A Long Term Study To Evaluate The Safety And Tolerability Of CP-690,550 For Patients With Moderate To Severe Chronic Plaque Psoriasis

Inclusion Criteria:

• Have participated in qualifying study with CP-690,550 and are 18 years or older withdiagnosis of plaque-type psoriasis (psoriasis vulgaris).

Exclusion Criteria:

• Non-plaque or drug induced forms of psoriasis;

• Cannot discontinue current oral, injectable or topical therapy for psoriasis or cannotdiscontinue phototherapy (PUVA or UVB).

• Any uncontrolled significant medical condition.