Globenewswire·2025-11-07 13:00Core Insights - Sanofi and Regeneron's Dupixent has shown positive results in the LIBERTY-AFRS-AIMS phase 3 study for allergic fungal rhinosinusitis (AFRS), meeting all primary and secondary endpoints [1][5] - The FDA has accepted the supplemental biologics license application (sBLA) for Dupixent in treating AFRS, which could become its ninth approved indication [2][5] Study Results - The LIBERTY-AFRS-AIMS study demonstrated a 50.0% improvement in sinus opacification scores for Dupixent compared to 9.8% for placebo at 52 weeks [4][12] - Patient-reported nasal congestion improved by 66.7% at 24 weeks and 80.6% at 52 weeks in the Dupixent group compared to 25.3% and 11.1% in the placebo group, respectively [4][12] - Nasal polyp size reduced by 60.8% at 24 weeks and 62.5% at 52 weeks in the Dupixent group compared to 15.2% and 3.6% in the placebo group [12] Safety Profile - The overall rates of adverse events were 70% for Dupixent and 79% for placebo, with serious adverse events reported in 0% of Dupixent patients compared to 7% for placebo [6] - Common treatment-emergent adverse events included COVID-19 (15% Dupixent, 14% placebo) and nosebleed (12% Dupixent, 4% placebo) [6] Disease Background - AFRS is a chronic type 2 inflammatory disease of the sinuses caused by allergic hypersensitivity to fungi, primarily affecting individuals in warm, humid climates [3][5] - Current treatment options are limited, often involving surgery and prolonged systemic steroids, with a high rate of disease recurrence [3][4] Regulatory and Market Implications - If approved, Dupixent would be the first and only medicine specifically indicated for AFRS, enhancing its market position [2][5] - The study results provide strong evidence that IL4 and IL13 are key drivers of type 2 inflammation in AFRS, aligning with findings in other related diseases [4][12]