Overview Topical CP-690,550 For Chronic Plaque Psoriasis Status: Completed Trial end date: 2009-07-24 Target enrollment: Participant gender: Summary Study will test effectiveness of an experimental drug applied once or twice daily to two psoriasis plaques. Requires 1 clinic visit each week for 5 weeks. Phase: Phase 2 Details Lead Sponsor: PfizerTreatments: Tofacitinib