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Double-blind, Randomized Study Evaluating the Efficacy and Safety of Brivaracetam in Adults With Partial Onset Seizures

A Multi-center, Double-blind, Parallel-group, Placebo Controlled, Randomized Study: Evaluation of the Efficacy and Safety of Brivaracetam in Subjects (>= 16 to 70 Years Old) With Partial Onset Seizures.

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00490035
Enrollment
399
Registered
2007-06-22
Start date
2007-09-30
Completion date
2009-02-28
Last updated
2022-07-21

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

Conditions

Epilepsy

Keywords

Epilepsy, Brivaracetam, Partial Onset Seizures

Brief summary

This study will evaluate the efficacy and safety of Brivaracetam to support the submission file in the indication of adjunctive treatment in adolescents and adults with partial onset seizures.

Interventions

OTHERPlacebo

Daily oral dose of two equal intakes, morning and evening, of Placebo in a double-blinded way for the 12-week Treatment Period

DRUGBrivaracetam

Daily oral dose of two equal intakes, morning and evening, of Brivaracetam 20 mg /day in a double-blinded way for the 12-week Treatment Period

Sponsors

UCB Pharma SA
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
16 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Subjects were from 16 to 70 years, both inclusive. Subjects under 18 years of age were only included where legally permitted and ethically accepted * Subjects with well-characterized focal epilepsy or epileptic syndrome according to the International League Against Epilepsy (ILAE) classification * Subjects had a history of partial onset seizures (POS) whether or not secondarily generalized (Type I seizures according to the ILAE classification) * Subjects had at least 2 POS whether or not secondarily generalized per month during the 3 months preceding Visit 1 * Subjects had at least 8 POS whether or not secondarily generalized during the 8-Week Baseline Period * Subjects were uncontrolled while treated by 1 to 2 permitted concomitant antiepileptic drugs (AEDs). Vagal nerve stimulation was allowed and was not counted as a concomitant AED

Exclusion criteria

* History or presence of seizures occurring only in clusters (too frequently or indistinctly separated to be reliably counted) before Visit 3 * History or presence of status epilepticus during the year preceding Visit 1 or during Baseline

Design outcomes

Primary

MeasureTime frameDescription
Partial Onset Seizure (Type I) Frequency Per Week Over the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodPartial (Type I) Seizures can be classified into one of the following three groups: Simple Partial Seizures, Complex Partial Seizures, Partial Seizures evolving to Secondarily Generalized Seizures.

