A Study Evaluating The Efficacy And Safety Of CP-690,550 In Asian Subjects With Moderate To Severe Plaque Psoriasis

A PHASE 3, MULTI SITE, RANDOMIZED, DOUBLE BLIND, PLACEBO CONTROLLED, PARALLEL-GROUP STUDY OF THE EFFICACY AND SAFETY OF 2 ORAL DOSES OF CP-690,550 IN ASIAN SUBJECTS WITH MODERATE TO SEVERE CHRONIC PLAQUE PSORIASIS

The primary objective of this study is to compare the efficacy of CP-690,550 (5 mg BID and 10 mg BID) versus placebo for the reduction in severity of plaque psoriasis after 16 weeks of treatment in Asian subjects with moderate to severe chronic plaque psoriasis who are candidates for systemic therapy or phototherapy.

Inclusion Criteria:

• Have had a diagnosis of plaque-type psoriasis (psoriasis vulgaris) for at least 12 months prior to the first screening procedure.
• Have a PASI score of 12 or greater AND a PGA score of 3 ("moderate") or 4 ("severe") at Baseline (Day 1).
• Considered by dermatologist investigator to be a candidate for systemic therapy or phototherapy of psoriasis (either naïve or history of previous treatment).

Exclusion Criteria:

• Currently have non-plaque forms of psoriasis, eg, erythrodermic, guttate, or pustular psoriasis, with the exception of nail psoriasis which is allowed.
• Have current drug induced psoriasis, eg, a new onset of psoriasis or an exacerbation of psoriasis from beta blockers, calcium channel blockers, antimalarial drugs or lithium.
• Subjects who cannot discontinue systemic therapies and/or topical therapies for the treatment of psoriasis and cannot discontinue phototherapy (UVB or PUVA) for the study are excluded.