A Study to Evaluate the Safety, Pharmacokinetics and Efficacy of IMG-007 in Adult Alopecia Areata Participants

This is a phase 1b/2a, open label study to assess the safety, PK, and efficacy of IMG-007 in adult AA participants with 50% or greater scalp hair loss. The study will consist of two cohorts with three periods: a screening period of up to 5 -weeks, a 16-week treatment period and a 20-week follow- up period. Approximately 6 and 24 participants will be sequentially enrolled into cohort 1 and cohort 2, respectively, to receive three intravenous infusions of IMG-007 over 4 weeks.