Sanofi Dupixent under USFDA priority review for eosinophilic esophagitis patients
Paris: Sanofi has recently announced that the U.S. Food and Drug Administration (USFDA) has accepted for Priority Review the supplemental Biologics License Application (sBLA) for Dupixent (dupilumab) 300 mg weekly to treat adult and pediatric patients aged 12 years and older with eosinophilic esophagitis (EoE), a chronic and progressive type 2 inflammatory disease that damages the esophagus and impairs the ability to swallow. The target action date for the FDA decision on this investigational use is August 3, 2022.
Dupixent is a fully human monoclonal antibody that inhibits the signaling of the interleukin-4 (IL-4) and interleukin-13 (IL-13) pathways and is not an immunosuppressant. IL-4 and IL-13 are key and central drivers of the type 2 inflammation that plays a major role in atopic dermatitis, asthma and chronic rhinosinusitis with nasal polyposis (CRSwNP).
The sBLA is supported by data from two Phase 3 trials evaluating the efficacy and safety of Dupixent 300 mg weekly in patients aged 12 years and older with EoE (Part A and Part B), and data from an active long-term extension trial. Dupixent 300 mg weekly significantly improved the signs and symptoms of EoE at 24 weeks compared to placebo, including the ability to swallow and reduction in eosinophil count in the esophagus. The safety results of these trials were generally consistent with the known safety profile of Dupixent in its approved indications.
In September 2020, the U.S. FDA granted Breakthrough Therapy designation to Dupixent for the treatment of patients aged 12 years and older with EoE. Dupixent was also granted Orphan Drug designation for the potential treatment of EoE in 2017. Priority review is granted to therapies that have the potential to provide significant improvements in the treatment, diagnosis or prevention of serious conditions. Regulatory filings around the world are also planned in 2022. The potential use of Dupixent in EoE is currently under clinical development, and the safety and efficacy have not been fully evaluated by any regulatory authority.
In the U.S., Dupixent is approved in patients aged 6 years and older with uncontrolled moderate-to-severe atopic dermatitis; as an add-on maintenance treatment of patients aged 6 years and older with moderate-to-severe asthma characterized by an eosinophilic phenotype or with oral corticosteroid-dependent asthma; and for use with other medicines for the maintenance treatment of chronic rhinosinusitis with nasal polyposis (CRSwNP) in adults whose disease is not controlled.
Dupixent is also approved in Europe, Japan and other countries around the world for use in specific patients with moderate-to-severe atopic dermatitis and certain patients with asthma or CRSwNP in different age populations. Dupixent is approved in one or more of these indications in more than 60 countries around the world, and more than 400,000 patients have been treated globally.
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