Secondary

MeasureTime frameDescription
Responder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodResponders are those subjects with at least 50 % reduction from Baseline to Treatment Period in Partial Onset Seizure frequency per week. The Responder Rate for Partial Onset Seizures (Type I) is the proportion of subjects who have a \>= 50 % reduction in seizure frequency per week from Baseline.
All Seizure Frequency (Type I+II+III) Per Week Over the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodThere are three types of Epilepsy: Partial Epilepsies (Type I), Generalized Epilepsies (Type II) and uncertain classification of Epilepsies (Type III).
Percent Change From Baseline to the 12-week Treatment Period in Partial Onset Seizure (Type I) Frequency Per WeekFrom Baseline to 12-week Treatment PeriodThe percent change from Baseline was computed as: Weekly Seizure Frequency (Treatment) - Weekly Seizure Frequency (Baseline) / Weekly Seizure Frequency (Baseline) \* 100. Negative values indicate a reduction from Baseline with higher negative values showing higher reduction.
Categorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodThe categories are: * \<= 25 % * \- 25 % to \< 25 % * 25 % to \< 50 % * 50 % to \< 75 % * 75 % to \< 100 % * 100 %
Seizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodSubjects were considered seizure free if their seizure counts for every day over the entire Treatment Period was zero and if they completed the Treatment Period.
Time to First Type I Seizure During the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodThe time to first Type I Seizure during the 12-week Treatment Period was measured in days.
Time to Fifth Type I Seizure During the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodThe time to Fifth Type I Seizure during the 12-week Treatment Period was measured in days.
Time to Tenth Type I Seizure During the 12-week Treatment PeriodFrom Baseline to 12-week Treatment PeriodThe time to tenth Type I Seizure during the 12-week Treatment Period was measured in days.
Reduction of Type IC/Type I Seizure Frequency Ratio From Baseline to the 12- Week Treatment Period.From Baseline to 12-week Treatment PeriodThe type IC/Type I seizure frequency ratio is represented by the percentage of subjects having a reduction in the ratio of Type IC seizure frequency over Type IA, IB, and IC seizure frequency from Baseline to Treatment Period.
Change From Baseline to the 12-week Treatment Period in Total Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Seizure Worry Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Daily Activities/Social Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Hospital Anxiety ScoreFrom Baseline to 12-week Treatment PeriodThe Hospital Anxiety and Depression Scale (HADS) was used to evaluate anxiety and depression simultaneously. The HADS was developed as a self-administered scale that has been designed to assess the presence and severity of both anxiety and depression. It consists of 14 items that are scored on a 4-point severity scale ranging from 0 to 3. A score per dimension was calculated with each score ranging from 0 to 21 and higher scores indicating higher depression / anxiety. Negative values in Change from Baseline indicate a decrease of HADS from Baseline to Treatment Period.
Change From Baseline to the 12-week Treatment Period in Hospital Depression ScoreFrom Baseline to 12-week Treatment PeriodThe Hospital Anxiety and Depression Scale (HADS) was used to evaluate anxiety and depression simultaneously. The HADS was developed as a self-administered scale that has been designed to assess the presence and severity of both anxiety and depression. It consists of 14 items that are scored on a 4-point severity scale ranging from 0 to 3. A score per dimension was calculated with each score ranging from 0 to 21 and higher scores indicating higher depression / anxiety. Negative values in Change from Baseline indicate a decrease of HADS from Baseline to Treatment Period.
Patient's Global Evaluation Scale (P-GES) Evaluated at Last Visit or Early Discontinuation VisitLast Visit or Early Discontinuation Visit in the 12-week Treatment PeriodThe Patient's Global Evaluation Scale (P-GES) is a global assessment of the disease evolution which was performed using a seven-point scale (1 = Marked worsening to 7 = Marked improvement) with the start of the study medication as the reference time point. The subject not mentally impaired had to complete it by answering the following question: Overall, has there been a change in your seizures since the start of the study medication?
Investigator's Global Evaluation Scale (I-GES) Evaluated at Last Visit or Early Discontinuation VisitLast Visit or Early Discontinuation Visit in the 12-week Treatment PeriodThe Investigator's Global Evaluation Scale (I-GES) is a global assessment of the disease evolution which was performed using a seven-point scale (1 = Marked worsening to 7 = Marked improvement), with the start of the study medication as reference time point. The Investigator was to complete it by answering the following question: Assess the Overall change in the severity of patient's illness, compared to start of study medication.
Change From Baseline to the 12-week Treatment Period in Energy/Fatigue Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Emotional Well-Being Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Cognitive Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Medication Effects Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Overall Quality of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.
Change From Baseline to the 12-week Treatment Period in Health Status of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) ScoreFrom Baseline to 12-week Treatment PeriodThe QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Countries

Belgium, Finland, France, Germany, Hungary, India, Italy, Netherlands, Poland, Spain, Switzerland, United Kingdom

Participant flow

Recruitment details

This study started to enroll subjects in September 2007 and concluded in February 2009.

Pre-assignment details

Participant Flow refers to the Randomized Set.

