Efficacy and Safety of ABT-874 in Subjects With Moderate to Severe Chronic Plaque Psoriasis

Inclusion Criteria:

Subject was age 18 or older and in good health (Investigator discretion) with a recent stable medical history.
Subject had a clinical diagnosis of psoriasis for at least 6 months, and had moderate to severe plaque psoriasis

Exclusion Criteria:

Subject had previously received systemic or biologic anti-IL-12 therapy
Subject cannot discontinue systemic therapies and/or topical therapies for the treatment of psoriasis and cannot avoid UVB or PUVA phototherapy
Subject is taking or requires oral or injectable corticosteroids
Subject considered by the investigator, for any reason, to be an unsuitable candidate for the study
Female subject who is pregnant or breast-feeding or considering becoming pregnant