A Phase 3, Multicenter, Randomized, Double-Blind, Parallel-Group, Placebo- and Active-Controlled Study Followed by a Placebo-Controlled Maintenance Period and Open-Label Follow-Up to Evaluate the Efficacy and Safety of Certolizumab Pegol in Subjects With Moderate to Severe Chronic Plaque Psoriasis

The purpose of this study is to investigate the efficacy and safety of two dose levels of
certolizumab pegol compared to active comparator and placebo in adults with moderate to
severe chronic plaque psoriasis.