The U.S. Food and Drug Administration (FDA) has accepted, for review, the supplemental Biologics License Application (sBLA) for Dupixent (dupilumab) to treat adults and adolescents aged 12 years and older with chronic spontaneous urticaria (CSU) that is not adequately controlled with the current standard of care, H1 antihistamine treatment. The target action date for the FDA decision is October 22, 2023.
CSU is an inflammatory skin condition driven in part by type 2 inflammation, which causes sudden and debilitating hives and swelling on the skin. Swelling, called angioedema, may occur most commonly on the face, hands and feet, but can also affect the throat and upper airways. CSU is typically treated with H1 antihistamines, medicines that target histamine-1 receptors on cells to control symptoms of urticaria. However, the disease remains uncontrolled in up to 50% of patients, who are left with limited alternative treatment options. These individuals continue to experience symptoms, including persistent itch or burning sensations that can be debilitating and significantly impact quality of life.
The sBLA is supported by data from two Phase 3 trials (LIBERTY-CUPID Studies A and B), evaluating Dupixent in two different patient populations with uncontrolled CSU. Study A was conducted in CSU patients who were uncontrolled on standard-of-care antihistamines with efficacy and safety data supporting the submission, while Study B was conducted in CSU patients who were uncontrolled on standard-of-care antihistamines and refractory to omalizumab with results providing additional supporting data.
The potential use of Dupixent in CSU is currently under clinical development, and the safety and efficacy have not been fully evaluated by any regulatory authority.