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A Study to Investigate Behavioral and Other Co-Occurring Outcomes With Epidiolex as Add-On Therapy in Participants Aged 1 to 65 Years of Age With Tuberous Sclerosis Complex

A Phase 4, Interventional, Multicenter, Open-Label, Single-Arm Study to Assess Behavioral and Other Co-occurring Outcomes Following Treatment With EPID(I/Y)OLEX as Add-on Therapy in Participants (Aged 1 to 65 Years Old) With Seizures Associated With Tuberous Sclerosis Complex

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05864846
Acronym
EpiCom
Enrollment
79
Registered
2023-05-18
Start date
2023-06-29
Completion date
2026-04-06
Last updated
2026-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tuberous Sclerosis Complex Associated Neuropsychiatric Disease

Keywords

Seizures, Tuberous Sclerosis Complex (TSC), Tuberous Sclerosis Complex Associated Neuropsychiatric Disorders (TAND), Epidiolex, Epidyolex, GWP42003-P, JZP926, TSC Associated Neuropsychiatric Disorders, Cannabidiol, Behavior

Brief summary

The purpose of this study is to investigate behavioral and other co-occurring outcomes with EPID(I/Y)OLEX as an add-on therapy in participants aged 1 to 65 years with tuberous sclerosis complex (TSC) who experience seizures.

Interventions

100 mg/ml Cannabidiol Oral solution

Sponsors

Jazz Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
1 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Is within the required age range at the time of signing (or at the time of the participant's parent(s)/Legally Authorized Representative (LAR) signing) the informed consent or providing assent (as applicable): * Participants based in the US: 1 to 65 years of age, inclusive. * Participants based outside the US: 2 to 65 years of age, inclusive. 2. Has a confirmed clinical diagnosis of TSC with a history of seizures in accordance with the 2012 International Tuberous Sclerosis Complex Consensus Conference criteria. 3. Has behaviors (eg, aggression, impulsivity, temper tantrum, self-injury, hyperactivity, extreme shyness, mood swings, poor eye contact, repetitive behaviors, restlessness, difficulty getting along with peers, rigid/inflexible to procedure and/or change) that are considered moderate or severe per the CareGI-S at Screening. 4. Is taking 1 or more anti-seizure medicine (ASM) at a dose that has been stable for at least 4 weeks prior to Screening. • All medications or interventions for epilepsy (including ketogenic diet and any neurostimulation devices for epilepsy) must have been stable for 4 weeks prior to screening and any major changes to treatment regimens should be discussed with the medical monitor. 5. Is naïve to CBD-OS treatment or has been off CBD-OS treatment for at least 3 months prior to Screening. 6. Is willing to maintain any factors expected to affect seizures stable (eg, alcohol consumption, smoking, concomitant medication usage). 7. Is male or female 1. Male participants: • Male participants are eligible to participate if they agree to the following during the intervention period and for at least 2 weeks, corresponding to the time needed to eliminate the study intervention after the last dose of study intervention: * Refrain from donating fresh unwashed semen. PLUS * Use a male condom in addition to a second method of acceptable contraception used by their female partners when having sexual intercourse with a women of childbearing potential (WOCBP) who is not currently pregnant. 2. Female participants: * A female participant is eligible to participate if she is not pregnant or breastfeeding and one of the following conditions applies: * Is a woman of nonchildbearing potential. OR * Is a WOCBP and using a contraceptive method that is highly effective, preferably with low user dependency during the study intervention period and for at least 3 months after the last dose of study intervention. The investigator should evaluate the potential for contraceptive method failure (eg, noncompliance, recently initiated) in relationship to the first dose of study intervention. * A WOCBP must have a negative highly sensitive pregnancy test within 28 days before the first dose of study intervention.

