Overview Study to Evaluate the Safety and Efficacy of CTP-543 in Adult Patients With Moderate to Severe Alopecia Areata Status: Completed Trial end date: 2019-07-08 Target enrollment: Participant gender: Summary This study will evaluate the safety and efficacy of CTP-543 in adult patients with chronic, moderate to severe alopecia areata. Phase: Phase 2 Details Lead Sponsor: Concert Pharmaceuticals