Skip to main content
TTrialFinderData
TrialFinderData is for informational purposes only and does not provide medical advice. Always talk to your doctor.

Updated June 2026 · ClinicalTrials.gov

RECRUITINGPhase 3INTERVENTIONAL

A Study to Test the Safety and Tolerability of Brivaracetam in Children and Adolescents With Seizures

Open-Label, Single-Arm, Multicenter Study to Evaluate Long-Term Safety and Tolerability of Brivaracetam Used as Adjunctive Treatment in Pediatric Study Participants With Epilepsy

A Study to Test the Safety and Tolerability of Brivaracetam in Children and Adolescents With Seizures (NCT04715646) is a Phase 3 interventional studying Epilepsy, sponsored by UCB Biopharma SRL. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

Important: This information is not medical advice. Talk to your doctor about whether a clinical trial is right for you.

About This Trial

The purpose of the study is to evaluate the long-term safety and tolerability of brivaracetam.

What Stage of Research Is This?

Phase 3 trials confirm efficacy and safety in large patient groups (often 300–3,000+) and form the evidence base for an FDA approval submission. For Epilepsy, Phase 3 studies typically randomize participants between the investigational treatment and either a placebo or current standard of care. A successful Phase 3 result is the threshold most treatments need to clear before regulatory approval.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

Target enrollment of 70 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused Epilepsy subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.

Who May Be Eligible (Plain English)

Who May Qualify: Inclusion criteria for long-term follow-up (LTFU) study participants only - Study participants ≥ 1 month of age with a confirmed diagnosis of epilepsy who participated in core study N01266 \[NCT01364597\] and/or N01349 \[NCT03325439\] Inclusion criteria for directly enrolled (DE) study participants in Japan only - Study participant is ≥ 4 years to \< 16 years of age - Study participant has presence of an electroencephalogram (EEG) reading compatible with the diagnosis of focal epilepsy within the last 10 years - Study participant has uncontrolled partial-onset seizure (POS) after an adequate course of treatment with at least 1 antiepileptic drug (AED) - Study participant had at least 1 POS during the 4-week Screening Period Who Should NOT Join This Trial: Exclusion criteria for all study participants - Severe medical, neurological, or psychiatric disorders or laboratory values, which may have an impact on the safety of the study participant - Study participant is currently participating in another study of an investigational medication (or a medical device) other than brivaracetam (BRV). Exclusion criteria for long-term follow-up (LTFU) study participants only \- Study participant ≥ 6 years of age has a lifetime history of suicide attempt or has suicidal ideation in the past 6 months as indicated on the Columbia Suicide Severity Rating Scale (C-SSRS) Exclusion criteria for directly enrolled (DE) study participants in Japan only - Study participant has a history of primary generalized epilepsy, psychogenic non-epileptic seizures, or febrile seizures - Study participant has a history of status epilepticus in the 30 days prior to the Screening Visit (ScrV) or during the Screening Period - Study participant has any clinically significant illness - Study participant has clinically significant laboratory abnormality that may increase the risk associated with study participation or may interfere with the interpretation of study results ...See full criteria on ClinicalTrials.gov Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language
Inclusion Criteria: Inclusion criteria for long-term follow-up (LTFU) study participants only * Study participants ≥ 1 month of age with a confirmed diagnosis of epilepsy who participated in core study N01266 \[NCT01364597\] and/or N01349 \[NCT03325439\] Inclusion criteria for directly enrolled (DE) study participants in Japan only * Study participant is ≥ 4 years to \< 16 years of age * Study participant has presence of an electroencephalogram (EEG) reading compatible with the diagnosis of focal epilepsy within the last 10 years * Study participant has uncontrolled partial-onset seizure (POS) after an adequate course of treatment with at least 1 antiepileptic drug (AED) * Study participant had at least 1 POS during the 4-week Screening Period Exclusion Criteria: Exclusion criteria for all study participants * Severe medical, neurological, or psychiatric disorders or laboratory values, which may have an impact on the safety of the study participant * Study participant is currently participating in another study of an investigational medication (or a medical device) other than brivaracetam (BRV). Exclusion criteria for long-term follow-up (LTFU) study participants only \- Study participant ≥ 6 years of age has a lifetime history of suicide attempt or has suicidal ideation in the past 6 months as indicated on the Columbia Suicide Severity Rating Scale (C-SSRS) Exclusion criteria for directly enrolled (DE) study participants in Japan only * Study participant has a history of primary generalized epilepsy, psychogenic non-epileptic seizures, or febrile seizures * Study participant has a history of status epilepticus in the 30 days prior to the Screening Visit (ScrV) or during the Screening Period * Study participant has any clinically significant illness * Study participant has clinically significant laboratory abnormality that may increase the risk associated with study participation or may interfere with the interpretation of study results * Study participant has a clinically significant ECG abnormality * Study participant had major surgery within 6 months prior to the ScrV

Treatments Being Tested

DRUG

Brivaracetam

Brivaracetam (BRV) tablets or oral solution will be administered twice daily (bid) in 2 equally divided doses. Tablet strengths: 10 mg, 25 mg, 50 mg Route of administration: oral Oral solution Concentration: 10 mg/ml Route of administration: oral

Locations (20)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

Ep0156 259
Hawthorne, New York, United States
Ep0156 237
Durham, North Carolina, United States
Ep0156 204
Leuven, Belgium
Ep0156 240
Prague, Czechia
Ep0156 207
Loos, France
Ep0156 209
Freiburg im Breisgau, Germany
Ep0156 210
Budapest, Hungary
Ep0156 247
Budapest, Hungary
Ep0156 232
Miskolc, Hungary
Ep0156 230
Roma, Italy
Ep0156 803
Bunkyō City, Japan
Ep0156 808
Chūō, Japan
Ep0156 800
Gifu, Japan
Ep0156 807
Hiroshima, Japan
Ep0156 815
Kodaira-shi, Japan
Ep0156 813
Kōshi, Japan
Ep0156 806
Kyoto, Japan
Ep0156 811
Nagoya, Japan
Ep0156 812
Niigata, Japan
Ep0156 817
Osaka, Japan

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT04715646), the sponsor (UCB Biopharma SRL), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT04715646 clinical trial studying?

The purpose of the study is to evaluate the long-term safety and tolerability of brivaracetam. The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT04715646?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT04715646?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT04715646. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT04715646. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-06-26 · Data from ClinicalTrials.gov.