Globenewswire·2025-11-07 13:00Core Insights - Dupixent (dupilumab) has shown significant efficacy in reducing key nasal signs and symptoms in patients aged 6 years and older with allergic fungal rhinosinusitis (AFRS) compared to placebo, as demonstrated in the LIBERTY-AFRS-AIMS Phase 3 trial [1][2][4] - The U.S. FDA has accepted Dupixent's supplemental Biologics License Application (sBLA) for priority review, with a target action date of February 28, 2026, which could make it the first and only approved treatment specifically for AFRS [2][4] - If approved, this would mark Dupixent's ninth FDA-approved indication, expanding its use in various atopic and type 2 inflammatory diseases [2][10] Company Overview - Regeneron Pharmaceuticals, Inc. and Sanofi are jointly developing Dupixent, which is a fully human monoclonal antibody targeting IL-4 and IL-13 pathways, key drivers of type 2 inflammation [9][14] - Dupixent has been approved in over 60 countries for multiple indications, treating more than 1,000,000 patients globally [10][28] - The companies are also exploring Dupixent's efficacy in other type 2 inflammatory diseases, indicating a broad potential market for the drug [15][28] Clinical Trial Details - The LIBERTY-AFRS-AIMS trial was a randomized, double-blind, placebo-controlled study involving 62 patients, which demonstrated significant improvements in sinus opacification, nasal congestion, and nasal polyp size [4][8][11] - Primary endpoint results showed a 50.0% improvement in sinus opacification scores for Dupixent compared to 9.8% for placebo at 52 weeks [5][11] - Secondary endpoints included a 66.7% improvement in patient-reported nasal congestion at 24 weeks and a 60.8% reduction in nasal polyp size at the same time point [11][12] Safety Profile - The safety profile of Dupixent in the trial was consistent with its known profile in other approved indications, with overall adverse event rates of 70% for Dupixent and 79% for placebo [6][7] - Serious adverse events were reported in 0% of Dupixent patients compared to 7% in the placebo group, indicating a favorable safety profile [6][11] Market Implications - The potential approval of Dupixent for AFRS could significantly impact treatment options for patients suffering from this chronic condition, which currently has limited effective therapies [3][4] - The drug's ability to reduce the need for systemic corticosteroids and surgery by 92% highlights its potential to improve patient quality of life and reduce healthcare costs associated with surgical interventions [11][12]