Overview A Study of [11C]JNJ-42491293, a Possible PET Ligand for the mGlu2 Receptor, in Healthy Adult Volunteers Status: Completed Trial end date: 2011-07-01 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate [11C] JNJ-42491293 as a PET ligand in healthy adult volunteers. Phase: Phase 1 Details Lead Sponsor: Johnson & Johnson Pharmaceutical Research & Development, L.L.C.