Participants by arm

ArmCount
Placebo
Matching Placebo tablets administered twice a day
100
Brivaracetam 20 mg/Day
Brivaracetam 20 mg/day, 10 mg administered twice a day
99
Brivaracetam 50 mg/Day
Brivaracetam 50 mg/day, 25 mg administered twice a day
100
Brivaracetam 100 mg/Day
Brivaracetam 100 mg/day, 50 mg administered twice a day
100
Total Title399
Total798

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAE, non-serious non-fatal3445
Overall StudyAE of unknown type0020
Overall StudyAE, serious fatal1000
Overall StudyLost to Follow-up2010
Overall StudyOther reason0131
Overall StudySerious adverse event (SAE), non-fatal0010
Overall StudyWithdrawal by Subject2110

Baseline characteristics

CharacteristicTotal TitleBrivaracetam 100 mg/DayBrivaracetam 50 mg/DayBrivaracetam 20 mg/DayPlacebo
Age, Continuous37.24 years
STANDARD_DEVIATION 13.05
38.0 years
STANDARD_DEVIATION 13.1
39.0 years
STANDARD_DEVIATION 13.5
35.7 years
STANDARD_DEVIATION 12.5
36.4 years
STANDARD_DEVIATION 13
Age, Customized
<18 years
5 participants1 participants0 participants2 participants2 participants
Age, Customized
>=65 years
11 participants3 participants3 participants3 participants2 participants
Age, Customized
Between 18 and 65 years
383 participants96 participants97 participants94 participants96 participants
Region of Enrollment
Belgium
6 Participants0 Participants3 Participants0 Participants3 Participants
Region of Enrollment
Finland
11 Participants4 Participants1 Participants3 Participants3 Participants
Region of Enrollment
France
60 Participants15 Participants11 Participants17 Participants17 Participants
Region of Enrollment
Germany
41 Participants9 Participants14 Participants10 Participants8 Participants
Region of Enrollment
Hungary
12 Participants3 Participants3 Participants2 Participants4 Participants
Region of Enrollment
India
91 Participants23 Participants23 Participants22 Participants23 Participants
Region of Enrollment
Italy
20 Participants5 Participants3 Participants8 Participants4 Participants
Region of Enrollment
Netherlands
7 Participants3 Participants1 Participants0 Participants3 Participants
Region of Enrollment
Poland
108 Participants27 Participants27 Participants28 Participants26 Participants
Region of Enrollment
Spain
22 Participants4 Participants6 Participants4 Participants8 Participants
Region of Enrollment
Switzerland
15 Participants5 Participants6 Participants3 Participants1 Participants
Region of Enrollment
United Kingdom
6 Participants2 Participants2 Participants2 Participants0 Participants
Sex: Female, Male
Female
171 Participants42 Participants45 Participants38 Participants46 Participants
Sex: Female, Male
Male
228 Participants58 Participants55 Participants61 Participants54 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
22 / 10031 / 9935 / 9937 / 100
serious
Total, serious adverse events
6 / 1002 / 994 / 992 / 100

Outcome results

Primary

Partial Onset Seizure (Type I) Frequency Per Week Over the 12-week Treatment Period

Partial (Type I) Seizures can be classified into one of the following three groups: Simple Partial Seizures, Complex Partial Seizures, Partial Seizures evolving to Secondarily Generalized Seizures.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureValue (MEDIAN)
PlaceboPartial Onset Seizure (Type I) Frequency Per Week Over the 12-week Treatment Period1.75 Seizure Frequency per Week
Brivaracetam 20 mg/DayPartial Onset Seizure (Type I) Frequency Per Week Over the 12-week Treatment Period1.34 Seizure Frequency per Week
Brivaracetam 50 mg/DayPartial Onset Seizure (Type I) Frequency Per Week Over the 12-week Treatment Period1.49 Seizure Frequency per Week
Brivaracetam 100 mg/DayPartial Onset Seizure (Type I) Frequency Per Week Over the 12-week Treatment Period1.26 Seizure Frequency per Week
Comparison: In order to control the Type I error testing was performed in sequence starting with 50 mg, then 100 mg and finally 20 mg Brivaracetam per day versus Placebo, only moving to the next test if the previous one was significant at the 5 % level.p-value: =0.26195% CI: [-5.2, 16.9]ANCOVA
Secondary

All Seizure Frequency (Type I+II+III) Per Week Over the 12-week Treatment Period

There are three types of Epilepsy: Partial Epilepsies (Type I), Generalized Epilepsies (Type II) and uncertain classification of Epilepsies (Type III).

