Open-label Long-term Study of Adjunctive Brivaracetam in Pediatric Subjects With Epilepsy

This is a Phase 3, open-label, single-arm, multicenter, long-term study to evaluate the safety and efficacy of brivaracetam (BRV) in children with epilepsy. This study was initially designed for pediatric subjects who had completed a previous BRV study. With protocol amendment 4, enrollment for "directly enrolled" subjects was modified from 'up to' an additional 100 subjects to "at least" 100 subjects, keeping the planned total enrollment of approximately 600 subjects to allow flexibility in the number of patients reaching 1 year of exposure. With protocol amendment 5, entry criteria for subjects coming for other pediatric core studies in development were included. Additional clarity was provided for subjects enrolled in N01266 that temporary roll over to one of those studies and resume participation in N01266. With protocol amendment 6, central EEG reading and entry visit EEG were removed. Some clarifications on study assessments (questionnaires, EEGs) was provided and inclusion criteria were aligned from an earlier local amendment. With protocol amendment 7, the pregnancy section was updated to clarify that Pregnancy Report and Outcome Form has to be completed in all pregnancies. With protocol amendment 8, re-categorization of study variables in compliance with reporting registries was performed. Modifications due to COVID19 pandemic were implemented and clarification provided that participants may transition to another BRV study. The primary objective is to evaluate the long-term safety and tolerability of BRV. The secondary objective is to assess the efficacy of BRV during long-term exposure.