Overview A Study of E2020 in Patients With Dementia With Lewy Bodies (DLB), Followed by a Long-term Extension Phase Status: Completed Trial end date: 2013-04-01 Target enrollment: Participant gender: Summary The purpose of this study is to confirm the efficacy of E2020 in patients with dementia with Lewy bodies (DLB). Phase: Phase 3 Details Lead Sponsor: Eisai Co., Ltd.Treatments: Donepezil