In this phase 3 study, both 200mg and 400mg certolizumab pegol doses improved psoriasis symptoms at Week 12 measured via PASI 75. Improvement was maintained, after rerandomisation, through Week 48, with a safety profile consistent with its drug class. This Phase 3 CIMPACT trial by Lebwohl et al., assessed the safety and efficacy of certolizumab pegol for the treatment of moderate-to-severe chronic plaque psoriasis.