Press Release: EAACI: Dupixent demonstrated superiority over Xolair (omalizumab) in chronic rhinosinusitis with nasal polyps in patients with coexisting asthma in first-ever presented phase 4 head-to-head respiratory study

Core Insights - Dupixent (dupilumab) has demonstrated superiority over Xolair (omalizumab) in treating chronic rhinosinusitis with nasal polyps (CRSwNP) in patients with coexisting asthma, as evidenced by the EVEREST phase 4 study results presented at the EAACI Annual Congress [1][4][6] Study Overview - The EVEREST study involved 360 adults with severe, uncontrolled CRSwNP and coexisting asthma, randomized to receive either Dupixent 300 mg every two weeks or omalizumab based on weight and IgE levels [2][6] - Both treatments were administered alongside mometasone furoate nasal spray [2] Efficacy Results - Dupixent showed a 1.60-point superior reduction in nasal polyp size (p<0.00011) and an 8.0-point superior improvement in the ability to identify different smells (p<0.00011) compared to omalizumab [5] - Other significant improvements included a 0.58-point reduction in nasal congestion (p<0.00011), a 1.74-point reduction in symptom severity (p<0.00011), and a 12.7-point difference in health-related quality of life (p<0.00012) [5] - Asthma-related endpoints also favored Dupixent, with a 150 mL difference in lung function (pre-bronchodilator FEV1; p=0.0032) and a 0.48-point difference in asthma control (p<0.00012) [5] Safety Profile - The safety results were consistent with the known profiles of both medications, with adverse events reported in 64% of Dupixent patients and 67% of omalizumab patients [3][4] - Serious adverse events occurred in 2% of Dupixent patients and 4% of omalizumab patients, while discontinuation due to adverse events was reported in 3% and 1% respectively [3][4] Mechanism of Action - Dupixent targets interleukin-4 (IL-4) and interleukin-13 (IL-13), which are key drivers of type 2 inflammation, reinforcing its efficacy in treating both upper and lower respiratory diseases [4][8] Regulatory Status - Dupixent has received regulatory approvals in over 60 countries for various indications, including CRSwNP, asthma, and other allergic conditions, with more than one million patients currently treated globally [9][10]