Overview Study to Evaluate the Long-term Safety and Tolerability of USL261 in Patients With Seizure Clusters Status: Terminated Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary The purpose of this study is to examine the long-term safety and tolerability of USL261 in the treatment of seizure clusters. Phase: Phase 3 Details Lead Sponsor: UCB Biopharma S.P.R.L.Upsher-Smith Laboratories