Multicenter Study of the Safety and Efficacy of the Human Anti-TNF Monoclonal Antibody Adalimumab in Subjects with Moderately to Severely Active Psoriatic Arthritis

Inclusion Criteria:

• Moderate to severe PsA
• Inadequate response to DMARD therapy
• Corticosteroid stable dose <= 10 mg QD
• DMARDs must have been taken for 3 months and stable dose for 4 weeks
• MTX maximum dose = <= 30 mg/week
• Active chronic plaque PS or documented history of chronic plaque PS

Exclusion Criteria:

• No other active skin disease