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Bimzelx beats Skyrizi in psoriatic arthritis, raising stakes for AbbVie

UCB’s head-to-head win adds pressure to AbbVie’s post-Humira immunology growth strategy

March 11, 2026 11:34 PM UTC

The rapid growth of AbbVie’s Skyrizi has put it within reach of Humira’s peak sales, but new data from UCB, announced Wednesday, stiffen the competition. 

In a head-to-head Phase III comparing Bimzelx bimekizumab-bkzx from UCB S.A. (Euronext:UCB) and Skyrizi risankizumab-rzaa from AbbVie Inc. (NYSE:ABBV) in adults with active psoriatic arthritis, Bimzelx proved superior on the primary endpoint of ACR50, the American College of Rheumatology’s response criteria for a 50% or greater improvement from baseline for patients in disease metrics such as joint pain and swelling, function, and inflammatory markers. ...