Placebo for pf-06651600-15

B7981118 - A Phase 2b Randomized, Double Blind, 12-Week Placebo Controlled Study With a 12-Week Double-Blind Extension Period to Evaluate the Efficacy, Safety and Tolerability of Ritlecitinib (PF 06651600) in Adult Participants with Chronic Spontaneous Urticaria

B7981119 A Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled, 16-Week Study Evaluating the Safety and Efficacy of Ritlecitinib (PF-06651600) in Adults with Moderate to Severe Hidradenitis Suppurativa

B7981080 - A PHASE 3 RANDOMIZED, DOUBLE-BLIND, 52-WEEK PLACEBOCONTROLLED MULTI-CENTER STUDY WITH A DOUBLE-BLIND 52-WEEK EXTENSION PERIOD WITH RANDOMIZED DOSE UP/DOSE DOWN TITRATION INVESTIGATING THE EFFICACY, SAFETY, AND TOLERABILITY OF RITLECITINIB IN ADULT PARTICIPANTS WITH NONSEGMENTAL VITILIGO