UCB's Bimzelx (bimekizumab-bkzx) approved by FDA for moderate-to-severe hidradenitis suppurativa (HS), a chronic inflammatory skin disease affecting 1% of the US population, more common in women. Bimzelx, also approved for other autoimmune conditions, selectively binds to inflammatory cytokines, reducing HS symptoms by 50% within 16 weeks in phase 3 studies. Administered subcutaneously, it offers a new treatment option with common side effects including upper respiratory tract infections, oral candidiasis, and headache. List price is $7,552.80 per 1 mL, but insurance coverage can reduce costs significantly.