Placebo to match ritlecitinib 30 mg clinical trials

B7981028 - A LONG-TERM, DOUBLE-BLIND EXTENSION STUDY TO INVESTIGATE THE SAFETY AND EFFICACY OF RITLECITINIB IN PARTICIPANTS WITH SEVERE ALOPECIA AREATA WHO PREVIOUSLY COMPLETED STUDIES B7981027 OR B7981031

This study is looking long-term at a medicine called ritlecitinib for severe alopecia areata, a condition causing hair loss. It's checking how safe and effective the medicine is in people who were in earlier trials. The goal is to see if it helps with hair regrowth and overall well-being.