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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT04686786
Registration number
NCT04686786
Ethics application status
Date submitted
23/12/2020
Date registered
29/12/2020
Titles & IDs
Public title
An Open-label Extension Trial of CVL-865 as Adjunctive Therapy in the Treatment of Focal Onset Seizures
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Scientific title
A 57-Week, Multicenter, Active-treatment, Open-label Extension Trial of CVL-865 as Adjunctive Therapy in Adults With Drug-Resistant Focal Onset Seizures
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Secondary ID [1]
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2019-004057-83
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Secondary ID [2]
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CVL-865-SZ-002
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Seizures
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Condition category
Condition code
Neurological
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Epilepsy
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Neurological
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Other neurological disorders
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Drugs - CVL-865
Experimental: CVL-865 25 mg - Participants will receive CVL-865 tablets orally twice daily (BID) up to the maximum dose of 25 milligrams (mg) until Week 57 during the treatment period.
Treatment: Drugs: CVL-865
Participants will receive 25 mg CVL-865 tablets orally BID during the treatment period. The dose may be decreased to 17.5 mg BID for tolerability.
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Intervention code [1]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Number of Participants With Treatment Emergent Adverse Event (TEAEs) and Treatment Emergent Serious Adverse Events (TESAEs)
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Assessment method [1]
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TEAEs will include abuse-related adverse events (AEs) and AEs related to medication handling irregularities (MHIs). The number of Participants With TEAEs and TESAEs will be assessed.
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Timepoint [1]
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From first dose of study drug up to Week 61 (follow up period)
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Primary outcome [2]
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Number of Participants with Clinically Significant Changes in Electrocardiogram (ECGs)
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Assessment method [2]
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12-lead ECGs recordings will be obtained after the participant has been supine and at rest for at least 5 minutes.
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Timepoint [2]
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Baseline up to Week 57 or early termination (ET)
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Primary outcome [3]
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Number of Participants with Clinically Significant Changes in Vital Sign Measurements
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Assessment method [3]
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Vital signs will be measured with the participant in a sitting/semi-recumbent position after 5 minutes rest and will include temperature, systolic and diastolic blood pressure, and heart rate.
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Timepoint [3]
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Baseline up to Week 57 or early termination (ET)
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Primary outcome [4]
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Number of Participants with Clinically Significant Changes in Physical and Neurological Examination Results
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Assessment method [4]
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Number of participants with clinically significant changes in physical and neurological examination results will be assessed.
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Timepoint [4]
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Baseline up to Week 57 or early termination (ET)
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Primary outcome [5]
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Number of Participants With Positive Response to Columbia Suicide-Severity Rating Scale (C-SSRS)
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Assessment method [5]
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The C-SSRS rates an individual's degree of suicidal ideation (SI) on a scale, ranging from "wish to be dead" to "active suicidal ideation with specific plan and intent." The scale identifies SI severity and intensity, which may be indicative of an individual's intent to commit suicide. C-SSRS SI severity subscale ranges from 0 (no SI) to 5 (active SI with plan and intent).
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Timepoint [5]
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Baseline up to Week 61 (follow up period)
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Primary outcome [6]
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Number of Participants with Positive Response to Modified Clinical Institute Withdrawal Assessment - Benzodiazepines (mCIWA-B)
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Assessment method [6]
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The modified Clinical Institute Withdrawal Assessment - Benzodiazepines (mCIWA-B) is a sensitive instrument to measure withdrawal under conditions where there is a taper of medication (rather than abrupt discontinuation). It consists of 17-items that monitor the type and severity of BZD withdrawal symptoms such as irritability, fatigue, appetite, and sleeplessness. The total score ranges from 1 to 68 with higher scores indicating more severe withdrawal.
