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A Study to Test the Long-term Safety, Tolerability and Efficacy of Brivaracetam in Study Participants 2 to 26 Years of Age With Childhood Absence Epilepsy or Juvenile Absence Epilepsy

A Multicenter, Open-Label, Single-Arm Study to Evaluate Long-Term Safety, Tolerability, and Efficacy of Brivaracetam in Study Participants 2 to 26 Years of Age With Childhood Absence Epilepsy or Juvenile Absence Epilepsy

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05109234
Enrollment
84
Registered
2021-11-05
Start date
2022-03-30
Completion date
2025-03-18
Last updated
2025-10-22

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

Conditions

Childhood Absence Epilepsy, Juvenile Absence Epilepsy

Keywords

Childhood absence epilepsy, Juvenile absence epilepsy, Brivaracetam, Phase 3, Briviact, CAE, JAE, Epilepsy

Brief summary

The purpose of the study is to investigate the long-term safety, tolerability and efficacy of brivaracetam in pediatric study participants with childhood absence epilepsy (CAE) or juvenile absence epilepsy (JAE).

Interventions

* Pharmaceutical form: Film-coated tablet * Route of administration: Oral use Brivaracetam film-coated tablet \[10, 25 or 50 mg\] will be administered twice per day in equal doses.

* Pharmaceutical form: Oral solution * Route of administration: Oral use Brivaracetam oral solution \[10 mg/mL\]) will be administered twice per day in equal doses.

Sponsors

UCB Biopharma SRL
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Years to 26 Years
Healthy volunteers
No

Inclusion criteria

* Participants who previously participated in N01269 (NCT04666610) and qualify for entry into EP0132 as per N01269 (NCT04666610) protocol with a confirmed diagnosis of childhood absence epilepsy (CAE) or juvenile absence epilepsy (JAE), and for whom a reasonable benefit from long-term administration of brivaracetam (BRV) is expected, in the opinion of the Investigator * A sexually active male study participant must agree to use contraception during the treatment period and for at least 2 days, corresponding to the time needed to eliminate study treatment, after the last dose of study treatment and refrain from donating sperm during this period * A female study participant is eligible to participate if she is not pregnant, not breastfeeding, and at least 1 of the following conditions applies: 1. The study participant is premenarchal OR 2. A woman of childbearing potential (WOCBP) who agrees to follow the contraceptive guidance during the treatment period and for at least 2 days after the last dose of study medication, corresponding to the time needed to eliminate study treatment * Study participant is capable of and provides consent/assent, and the study participant's parent/legal representative/caregiver provides signed informed consent for minor study participants, which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol

Exclusion criteria

* Study participant has a history or presence of paroxysmal nonepileptic seizures * Study participant has severe medical, neurological, or psychiatric disorders or laboratory values, which could, at the discretion of the Investigator, affect safe participation in the study or would preclude appropriate study participation * Study participant has a clinically relevant electrocardiogram (ECG) abnormality in the opinion of the Principal Investigator * Study participant has hepatic impairment (Child Pugh Score A, B, or C) based on the Investigator's assessment * Study participant has active suicidal ideation prior to study entry as indicated by a positive response (Yes) to either Question 4 or Question 5 of the Columbia Suicide Severity Rating Scale (C-SSRS) (for study participants 6 years or older) or clinical judgment (for study participants younger than 6 years). The study participant should be referred immediately to a Mental Healthcare Professional * Study participant has a lifetime history of suicide attempt (including an active attempt, interrupted attempt, or aborted attempt). The Investigator must immediately refer the study participant to a Mental Healthcare Professional * Participant has any medical or psychiatric condition that, in the opinion of the Investigator, could jeopardize or would compromise the study participant's ability to participate in this study * Participant has a known fructose intolerance or known hypersensitivity to any components of brivaracetam (BRV) or excipients or a drug with similar chemical structure. Note that the tablets contain lactose * Study participant has end-stage kidney disease requiring dialysis * Concomitant use of carbamazepine, felbamate, gabapentin, oxcarbazepine, phenobarbital, phenytoin, tiagabine, or vigabatrin * Study participant has planned participation in any clinical study on an investigational drug or device * Study participant has poor compliance with the visit schedule or medication intake in the core study in the opinion of the Investigator

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Treatment Emergent Adverse Events (TEAEs)From Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) monthsAn AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. TEAEs are defined as AEs that had onset on or after the day of first dose of BRV.
Percentage of Participants With TEAEs Leading to Discontinuation of Study TreatmentFrom Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) monthsAn AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. TEAEs are defined as AEs that had onset on or after the day of first dose of BRV. Percentage of participants with TEAEs leading to discontinuation were reported.

