This is a randomized double blind, double dummy, placebo and active comparator controlled, parallel design study that is being performed to assess the safety and efficacy of risankizumab (BI 655066) to support registration for the treatment of moderate to severe chronic plaque psoriasis in adult patients.
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Percentage of Participants Achieving 90% Improvement in Psoriasis Area and Severity Index (PASI) Score (PASI90) at Week 16 in Participants Who Received Risankizumab Compared With Placebo (Part A)
Timeframe: Week 16
Percentage of Participants Achieving a Static Physician Global Assessment (sPGA) Score of Clear or Almost Clear at Week 16 in Participants Who Received Risankizumab Compared With Placebo (Part A)
Timeframe: Week 16