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureValue (MEDIAN)
PlaceboAll Seizure Frequency (Type I+II+III) Per Week Over the 12-week Treatment Period1.75 Times per week
Brivaracetam 20 mg/DayAll Seizure Frequency (Type I+II+III) Per Week Over the 12-week Treatment Period1.34 Times per week
Brivaracetam 50 mg/DayAll Seizure Frequency (Type I+II+III) Per Week Over the 12-week Treatment Period1.49 Times per week
Brivaracetam 100 mg/DayAll Seizure Frequency (Type I+II+III) Per Week Over the 12-week Treatment Period1.26 Times per week
Secondary

Categorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period

The categories are: * \<= 25 % * \- 25 % to \< 25 % * 25 % to \< 50 % * 50 % to \< 75 % * 75 % to \< 100 % * 100 %

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureGroupValue (NUMBER)
PlaceboCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period<= 25 %19.0 Percentage of Participants
PlaceboCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period- 25 % to < 25 %41.0 Percentage of Participants
PlaceboCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period25 % to < 50 %20.0 Percentage of Participants
PlaceboCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period50 % to < 75 %12.0 Percentage of Participants
PlaceboCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period75 % to < 100 %8.0 Percentage of Participants
PlaceboCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period100 %0 Percentage of Participants
Brivaracetam 20 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period100 %2.0 Percentage of Participants
Brivaracetam 20 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period50 % to < 75 %18.2 Percentage of Participants
Brivaracetam 20 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period<= 25 %10.1 Percentage of Participants
Brivaracetam 20 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period25 % to < 50 %27.3 Percentage of Participants
Brivaracetam 20 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period- 25 % to < 25 %35.4 Percentage of Participants
Brivaracetam 20 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period75 % to < 100 %7.1 Percentage of Participants
Brivaracetam 50 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period- 25 % to < 25 %33.3 Percentage of Participants
Brivaracetam 50 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period25 % to < 50 %24.2 Percentage of Participants
Brivaracetam 50 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period50 % to < 75 %17.2 Percentage of Participants
Brivaracetam 50 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period100 %1.0 Percentage of Participants
Brivaracetam 50 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period75 % to < 100 %9.1 Percentage of Participants
Brivaracetam 50 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period<= 25 %15.2 Percentage of Participants
Brivaracetam 100 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period75 % to < 100 %18.0 Percentage of Participants
Brivaracetam 100 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period100 %4.0 Percentage of Participants
Brivaracetam 100 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period- 25 % to < 25 %33.0 Percentage of Participants
Brivaracetam 100 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period50 % to < 75 %14.0 Percentage of Participants
Brivaracetam 100 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period<= 25 %10.0 Percentage of Participants
Brivaracetam 100 mg/DayCategorized Percentage Change From Baseline in Seizure Frequency for Partial Onset Seizure (Type I) Over the 12-week Treatment Period25 % to < 50 %21.0 Percentage of Participants
Secondary

Change From Baseline to the 12-week Treatment Period in Cognitive Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Cognitive Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score1.80 units on a scaleStandard Deviation 19.16
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Cognitive Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score5.36 units on a scaleStandard Deviation 20.69
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Cognitive Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score1.02 units on a scaleStandard Deviation 19.95
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Cognitive Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score0.69 units on a scaleStandard Deviation 16.66
Secondary

Change From Baseline to the 12-week Treatment Period in Daily Activities/Social Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit / Early Discontinuation.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Daily Activities/Social Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score-2.09 units on a scaleStandard Deviation 20.26
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Daily Activities/Social Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.35 units on a scaleStandard Deviation 19.72
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Daily Activities/Social Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.09 units on a scaleStandard Deviation 20.79
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Daily Activities/Social Functioning Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.50 units on a scaleStandard Deviation 22.52
Secondary

