Overview Study to Evaluate Safety and Efficacy of SYHX1901 Tablets in Severe Alopecia Areata Patients Status: NOT_YET_RECRUITING Trial end date: 2027-11-17 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate the efficacy and safety of different doses of SYHX1901 tablets in the treatment of severe alopecia areata.Phase: PHASE2 Details Lead Sponsor: CSPC Ouyi Pharmaceutical Co., Ltd.Collaborator: CSPC ZhongQi Pharmaceutical Technology Co., Ltd.