An Effectiveness and Safety Study of CNTO 1275 in Patients With Active Psoriatic Arthritis

The patients will receive 90 mg (or 63 mg after filtration) subcutaneous injection on Weeks 0, 1, 2, and 3; Placebo subcutaneous injection on Weeks 12 and 16.

The patients will receive placebo subcutaneous injection on Weeks 0, 1, 2, and 3; At weeks 12 and 16 the patients will receive CNTo1275 90 mg (or 63 mg after filtration) subcutaneous injection