Bimekizumab durability of efficacy through 196 weeks and safety through 4 years in patients with moderate to severe plaque psoriasis: Results from the BE BRIGHT open-label extension trial

Background: Patients with moderate to severe psoriasis experience significant burden on quality of life. Long-term management with latest-generation biologics can facilitate sustained complete skin clearance and improved patient well-being. Objective: To report 4-year end-of-study bimekizumab efficacy and safety in patients with moderate to severe psoriasis. Methods: Data were pooled from 3 phase 3 trials (BE VIVID, BE READY, and BE SURE) and their open-label extension (OLE; BE BRIGHT). Efficacy is reported for patients who received bimekizumab continuously from baseline into the OLE. Safety is reported for patients who received ≥1 bimekizumab dose. Results: Seven hundred seventy-one patients received bimekizumab from baseline into the OLE. A high proportion achieved complete skin clearance (100% improvement from baseline in Psoriasis Area and Severity Index) at Week 52 (76.2%) and maintained this to Week 196 (64.7%). The rate of treatment-emergent adverse events over 4 years was 169.8/100 patient-years (N = 1495) and did not increase with longer exposure. The most common treatment-emergent adverse events were nasopharyngitis, oral candidiasis, and upper respiratory tract infection, consistent with bimekizumab's known safety profile. Limitations: Eligibility criteria and ethnic representation. Conclusion: Almost two-thirds of bimekizumab-treated patients achieved and maintained complete skin clearance through 4 years, making bimekizumab an effective, rapid, and durable long-term treatment option.