The U.S. FDA added hidradenitis suppurativa to the label for UCB SA’s Bimzelx (bimekizumab-bkzx), throwing renewed light on the indication, a chronic disease that causes painful, boil-like lumps that appear under the skin. Regulators cleared the humanized IL-17A and IL-17F antagonist for adults with moderate to severe HS, marking the drug’s fifth approval.