Secondary

MeasureTime frameDescription
Percentage of Participants With Serious TEAEsFrom Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) monthsTEAEs are defined as AEs that had onset on or after the day of first dose of BRV. A Serious Adverse Event (SAE) is any untoward medical occurrence that at any dose: results in death, is life-threatening, requires in patient hospitalization or prolongation of existing hospitalization, is a congenital anomaly or birth defect, results in permanent or significant disability/incapacity, other important medical events which based on medical or scientific judgement may jeopardize the patients, or may require medical or surgical intervention to prevent any of the above.
Percentage of Participants With Study Drug-related TEAEsFrom Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) monthsAn AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. TEAEs are defined as AEs that had onset on or after the day of first dose of BRV. Drug related AEs are the subset of AEs that the investigator considers as related to the study drug.
Percentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)Full Evaluation Visit (6 months), Yearly Evaluation Visit (12 months), Full Evaluation Visit (18 months), Yearly Evaluation Visit (24 months)A 1-hour EEG was performed. The awake hours from the EEG was analyzed for absence seizures. Every 1-hour EEG included hyperventilation as a standard provocation test at the beginning of the EEG. Participant was regarded as not meeting the criteria for absence seizure freedom if they received any permitted antiepileptic drugs including benzodiazepine in the 4 days prior to the EEG or during the EEG. Participants who continue in the study beyond 2 years have their data truncated at Year 2 Month 24 yearly evaluation visit (YEV).
Percentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 1-3, Months 4-6, Months 7-9, Months 10-12, Months 13-15, Months 16-18, Months 19-21, Months 22-24 and Entire Evaluation Period (Up to 24 months)During the study, participants kept a diary to record daily seizure activity from entry visit (Visit 1) until the final visit. Each seizure type experienced were recorded. The participant was considered as not meeting the criteria for absence seizure freedom if they use any permitted anti-epileptic drugs at anytime during the period, and/or complete less than 80% of diaries during the period. Evaluation Period includes all daily seizure diary data over the Evaluation Period up to Month 24 YEV, this includes data from the end of Months 22 to 24 up to the Month 24 YEV where this data is truncated. If a participant does not attend the Month 24 YEV then data was truncated at the last day the participant is in the Evaluation Period in the Month 24 YEV window. Participants who continue in the study beyond 2 years have their data truncated at Year 2 Month 24 YEV, or the last day the participant was in the Evaluation Period in the Month 24 YEV window if this visit is not attended.

Countries

Georgia, Italy, Romania, Slovakia, Ukraine, United States

Participant flow

Recruitment details

The study started to enroll participants in March 2022 and concluded in March 2025.

Pre-assignment details

The Participant Flow refers to the Safety Set (SS). Participants who participated in N01269 (NCT04666610) were offered participation in this study.

Participants by arm

ArmCount
Childhood Absence Epilepsy (CAE): Brivaracetam
Participants with CAE entered the Evaluation Period and received a Brivaracetam (BRV) tablet or oral solution dose of 100 mg/day (or equivalent dose of 2 mg/kg/day for study participants weighing less than 50kg). The dose could be adjusted after 3 days in the range of 50 to 200 mg/day (or equivalent dose of 1 to 4 mg/kg/day for study participants weighing less than 50 kg) based on the individual needs. The maximum allowed daily dose was 200 mg/day (or equivalent dose of 4 mg/kg/day for study participants weighing less than 50 kg). The duration of the study per study participant was 2 years at minimum, until approval of BRV for the indication of CAE was obtained for pediatric participants in their age range, until a managed access program (MAP) was established as allowed per country-specific requirements in addition to legal and regulatory guidelines, or until the investigational product development in the related indication is stopped by the Sponsor, whichever come first. For study participants who transitioned to another BRV study EP0224 (NCT06315322) or a managed access program or similar type of program or who convert to commercial BRV (if, when, and where available), the final visit (FV) instead of the early discontinuation visit (EDV) needed to be completed; however, down-titration (dose reduction to half during 4 weeks) and the Safety Visit (SV) were not applicable in such a case.
64
Juvenile Absence Epilepsy (JAE): Brivaracetam
Participants with JAE entered the Evaluation Period and received a Brivaracetam (BRV) tablet or oral solution dose of 100 mg/day (or equivalent dose of 2 mg/kg/day for study participants weighing less than 50 kg). The dose could be adjusted after 3 days in the range of 50 to 200 mg/day (or equivalent dose of 1 to 4 mg/kg/day for study participants weighing less than 50 kg) based on the individual needs. The maximum allowed daily dose was 200 mg/day (or equivalent dose of 4 mg/kg/day for study participants weighing less than 50 kg). The duration of the study per study participant was 2 years at minimum, until approval of BRV for the indication of JAE was obtained for pediatric participants in their age range, until a MAP was established as allowed per country-specific requirements in addition to legal and regulatory guidelines, or until the investigational product development in the related indication is stopped by the Sponsor, whichever come first. For study participants who transitioned to another BRV study EP0224 (NCT06315322) or a managed access program or similar type of program or who convert to commercial BRV (if, when, and where available), the FV instead of the EDV needed to be completed; however, down-titration (dose reduction to half during 4 weeks) and the SV were not applicable in such a case.
20
Total84