Exclusion criteria

1. Has a clinically significant unstable medical condition other than epilepsy. 2. Has an illness during the 4 weeks prior to screening other than epilepsy which, in the investigator's opinion, could affect study outcomes. 3. Has TSC-specific tumor growth which, in the investigator's opinion, could affect the effectiveness endpoints. 4. Has previously undergone significant surgery for epilepsy that, in the investigator's opinion, may impact the assessment of outcomes. 5. Has initiated felbamate within the last 12 months prior to Screening. 6. Is currently using or has in the past used recreational or medicinal cannabis or synthetic cannabinoid-based medications within the 3 months prior to Screening and is not willing to undergo a 1-month washout period before being rescreened. 7. Has received an investigational medicinal product within the 3 months prior to the Screening Visit. 8. Has previously been assigned study intervention for this study or is currently enrolled in any other interventional study. 9. Has laboratory values at the Baseline Visit that are abnormal and of clinical significance in the investigator's opinion. 10. Participant has significantly impaired hepatic function at the Baseline Visit. 11. Has any history of suicidal behavior or any suicidal ideation of type 4 or 5 as evaluated with C-SSRS or Children's C-SSRS at the Screening Visit (for participants ≥ 4 years of age). 12. Has any known or suspected hypersensitivity to cannabinoids or any of the excipients of CBD-OS. 13. Has a known or suspected history of alcohol or substance abuse.

Design outcomes

Primary

MeasureTime frameDescription
Change in the most problematic behavior Numerical Rating Score (NRS) score within the TAND-SQBaseline, Week 13, Week 26, Week 52
Change in Tuberous Sclerosis Complex Associated Neuropsychiatric Disorders Self-report, Quantified Checklist (TAND-SQ) scoreBaseline, Week 13, Week 26, Week 52
Change in Aberrant Behavior Checklist (ABC) scoreBaseline, Week 13, Week 26, Week 52
Change in Child Behavior Checklist (CBCL) scoreBaseline, Week 26, Week 52
Change in Adult Behavior Checklist (ABCL) scoreBaseline, Week 26, Week 52
Change in Adult Self-Report (ASR) scoreBaseline, Week 26, Week 52
Change in Patient-Reported Outcomes Measurement Information System (PROMIS) domains scoreBaseline, Week 26, Week 52
Change in sleep characteristics using the Children's Sleep Habits Questionnaire (CSHQ)Baseline, Week 26
Change in sleep characteristics using the Pittsburgh Sleep Quality Index (PSQI)Baseline, Week 26
Change in executive function using Behavior Rating Inventory of Executive Function (BRIEF)Baseline, Week 26
Change in caregiver-reported assessment of Quality of Life (QOL) using Pediatric Quality of Life Survey Family Impact Module (PedsQL FIM)Baseline, Week 26
Change in caregiver-reported assessment of family functioning using Pediatric Quality of Life Survey Family Impact Module (PedsQL FIM)Baseline, Week 26
Change in assessment of QOL using Pediatric Quality of Life Inventory (PedsQL)Baseline, Week 26
Change in caregiver impression of overall severity of symptoms (behavior and seizure control) using the Caregiver Global Impression of Severity (CareGI-S)Baseline, Week 4, Week 13, Week 26, Week 52
Change in participant impression of overall severity of symptoms (behavior and seizure control) using the Patient Global Impression of Severity (PGI-S)Baseline, Week 4, Week 13, Week 26, Week 52
Change in clinician impression of overall severity of symptoms (behavior and seizure control) using the Clinician Global Impression of Severity (CGI-S)Baseline, Week 4, Week 13, Week 26, Week 52
Retention RateBaseline, Week 13, Week 26, Week 52Retention rate is the number of participants continuing with CBD-OS treatment over total accrued participants
Number of participants considered treatment respondersBaseline, Week 4, Week 13, Week 26, Week 52Treatment responders will be reported as those with a 25%, 50%, 75% and 100% reduction in seizure frequency from baseline
Change in number of seizure-free daysBaseline, Week 4, Week 13, Week 26, Week 52
Number of participants experiencing a worsening, no change, or improvement in seizure frequencyBaseline, Week 4, Week 13, Week 26, Week 52Number of participants who experience a change in seizure frequency from baseline defined as: 1. worsening (\>25%) 2. no change (-25 to + 25%) 3. improvement (-25% to -50%, ≥-50% to -75%, ≥-75%)
Change in ideation score per the Columbia-Suicide Severity Rating Scale (C-SSRS)Baseline, Week 4, Week 13, Week 26, Week 52
Change in number of suicide attempts per the C-SSRSBaseline, Week 4, Week 13, Week 26, Week 52
Change in ideation score per the Children's C-SSRSBaseline, Week 4, Week 13, Week 26, Week 52
Change in number of suicide attempts per the Children's C-SSRSBaseline, Week 4, Week 13, Week 26, Week 52
Number of participant inpatient hospitalizations due to epilepsyUp to Week 52
Number of withdrawals due to Treatment Emergent Adverse Events (TEAEs)Up to Week 52

Countries

Canada, Poland, United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 13, 2026