Change From Baseline to the 12-week Treatment Period in Emotional Well-Being Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Emotional Well-Being Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.80 units on a scaleStandard Deviation 18.71
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Emotional Well-Being Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.75 units on a scaleStandard Deviation 15.94
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Emotional Well-Being Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.13 units on a scaleStandard Deviation 19.35
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Emotional Well-Being Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score-2.45 units on a scaleStandard Deviation 18.55
Secondary

Change From Baseline to the 12-week Treatment Period in Energy/Fatigue Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Energy/Fatigue Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.49 units on a scaleStandard Deviation 19.22
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Energy/Fatigue Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.53 units on a scaleStandard Deviation 17.04
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Energy/Fatigue Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score1.95 units on a scaleStandard Deviation 20.74
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Energy/Fatigue Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score1.99 units on a scaleStandard Deviation 20.42
Secondary

Change From Baseline to the 12-week Treatment Period in Health Status of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Health Status of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score6.6 units on a scaleStandard Deviation 16.3
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Health Status of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score6.9 units on a scaleStandard Deviation 20.1
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Health Status of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score9.7 units on a scaleStandard Deviation 19.8
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Health Status of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score4.9 units on a scaleStandard Deviation 18.1
Secondary

Change From Baseline to the 12-week Treatment Period in Hospital Anxiety Score

The Hospital Anxiety and Depression Scale (HADS) was used to evaluate anxiety and depression simultaneously. The HADS was developed as a self-administered scale that has been designed to assess the presence and severity of both anxiety and depression. It consists of 14 items that are scored on a 4-point severity scale ranging from 0 to 3. A score per dimension was calculated with each score ranging from 0 to 21 and higher scores indicating higher depression / anxiety. Negative values in Change from Baseline indicate a decrease of HADS from Baseline to Treatment Period.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit / Early Discontinuation.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Hospital Anxiety Score-1.54 units on a scaleStandard Deviation 3.89
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Hospital Anxiety Score-0.59 units on a scaleStandard Deviation 3.89
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Hospital Anxiety Score-0.41 units on a scaleStandard Deviation 3.82
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Hospital Anxiety Score0.08 units on a scaleStandard Deviation 3.6
Secondary

Change From Baseline to the 12-week Treatment Period in Hospital Depression Score

The Hospital Anxiety and Depression Scale (HADS) was used to evaluate anxiety and depression simultaneously. The HADS was developed as a self-administered scale that has been designed to assess the presence and severity of both anxiety and depression. It consists of 14 items that are scored on a 4-point severity scale ranging from 0 to 3. A score per dimension was calculated with each score ranging from 0 to 21 and higher scores indicating higher depression / anxiety. Negative values in Change from Baseline indicate a decrease of HADS from Baseline to Treatment Period.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit / Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Hospital Depression Score-0.65 units on a scaleStandard Deviation 3.58
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Hospital Depression Score-0.10 units on a scaleStandard Deviation 3.67
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Hospital Depression Score0.26 units on a scaleStandard Deviation 3.84
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Hospital Depression Score-0.24 units on a scaleStandard Deviation 3.69
Secondary

Change From Baseline to the 12-week Treatment Period in Medication Effects Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Medication Effects Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score0.92 units on a scaleStandard Deviation 28.93
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Medication Effects Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.64 units on a scaleStandard Deviation 29.24
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Medication Effects Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score-0.85 units on a scaleStandard Deviation 24.36
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Medication Effects Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.00 units on a scaleStandard Deviation 28.22
Secondary

Change From Baseline to the 12-week Treatment Period in Overall Quality of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Overall Quality of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score5.11 units on a scaleStandard Deviation 18.48
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Overall Quality of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score4.52 units on a scaleStandard Deviation 16.73
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Overall Quality of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score4.55 units on a scaleStandard Deviation 18.93
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Overall Quality of Life Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score2.24 units on a scaleStandard Deviation 18.45
Secondary