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event22
Overall StudyConsent withdrawn by parent/guardian (not AE)34
Overall StudyConsent withdrawn by Participant (not due to AE)10
Overall StudyEvacuated from Ukraine due to the war20
Overall StudyLack of Efficacy50
Overall StudyMissed safety visit; study incomplete per protocol10

Baseline characteristics

CharacteristicChildhood Absence Epilepsy (CAE): BrivaracetamJuvenile Absence Epilepsy (JAE): BrivaracetamTotal
Age, Continuous9.56 years
STANDARD_DEVIATION 2.49
13.93 years
STANDARD_DEVIATION 1.64
10.60 years
STANDARD_DEVIATION 2.97
Age, Customized
12 - <18 years
11 Participants18 Participants29 Participants
Age, Customized
24 months - <12 years
53 Participants2 Participants55 Participants
Race/Ethnicity, Customized
Ethnicity
Hispanic or Latino
5 Participants0 Participants5 Participants
Race/Ethnicity, Customized
Ethnicity
Not Hispanic or Latino
59 Participants20 Participants79 Participants
Race/Ethnicity, Customized
Race
Asian
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Race
Black or African American
5 Participants0 Participants5 Participants
Race/Ethnicity, Customized
Race
Other or Mixed
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Race
White
57 Participants20 Participants77 Participants
Sex: Female, Male
Female
37 Participants11 Participants48 Participants
Sex: Female, Male
Male
27 Participants9 Participants36 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 640 / 20
other
Total, other adverse events
15 / 648 / 20
serious
Total, serious adverse events
2 / 642 / 20

Outcome results

Primary

Percentage of Participants With TEAEs Leading to Discontinuation of Study Treatment

An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. TEAEs are defined as AEs that had onset on or after the day of first dose of BRV. Percentage of participants with TEAEs leading to discontinuation were reported.

Time frame: From Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) months

Population: The SS consisted of all enrolled study participants who took at least 1 dose of study drug in the LTFU study.

ArmMeasureValue (NUMBER)
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With TEAEs Leading to Discontinuation of Study Treatment3.1 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With TEAEs Leading to Discontinuation of Study Treatment10.0 percentage of participants
Primary

Percentage of Participants With Treatment Emergent Adverse Events (TEAEs)

An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. TEAEs are defined as AEs that had onset on or after the day of first dose of BRV.

Time frame: From Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) months

Population: The SS consisted of all enrolled study participants who took at least 1 dose of study drug in the LTFU study.

ArmMeasureValue (NUMBER)
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Treatment Emergent Adverse Events (TEAEs)42.2 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Treatment Emergent Adverse Events (TEAEs)55.0 percentage of participants
Secondary

Percentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time Intervals

During the study, participants kept a diary to record daily seizure activity from entry visit (Visit 1) until the final visit. Each seizure type experienced were recorded. The participant was considered as not meeting the criteria for absence seizure freedom if they use any permitted anti-epileptic drugs at anytime during the period, and/or complete less than 80% of diaries during the period. Evaluation Period includes all daily seizure diary data over the Evaluation Period up to Month 24 YEV, this includes data from the end of Months 22 to 24 up to the Month 24 YEV where this data is truncated. If a participant does not attend the Month 24 YEV then data was truncated at the last day the participant is in the Evaluation Period in the Month 24 YEV window. Participants who continue in the study beyond 2 years have their data truncated at Year 2 Month 24 YEV, or the last day the participant was in the Evaluation Period in the Month 24 YEV window if this visit is not attended.

