Overview Characterization of T-Cell Response in Participants Previously Treated With JNJ-54861911 (Atabecestat) Status: Completed Trial end date: 2018-08-23 Target enrollment: Participant gender: Summary The purpose of this study is to determine T-cell mediated inflammatory immune response in some participants previously exposed to atabecestat. Phase: Early Phase 1 Details Lead Sponsor: Janssen Research & Development, LLC