Overview An Open Label Study of the Effects of Eculizumab in Neuromyelitis Optica Status: Completed Trial end date: 2011-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to determine if the drug eculizumab reduces the attack rate and improves outcome in patients with neuromyelitis optica. Phase: Phase 1/Phase 2 Details Lead Sponsor: Mayo ClinicCollaborator: Alexion PharmaceuticalsTreatments: Eculizumab