52/012, 25-316 Kielce, Kielce
Centrum Medyczne Plejady Magdalena Celinska Loewenhoff Michal Zolnowski sp.k.
Centrum Medyczne Plejady, U2 U3 U4 U5, Ul. Tadeusza Szafrana 5d, Cracow

Slovakia

2 sites · Ended
In Medic s.r.o
Neurology, Novy Sad 930/17, 085 01, Bardejov
Konzilium s.r.o.
Neurology, Puskinova 795/8, 018 51, Nova Dubnica

Spain

3 sites · Ended
Hospital Clinico San Carlos
Neurology, Calle Del Profesor Martin Lagos Sn, 28040, Madrid
Hospital Universitario Y Politecnico La Fe
Neurology, Avenida De Fernando Abril Martorell 106, 46026, Valencia
Hospital Universitario Regional De Malaga
Neurology, Avenida De Carlos De Haya Sn, 29010, Malaga

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Hungary 2020-05-27 2020-06-16 2025-05-26
Poland 2019-10-09 2025-09-10 2019-10-16 2025-05-26
Slovakia 2019-10-15 2026-05-20 2019-10-29 2025-05-26

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 32 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol _2023-506688-32-00_redacted 3.0
Protocol (for publication) D1_Protocol Admin Letter_2023-506688-32-00_redacted 1.0
Recruitment arrangements (for publication) K_HU_Recruitment Arrangements_Placeholder document 1
Recruitment arrangements (for publication) K1_PL_Recruitment Procedure_Polish 1.0
Recruitment arrangements (for publication) K1_SK_Recruitment Procedure 1.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Adult-Parent ICF_Hungarian 4.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Adult-Parent SIS_Hungarian_redacted 4.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Adult-Parent_Hungarian_redacted 5.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Assent 12-17 ICF_Hungarian 2.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Assent 12-17 SIS_Hungarian 2.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Assent 12-17_Hungarian 3.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Assent 18 plus ICF_Hungarian 2.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Assent 18 plus PIS_Hungarian 2.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_DTP ICF Addendum_Hungarian 1.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_DTP IS Addendum_Hungarian 1.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Pregnant Participant ICF_Hungarian 2.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Pregnant Participant IS_Hungarian_redacted 2.0
Subject information and informed consent form (for publication) L1_HU_SIS-ICF_Pregnant Participant_Hungarian 3.0
Subject information and informed consent form (for publication) L1_PL_SIS-ICF_ Assent 12-17_Polish 3.0
Subject information and informed consent form (for publication) L1_PL_SIS-ICF_ Assent 18 plus_Polish 3.0
Subject information and informed consent form (for publication) L1_PL_SIS-ICF_Addendum-DtP Drug Supply_Polish 1.0
Subject information and informed consent form (for publication) L1_PL_SIS-ICF_Adult-Parent_Polish_redacted 6.0
Subject information and informed consent form (for publication) L1_PL_SIS-ICF_Pregnant Participant_Polish 4.0
Subject information and informed consent form (for publication) L1_SK_SIS-ICF_Addendum-DtP Drug Supply _Slovak 1.0
Subject information and informed consent form (for publication) L1_SK_SIS-ICF_Adult-Parent_Slovak 5.1
Subject information and informed consent form (for publication) L1_SK_SIS-ICF_Assent 12-17_Slovak 3.1
Subject information and informed consent form (for publication) L1_SK_SIS-ICF_Pregnant Participant_Slovak 3.1
Subject information and informed consent form (for publication) L2_HU_Other Subject Material_Patient Card_Hungarian 2.0
Synopsis of the protocol (for publication) D1_ Protocol Synopsis_2023-506688-32-00 3.0
Synopsis of the protocol (for publication) D1_Protocol Synopsis_2023-506688-32-00_Hungarian 3.0
Synopsis of the protocol (for publication) D1_Protocol Synopsis_2023-506688-32-00_Polish 3.0
Synopsis of the protocol (for publication) D1_Protocol_Synopsis_2023-506688-32-00 _Slovak 3.0

Application history

3 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2024-04-18 Spain Acceptable
2024-05-10
2024-05-10
2 SUBSTANTIAL MODIFICATION SM-1 2025-02-14 Acceptable
2025-04-30
2025-05-05
3 NON SUBSTANTIAL MODIFICATION NSM-1 2025-12-10 Spain Acceptable
2025-04-30
2025-12-10