Overview A Long-term, Extension Study of E2020 in Patients With Dementia With Lewy Bodies Status: Completed Trial end date: 2011-03-01 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate the safety and efficacy of E2020 in patients with Dementia with Lewy Bodies (DLB). Phase: Phase 2 Details Lead Sponsor: Eisai Co., Ltd.Treatments: Donepezil