Press Release: Sanofi and Regeneron's Dupixent approved as the first targeted medicine in the EU in over a decade for chronic spontaneous urticaria

Core Insights - The European Commission has approved Dupixent (dupilumab) as the first targeted treatment for moderate-to-severe chronic spontaneous urticaria (CSU) in over a decade, providing a new option for patients aged 12 and older who have not responded adequately to antihistamines [1][4][5] Group 1: Approval and Clinical Data - Dupixent is approved for adult and adolescent patients with CSU who have inadequate response to histamine-1 antihistamines and are naive to anti-immunoglobulin-E therapy [1][4] - The approval is based on two phase 3 clinical studies (LIBERTY-CUPID program) demonstrating significant reductions in urticaria activity, itch, and hive severity compared to placebo at 24 weeks [2][7][8] - In the EU, approximately 270,000 individuals aged 12 and older suffer from CSU that remains symptomatic despite standard antihistamine treatment [5][6] Group 2: Efficacy and Safety - Dupixent significantly reduced symptoms of CSU, leading to more patients achieving well-controlled disease or complete response compared to placebo in the studies [2][3] - The most common adverse reactions associated with Dupixent include injection site reactions, conjunctivitis, and arthralgia, with safety results consistent with its known profile [3][10] Group 3: Mechanism and Broader Impact - Dupixent works by inhibiting interleukin-4 (IL4) and interleukin-13 (IL13), which are key drivers of type 2 inflammation, offering a new approach for treating CSU [4][10] - Beyond the EU, Dupixent is also approved for CSU in several countries, including the US and Japan, and is indicated for multiple chronic inflammatory diseases [4][11]