Change From Baseline to the 12-week Treatment Period in Seizure Worry Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-To-Treat (ITT) population with measurements at Baseline and Last Visit / Early Discontinuation.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Seizure Worry Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score8.25 units on a scaleStandard Deviation 22.01
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Seizure Worry Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score6.23 units on a scaleStandard Deviation 17.97
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Seizure Worry Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score5.34 units on a scaleStandard Deviation 23.81
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Seizure Worry Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score8.04 units on a scaleStandard Deviation 26.26
Secondary

Change From Baseline to the 12-week Treatment Period in Total Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score

The QOLIE-31-P is an adaptation of the original QOLIE-31 instrument that includes 30 items grouped into seven multi-item subscales - Seizure Worry (5 items), Overall Quality of Life (2 items), Emotional Well-Being (5 items), Energy/Fatigue (4 items), Cognitive Functioning (6 items), Medication Effects (3 items) and Daily Activities/Social Functioning (5 items) - and a Health Status item. The subscale scores, the Total score and the Health Status item score are calculated according to the scoring algorithm defined by the author with scores ranging from 0 to 100 and higher scores indicating better function. A positive value in Change from Baseline indicates an improvement from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: Subjects in the Intention-To-Treat (ITT) population with measurements at Baseline and Last Visit / Early Discontinuation.

ArmMeasureValue (MEAN)Dispersion
PlaceboChange From Baseline to the 12-week Treatment Period in Total Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score2.29 units on a scaleStandard Deviation 14.03
Brivaracetam 20 mg/DayChange From Baseline to the 12-week Treatment Period in Total Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score4.50 units on a scaleStandard Deviation 12.71
Brivaracetam 50 mg/DayChange From Baseline to the 12-week Treatment Period in Total Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score3.09 units on a scaleStandard Deviation 14.43
Brivaracetam 100 mg/DayChange From Baseline to the 12-week Treatment Period in Total Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 (QOLIE-31-P) Score1.78 units on a scaleStandard Deviation 13.95
Secondary

Investigator's Global Evaluation Scale (I-GES) Evaluated at Last Visit or Early Discontinuation Visit

The Investigator's Global Evaluation Scale (I-GES) is a global assessment of the disease evolution which was performed using a seven-point scale (1 = Marked worsening to 7 = Marked improvement), with the start of the study medication as reference time point. The Investigator was to complete it by answering the following question: Assess the Overall change in the severity of patient's illness, compared to start of study medication.

Time frame: Last Visit or Early Discontinuation Visit in the 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboInvestigator's Global Evaluation Scale (I-GES) Evaluated at Last Visit or Early Discontinuation Visit4.78 units on a scaleStandard Deviation 1.2
Brivaracetam 20 mg/DayInvestigator's Global Evaluation Scale (I-GES) Evaluated at Last Visit or Early Discontinuation Visit4.99 units on a scaleStandard Deviation 1.15
Brivaracetam 50 mg/DayInvestigator's Global Evaluation Scale (I-GES) Evaluated at Last Visit or Early Discontinuation Visit4.99 units on a scaleStandard Deviation 1.1
Brivaracetam 100 mg/DayInvestigator's Global Evaluation Scale (I-GES) Evaluated at Last Visit or Early Discontinuation Visit5.34 units on a scaleStandard Deviation 1.12
Secondary

Patient's Global Evaluation Scale (P-GES) Evaluated at Last Visit or Early Discontinuation Visit

The Patient's Global Evaluation Scale (P-GES) is a global assessment of the disease evolution which was performed using a seven-point scale (1 = Marked worsening to 7 = Marked improvement) with the start of the study medication as the reference time point. The subject not mentally impaired had to complete it by answering the following question: Overall, has there been a change in your seizures since the start of the study medication?

