Effect of Brivaracetam (BRV) on Nonpsychotic Behavioral Side Effects in Subjects Treated Previously With Levetiracetam (LEV)

• Shift in the maximum intensity from Baseline to the end of the Treatment Period for side effects primarily associated with discontinuation of Levetiracetam (LEV) as determined by the Investigator [ Time Frame: From Baseline (maximum of 12 weeks prior to Study Entry at Week -1) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]
• Change from Study Entry in nonpsychotic behavioral side effects to the end of the Treatment Period/Early Discontinuation Visit, measured by means of the Investigator Global Evaluation of nonpsychotic Behavioral Side Effects (I-GEBSE) scale [ Time Frame: From Study Entry (Visit1, Week -1) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]

  There are seven levels for the I-GEBSE:

  • Marked improvement
  • Moderate improvement
  • Slight improvement
  • No change
  • Slight worsening
  • Moderate worsening
  • Marked worsening
• Number of subjects who have a complete abatement of nonpsychotic behavioral side effects for the last assessment during the Treatment Period, based on the Investigator's overall assessment [ Time Frame: From Baseline (maximum of 12 weeks prior to Study Entry at Week -1) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]
• Number of subjects who are free from nonpsychotic behavioral side effects over the entire Treatment Period [ Time Frame: From Visit 2 (Week 0) to Visit 6 (Week 12) ] [ Designated as safety issue: No ]
• Incidence of Treatment Emergent Adverse Events during the Study Period [ Time Frame: From Study Entry (Visit1, Week -1) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]
• Withdrawal due to an Adverse Event (AE) during the Study Period [ Time Frame: From Study Entry (Visit1, Week -1) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]
• Occurrence of Serious Adverse Events during the Study Period [ Time Frame: From Study Entry (Visit1, Week -1) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]
• Partial Onset Seizure (POS) frequency over the Treatment Period for subjects with focal Epilepsy [ Time Frame: From 4 weeks prior to Visit 2 (Week 0) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]
  The POS frequency is standardized to a 28-day duration and changes in POS frequency are measured relative to the reported seizure counts for the 4 weeks prior to Visit 2 (Week 0).
• Generalized seizure days over the Treatment Period for subjects with idiopathic generalized Epilepsy [ Time Frame: From 4 weeks prior to Visit 2 (Week 0) to the end of the Treatment Period (Visit 6, Week 12) or Early Discontinuation Visit ] [ Designated as safety issue: No ]
  Generalized seizure days are standardized to a 28-day duration and changes in generalized seizure days are measured relative to the reported seizure counts for the 4 weeks prior to Visit 2 (Week 0).

Trial N01395 is to evaluate the reduction of nonpsychotic behavioral side effects in subjects with Epilepsy who switched to BRV 200 mg/day after discontinuing LEV due to such side effects; as well as the efficacy, safety and tolerability of BRV. No statistical hypothesis testing will be performed.

Inclusion Criteria:

• Subject with well-characterized Epilepsy according to the 1989 International League Against Epilepsy (ILAE) classification
• Subject with Epilepsy who the investigator expects will benefit from Levetiracetam (LEV) but for whom the investigator has decided to discontinue due to nonpsychotic behavioral side effects following the introduction of LEV
• Subject is currently receiving LEV at the recommended therapeutic dose (dose ranging from 1 g/day to 3 g/day)
• Subject currently treated with minimum 2 and maximum 3 Anti-Epileptic Drugs (AEDs) including LEV. Vagal Nerve Stimulation (VNS) is allowed and will be counted as a concomitant AED
• Female subjects without childbearing potential (postmenopausal for at least 2 years, bilateral oophorectomy or tubal ligation, complete hysterectomy) are eligible. Female subjects with childbearing potential are eligible if they use a medically accepted contraceptive method

Exclusion Criteria:

• Subject has a lifetime history of suicide attempt (including an actual, interrupted or aborted attempt), or has had suicidal ideation in the past 6 months as indicated by a positive response ("Yes") to either Question 4 or Question 5 of the Columbia-Suicide Severity Rating Scale (C-SSRS) at Visit 1
• Subject whose seizures could not be reliably counted on a regular basis due to their fast and repetitive occurrence (clusters or flurries)
• Subject has history or presence of status epilepticus during the year preceding Visit 1 or during Baseline
• Subject has history or presence of known psychogenic nonepileptic seizures
• Subject has any clinical conditions (eg, bone marrow depression, chronic hepatic disease, and/or severe renal impairment) which impair reliable participation in the study or necessitate the use of medication not allowed by protocol
• Subject is pregnant or lactating