Overview A Long Term Extension Study of E2080 in Lennox-Gastaut Patients Status: Completed Trial end date: 2013-08-01 Target enrollment: Participant gender: Summary To investigate the safety of long term administration of E2080 in the patients with Lennox-Gastaut syndrome who completed the E2080-J081-304 Study. Phase: Phase 3 Details Lead Sponsor: Eisai Co., Ltd.Treatments: Rufinamide