Business decision. No patients were enrolled

The purpose of the study is to assess the safety and efficacy of an injectable biologic and U0279 as combination therapy compared to that of an injectable biologic alone for severe plaque-type psoriasis.

The study is being conducted in order to obtain safety and efficacy data for an injectable biologic and U0279 as combination therapy compared to that of an injectable biologic alone for severe plaque-type psoriasis. The subjects will be randomized to either U0279 or placebo after having been on an injectable biologic for 12 weeks previously. The subject will be on study medication for 12 weeks. The subjects must have moderate to severe Psoriasis

Inclusion Criteria:

• Male or female subjects 18 years of age or older.
• Surgically sterile females. Females who have had a hysterectomy or completed menopause are allowed.
• Affected Body Surface Area with psoriasis of ≥10%.
• Psoriasis Global Assessment rating of "moderate to severe" or "severe".
• Achieved mild to moderate improvement after receiving an injectable biologic therapy for at least 12 weeks.
• A PASI score of ≥ 50 and ≤75
• Capable of understanding and willing to provide signed and dated written voluntary informed consent (and any local or national authorization requirements) before any protocol specific procedures are performed

Exclusion Criteria:

• Understand that the sponsor can not pay for the an injectable biologic therapy during the course of the study; be willing to pay out of pocket or secure payment through their private health insurance for an injectable biologic.
• History of systemic infection, or other conditions that may interfere with study evaluations or may increase risk for participation. such as, tuberculosis, human immunodeficiency virus (HIV), hepatitis; congestive heart failure or demyelinating disorder.
• Used of prohibited medications or therapies