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Timepoint [6]
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Week 54 up to Week 61
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Eligibility
Key inclusion criteria
* Participants who completed treatment in Trial CVL-865-SZ-001 (NCT04244175)
* A female participant of childbearing potential who is sexually active with a nonsterilized male partner must agree to use a highly effective method of contraception from signing of informed consent through 30 days post last dose
* A male participant with a pregnant or a nonpregnant partner of childbearing potential must agree to use a condom during treatment and until the end of relevant systemic exposure in the male participant for 94 days following the last dose with the investigational medicinal product (IMP)
* Participants who are capable of giving signed informed consent
* Participants who are able, in the opinion of the investigator, to understand the nature of the trial and comply with protocol requirements, including the prescribed dosage regimens, scheduled visits, laboratory tests, and other trial procedures
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Minimum age
18
Years
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Maximum age
75
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Participants who, in the opinion of the investigator, medical monitor, or sponsor, should not participate in the trial
* Participants who, in the judgment of the investigator, experienced poor tolerability to the IMP during the double-blind trial or whose safety assessments resulted in new concerns that would suggest that the participant may not be appropriate for 57 weeks of treatment with CVL-865 in an extension trial
* Participants who experienced status epilepticus during Trial CVL-865-SZ-001
* Participants who have demonstrated substantial noncompliance to trial procedures in Trial CVL-865-SZ-001, based on the investigator's judgment, would not be eligible for this trial
* Participants who answer "yes" on the C-SSRS Suicidal Ideation Item 4 or Item 5 (Active Suicidal Ideation with Some Intent to Act, Without Specific Plan, or Active Suicidal Ideation with Specific Plan and Intent), or participants who answer "yes" on any of the 5 C-SSRS Suicidal Behavior Items (actual attempt, interrupted attempt, aborted attempt, preparatory acts, or behavior), or participants who, in the opinion of the investigator, present a serious risk of suicide
* Participants with any of the following abnormalities in clinical laboratory tests at Visit 1, as assessed by the central laboratory and confirmed by a single repeat measurement, if deemed necessary (Females: Hemoglobin <11 gram per deciliter (g/dL); Males: hemoglobin <12 g/dL; White blood cell (WBC) count <3.0 x 10 power 9 per liter (10^9/L); Neutrophil count <2.0 x 10^9/L; Platelet count <150 × 10^9/L)
* Participants who would be likely to require the use of prohibited concomitant medications during the trial
* Female participants who have a positive pregnancy test result
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Study design
Purpose of the study
Treatment
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Allocation to intervention
NA
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Phase 2
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Active, not recruiting
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
8/12/2020
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
1/07/2025
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Actual
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Sample size
Target
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Accrual to date
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Final
105
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Recruitment in Australia
Recruitment state(s)
NSW,QLD,VIC
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Recruitment hospital [1]
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Camperdown, New South Wales - Camperdown
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Recruitment hospital [2]
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Randwick, New South Wales - Randwick
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Recruitment hospital [3]
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Westmead, New South Wales - Westmead
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Recruitment hospital [4]
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Herston, Queensland - Herston
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Recruitment hospital [5]
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Fitzroy, Victoria - Fitzroy
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Recruitment hospital [6]
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Heidelberg, Victoria - Heidelberg
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Recruitment hospital [7]
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Melbourne, Victoria - Melbourne
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Recruitment hospital [8]
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Parkville, Victoria - Parkville
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Recruitment postcode(s) [1]
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2050 - Camperdown
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Recruitment postcode(s) [2]
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2031 - Randwick
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Recruitment postcode(s) [3]
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2145 - Westmead
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Recruitment postcode(s) [4]
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4029 - Herston
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Recruitment postcode(s) [5]
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3065 - Fitzroy
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Recruitment postcode(s) [6]
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3084 - Heidelberg
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Recruitment postcode(s) [7]
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3004 - Melbourne
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Recruitment postcode(s) [8]
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3050 - Parkville
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Recruitment outside Australia
Country [1]
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United States of America
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State/province [1]
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Arkansas
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United States of America
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State/province [2]
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Connecticut
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United States of America
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Florida
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United States of America
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Hawaii
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Kentucky
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Maine
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United States of America
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Maryland
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Massachusetts
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Missouri
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New Jersey
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Pennsylvania
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South Carolina
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Utah
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Korea, Republic of
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Seoul
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Kujawsko-Pomorskie
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Lodz
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Malopolskie
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Pomorskie
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Wojnicz Lskie
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Bialystok
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Warszawa
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Serbia
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Sumadija
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Spain
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State/province [27]
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Andalusia
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Spain
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Catalonia
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Spain
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Madrid
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Spain
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Sevilla
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Spain
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State/province [31]
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Valencia
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Ukraine
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State/province [32]
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Uzhgorod
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Ukraine
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State/province [33]
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Kyiv
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Country [34]
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Ukraine
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State/province [34]
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Lviv
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Cerevel Therapeutics, LLC
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The purpose of this study is to assess the long-term safety and tolerability of CVL-865 as adjunctive therapy in participants with focal onset seizures.
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Trial website
https://clinicaltrials.gov/study/NCT04686786
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Trial related presentations / publications
Gurrell R, Iredale P, Evrard A, Duveau V, Ruggiero C, Roucard C. Pronounced antiseizure activity of the subtype-selective GABAA positive allosteric modulator darigabat in a mouse model of drug-resistant focal epilepsy. CNS Neurosci Ther. 2022 Nov;28(11):1875-1882. doi: 10.1111/cns.13927. Epub 2022 Aug 14.
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Public notes
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Contacts
Principal investigator
Name
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Eliza Hueda
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Address
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Cerevel Therapeutics, LLC
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Phone
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Fax
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Email
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Contact person for public queries
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Address
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Phone
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Fax
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Email
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT04686786