Time frame: Last Visit or Early Discontinuation Visit in the 12-week Treatment Period

Population: Subjects in the Intention-to-treat (ITT) population with measurements at Baseline and Last Visit or Early Discontinuation Visit.

ArmMeasureValue (MEAN)Dispersion
PlaceboPatient's Global Evaluation Scale (P-GES) Evaluated at Last Visit or Early Discontinuation Visit4.93 units on a scaleStandard Deviation 1.39
Brivaracetam 20 mg/DayPatient's Global Evaluation Scale (P-GES) Evaluated at Last Visit or Early Discontinuation Visit5.17 units on a scaleStandard Deviation 1.27
Brivaracetam 50 mg/DayPatient's Global Evaluation Scale (P-GES) Evaluated at Last Visit or Early Discontinuation Visit5.04 units on a scaleStandard Deviation 1.29
Brivaracetam 100 mg/DayPatient's Global Evaluation Scale (P-GES) Evaluated at Last Visit or Early Discontinuation Visit5.47 units on a scaleStandard Deviation 1.16
Secondary

Percent Change From Baseline to the 12-week Treatment Period in Partial Onset Seizure (Type I) Frequency Per Week

The percent change from Baseline was computed as: Weekly Seizure Frequency (Treatment) - Weekly Seizure Frequency (Baseline) / Weekly Seizure Frequency (Baseline) \* 100. Negative values indicate a reduction from Baseline with higher negative values showing higher reduction.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureValue (MEDIAN)
PlaceboPercent Change From Baseline to the 12-week Treatment Period in Partial Onset Seizure (Type I) Frequency Per Week-17.03 Percent change in seizures per week
Brivaracetam 20 mg/DayPercent Change From Baseline to the 12-week Treatment Period in Partial Onset Seizure (Type I) Frequency Per Week-30.03 Percent change in seizures per week
Brivaracetam 50 mg/DayPercent Change From Baseline to the 12-week Treatment Period in Partial Onset Seizure (Type I) Frequency Per Week-26.83 Percent change in seizures per week
Brivaracetam 100 mg/DayPercent Change From Baseline to the 12-week Treatment Period in Partial Onset Seizure (Type I) Frequency Per Week-32.45 Percent change in seizures per week
Secondary

Reduction of Type IC/Type I Seizure Frequency Ratio From Baseline to the 12- Week Treatment Period.

The type IC/Type I seizure frequency ratio is represented by the percentage of subjects having a reduction in the ratio of Type IC seizure frequency over Type IA, IB, and IC seizure frequency from Baseline to Treatment Period.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.~Type IC Population consists of those subjects with at least one Type IC seizure during the Baseline period.

ArmMeasureValue (NUMBER)
PlaceboReduction of Type IC/Type I Seizure Frequency Ratio From Baseline to the 12- Week Treatment Period.45.9 percentage of participants
Brivaracetam 20 mg/DayReduction of Type IC/Type I Seizure Frequency Ratio From Baseline to the 12- Week Treatment Period.47.2 percentage of participants
Brivaracetam 50 mg/DayReduction of Type IC/Type I Seizure Frequency Ratio From Baseline to the 12- Week Treatment Period.62.5 percentage of participants
Brivaracetam 100 mg/DayReduction of Type IC/Type I Seizure Frequency Ratio From Baseline to the 12- Week Treatment Period.41.0 percentage of participants
Secondary

Responder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment Period

Responders are those subjects with at least 50 % reduction from Baseline to Treatment Period in Partial Onset Seizure frequency per week. The Responder Rate for Partial Onset Seizures (Type I) is the proportion of subjects who have a \>= 50 % reduction in seizure frequency per week from Baseline.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureGroupValue (NUMBER)
PlaceboResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodNon-responders80.0 Percentage of Participants
PlaceboResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodResponders20.0 Percentage of Participants
Brivaracetam 20 mg/DayResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodResponders27.3 Percentage of Participants
Brivaracetam 20 mg/DayResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodNon-responders72.7 Percentage of Participants
Brivaracetam 50 mg/DayResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodNon-responders72.7 Percentage of Participants
Brivaracetam 50 mg/DayResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodResponders27.3 Percentage of Participants
Brivaracetam 100 mg/DayResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodNon-responders64.0 Percentage of Participants
Brivaracetam 100 mg/DayResponder Rate for Partial Onset Seizures (Type I) Frequency Per Week Over the 12-week Treatment PeriodResponders36.0 Percentage of Participants
Secondary

