Effectiveness and Safety of 3 Dosing Regimens of CP-690,550 to Placebo in Subjects With Moderate to Severe Chronic Plaque Psoriasis

Exclusion Criteria

• •Currently have non-plaque forms of psoriasis or drug-induced psoriasis.
• •Subject cannot discontinue systemic therapies and/or topical therapies for the treatment of psoriasis and cannot discontinue phototherapy.
• •Subject is participating in another trial using an investigational agent or procedure.
• •Women who are pregnant or breast-feeding or considering becoming pregnant.