COPENHAGEN – For patients with active psoriatic arthritis for whom tumor necrosis factor (TNF) inhibitors failed to produce an adequate response, use of the dual interleukin-17 (IL-17) inhibitor bimekizumab (Bimzelx) was associated with significant improvement in joint, skin, and health-related quality-of-life parameters, compared with placebo, reported investigators in the phase 3, double-blind, randomized BE COMPLETE trial.
The primary endpoint, which was the percentage of patients who had 50% improvement in American College of Rheumatology response criteria (ACR50) at 16 weeks, was achieved in 43.4% of patients assigned to receive bimekizumab 160 mg every 4 weeks, compared with 6.8% among patients who received placebo, reported Joseph F. Merola, MD, a dermatologist and rheumatologist at Brigham and Women’s Hospital in Boston.
Neil Osterweil/Medscape
Dr. Joseph F. Merola
“The high-level and exciting take-home [message is] that BE COMPLETE did meet all primary and all ranked secondary endpoints at week 16,” he said at the annual European Congress of Rheumatology.
Also at the congress, Iain McInnes, MD, PhD, of the Institute of Infection, Immunity, and Inflammation at the University of Glasgow, Scotland, presented data from a second phase 3, double-blind, randomized trial called BE OPTIMAL that showed similar benefits for patients with psoriatic arthritis who had not previously received biologic disease-modifying antirheumatic drugs.
Neil Osterweil/Medscape
Dr. Iain McInnes
“This is a new mode of action, inhibiting two cytokines simultaneously,” he said in a late-breaking oral abstract session.
As previously reported by this news organization, use of bimekizumab led to rapid reductions in signs and symptoms of radiographic axial spondyloarthritis in the phase 3 trial called BE MOBILE 2.
Bimekizumab is a monoclonal immunoglobulin G1 antibody that selectively inhibits IL-17A and IL-17F. It is approved in the European Union for treating adults with moderate to severe plaque psoriasis.
BE COMPLETE efficacy
Inclusion criteria comprised adult-onset psoriatic arthritis meeting Classification Criteria for Psoriatic Arthritis (CASPAR) for at least 6 months; tender and swollen joint counts of at least 3/68; one or more active psoriatic lesions; and/or a documented history of psoriasis characterized by intolerance to one or two TNF inhibitors or failure of TNF inhibitors. Patients were randomly assigned in a 2:1 ratio to receive either bimekizumab 160 mg every 4 weeks (n = 267) or placebo (n = 133) for 16 weeks.
Some participants are being followed in the extension BE VITAL study, which will evaluate response to treatment and long-term safety. Patients who do enroll in the extension study will be followed for safety for a period of 20 weeks after the last dose.
As noted before, the trial met its primary endpoint of a significant improvement over placebo in ACR50 (hazard ratio, 11.1; P < .001).
In addition, the trial met all ranked secondary endpoints, including the Health Assessment Questionnaire–Disability Index change from baseline, 90% improvement in the Psoriasis Area and Severity Index (PASI90), Short-Form 36-Item Health Survey, and minimal disease activity (P < .001 for all comparisons).
Improvement with bimekizumab was rapid; curves began to separate from placebo by week 4, Dr. Merola said.