Seizure Freedom Rate (All Seizure Types) Over the 12-week Treatment Period

Subjects were considered seizure free if their seizure counts for every day over the entire Treatment Period was zero and if they completed the Treatment Period.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureGroupValue (NUMBER)
PlaceboSeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNot Seizure-free100.0 Percentage of Participants
PlaceboSeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNo Seizures but non-completer0 Percentage of Participants
PlaceboSeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodSeizure free0 Percentage of Participants
Brivaracetam 20 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNot Seizure-free98.0 Percentage of Participants
Brivaracetam 20 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNo Seizures but non-completer0 Percentage of Participants
Brivaracetam 20 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodSeizure free2.0 Percentage of Participants
Brivaracetam 50 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodSeizure free0 Percentage of Participants
Brivaracetam 50 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNo Seizures but non-completer1.0 Percentage of Participants
Brivaracetam 50 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNot Seizure-free99.0 Percentage of Participants
Brivaracetam 100 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNot Seizure-free96.0 Percentage of Participants
Brivaracetam 100 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodNo Seizures but non-completer0 Percentage of Participants
Brivaracetam 100 mg/DaySeizure Freedom Rate (All Seizure Types) Over the 12-week Treatment PeriodSeizure free4.0 Percentage of Participants
Secondary

Time to Fifth Type I Seizure During the 12-week Treatment Period

The time to Fifth Type I Seizure during the 12-week Treatment Period was measured in days.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureValue (MEDIAN)
PlaceboTime to Fifth Type I Seizure During the 12-week Treatment Period19 Days
Brivaracetam 20 mg/DayTime to Fifth Type I Seizure During the 12-week Treatment Period25 Days
Brivaracetam 50 mg/DayTime to Fifth Type I Seizure During the 12-week Treatment Period24 Days
Brivaracetam 100 mg/DayTime to Fifth Type I Seizure During the 12-week Treatment Period24 Days
Secondary

Time to First Type I Seizure During the 12-week Treatment Period

The time to first Type I Seizure during the 12-week Treatment Period was measured in days.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureValue (MEDIAN)
PlaceboTime to First Type I Seizure During the 12-week Treatment Period4 Days
Brivaracetam 20 mg/DayTime to First Type I Seizure During the 12-week Treatment Period6 Days
Brivaracetam 50 mg/DayTime to First Type I Seizure During the 12-week Treatment Period6 Days
Brivaracetam 100 mg/DayTime to First Type I Seizure During the 12-week Treatment Period4 Days
Secondary

Time to Tenth Type I Seizure During the 12-week Treatment Period

The time to tenth Type I Seizure during the 12-week Treatment Period was measured in days.

Time frame: From Baseline to 12-week Treatment Period

Population: The Intention-to-treat (ITT) population was defined as all randomized subjects who received at least 1 dose of study medication.

ArmMeasureValue (MEDIAN)
PlaceboTime to Tenth Type I Seizure During the 12-week Treatment Period39 Days
Brivaracetam 20 mg/DayTime to Tenth Type I Seizure During the 12-week Treatment Period49 Days
Brivaracetam 50 mg/DayTime to Tenth Type I Seizure During the 12-week Treatment Period40 Days
Brivaracetam 100 mg/DayTime to Tenth Type I Seizure During the 12-week Treatment Period46 Days

Source: ClinicalTrials.gov · Data processed: Mar 22, 2026