Bimekizumab was more efficacious than ustekinumab and placebo in the treatment of moderate to severe plaque psoriasis. Previous bimekizumab Phase 2 clinical studies have shown both rapid and durable clinical improvements in skin clearance, as well as a safety profile in line with expectations from this MoA. This study aimed to evaluate the efficacy and safety of bimekizumab in moderate to severe plaque PsO over 1 year compared with both placebo and ustekinumab.