Time frame: Months 1-3, Months 4-6, Months 7-9, Months 10-12, Months 13-15, Months 16-18, Months 19-21, Months 22-24 and Entire Evaluation Period (Up to 24 months)

Population: The SS consisted of all enrolled study participants who took at least 1 dose of study drug in the LTFU study. Here, n signifies participants who were evaluable at each specified timepoints.

ArmMeasureGroupValue (NUMBER)
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 4-639.0 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 16-1835.9 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 10-1238.8 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 19-2130.3 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 7-937.7 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 22-2421.9 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 13-1531.8 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsEntire Evaluation Period (up to 24 months)28.1 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 1-334.4 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsEntire Evaluation Period (up to 24 months)30.0 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 1-335.0 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 4-655.0 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 7-957.9 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 10-1255.6 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 13-1561.1 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 16-1856.3 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 19-2142.9 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Based on Daily Seizure Diary Over the Entire Evaluation Period and by 3-month Time IntervalsMonths 22-2433.3 percentage of participants
Secondary

Percentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)

A 1-hour EEG was performed. The awake hours from the EEG was analyzed for absence seizures. Every 1-hour EEG included hyperventilation as a standard provocation test at the beginning of the EEG. Participant was regarded as not meeting the criteria for absence seizure freedom if they received any permitted antiepileptic drugs including benzodiazepine in the 4 days prior to the EEG or during the EEG. Participants who continue in the study beyond 2 years have their data truncated at Year 2 Month 24 yearly evaluation visit (YEV).

Time frame: Full Evaluation Visit (6 months), Yearly Evaluation Visit (12 months), Full Evaluation Visit (18 months), Yearly Evaluation Visit (24 months)

Population: The SS consisted of all enrolled study participants who took at least 1 dose of study drug in the LTFU study. Here, overall number of participants analyzed included all participants who were evaluable for this assessment and number analyzed (n) signifies participants who were evaluable at each specified timepoints.

ArmMeasureGroupValue (NUMBER)
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)FEV: 6 months46.4 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)YEV: 12 months42.6 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)FEV: 18 months38.9 percentage of participants
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)YEV: 24 months26.7 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)YEV: 24 months18.2 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)FEV: 6 months70.0 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)FEV: 18 months50.0 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Absence Seizure Freedom Within 4 Days Prior to or During the 1-hour Electroencephalogram (EEG)YEV: 12 months44.4 percentage of participants
Secondary

Percentage of Participants With Serious TEAEs

TEAEs are defined as AEs that had onset on or after the day of first dose of BRV. A Serious Adverse Event (SAE) is any untoward medical occurrence that at any dose: results in death, is life-threatening, requires in patient hospitalization or prolongation of existing hospitalization, is a congenital anomaly or birth defect, results in permanent or significant disability/incapacity, other important medical events which based on medical or scientific judgement may jeopardize the patients, or may require medical or surgical intervention to prevent any of the above.

Time frame: From Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) months

Population: The SS consisted of all enrolled study participants who took at least 1 dose of study drug in the LTFU study.

ArmMeasureValue (NUMBER)
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Serious TEAEs3.1 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Serious TEAEs10.0 percentage of participants
Secondary

Percentage of Participants With Study Drug-related TEAEs

An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study medication, whether or not considered related to the study medication. TEAEs are defined as AEs that had onset on or after the day of first dose of BRV. Drug related AEs are the subset of AEs that the investigator considers as related to the study drug.

Time frame: From Entry Visit up to 16.32 months (median); min, max exposure to BRV was (0.4, 31.0) months

Population: The SS consisted of all enrolled study participants who took at least 1 dose of study drug in the LTFU study.

ArmMeasureValue (NUMBER)
Childhood Absence Epilepsy (CAE): BrivaracetamPercentage of Participants With Study Drug-related TEAEs6.3 percentage of participants
Juvenile Absence Epilepsy (JAE): BrivaracetamPercentage of Participants With Study Drug-related TEAEs10.0 percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026