Positive Phase III results for Bimzelx in spondyloarthritis

11 June 2025

Belgian drugmaker UCB (Euronext: UCB) today announced new three-year data from Phase III trials, and their open-label extensions, investigating Bimzelx bimekizumab) in adults with active psoriatic arthritis (PsA) and axial spondyloarthritis (axSpA).

Bimekizumab, a dual inhibitor of interleukin (IL)-17A and IL-17F, showed sustained control of inflammation and deep efficacy in patients living with PsA and axSpA chronic inflammatory diseases with considerable impact on physical and emotional wellbeing.

UCB has previously projected peak sales for Bimzelx to exceed $4 billion, driven by the drug's expanding indications and market presence, and the firm is actively pursuing further indications globally.

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