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Pozelimab (C5 Antibody) BLA for Treatment of Children and Adults with Ultra-rare CHAPLE Disease Accepted for FDA Priority Review
If approved, pozelimab would be the first and only treatment for those living with CHAPLE CHAPLE is an ultra-rare hereditary immune disease that causes
About this update from Regeneron Pharmaceuticals, Inc.
[{"type":"text","content":"If approved, pozelimab would be the first and only treatment for those living with CHAPLE CHAPLE is an ultra-rare hereditary immune disease that causes overactivation of the complement system, leading to potentially life-threatening abdominal and cardiovascular symptoms TARRYTOWN, N.Y., Feb. 21, 2023 (GLOBE NEWSWIRE) -- Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) today announced the U.S. Food and Drug Administration (FDA) has accepted for Priority Review the Biologics License Application (BLA) for pozelimab as a treatment for adults and children as young as 1 year of age with CHAPLE disease (also known as CD55 deficiency with Hyperactivation of complement, Angiopathic thrombosis and Protein Losing Enteropathy or CD55-deficient protein-losing enteropathy). There are currently no approved treatments for CHAPLE, an ultra-rare and life-threatening hereditary immune disease driven by an overactivation of the complement system. Pozelimab is an investigational fully human monoclonal antibody designed to block the activity of complement factor C5, a protein involved in complement system activation. The target action date for the FDA decision is August 20, 2023. Those living with CHAPLE are unable to regulate complement activity due to mutations in the CD55 gene, a protein regulating the body’s complement system which is a mechanism for destroying microbes. Without proper CD55 regulation, the complement system may attack normal cells, causing damage to blood and lymph vessels along the upper digestive tract and leading to the loss of proteins and to blood cells. In most patients, this process results in a range of potentially life-threatening symptoms beginning in infancy, including abdominal pain, bloody diarrhea, vomiting, malnutrition, slow growth, swelling in the legs (edema), recurrent infections, and blood clots. There are fewer than 100 patients worldwide who are known to have CHAPLE. The BLA is supported by results from a Phase 2/3 open-label trial that investigated the efficacy and safety of pozelimab in 10 patients aged 1 year or older. Patients were given a single loading dose of pozelimab 30 mg/kg intravenously on day 1, followed by subcutaneous weekly weight-based doses of pozelimab. At 24 weeks, the co-primary endpoints were achieved with 100% of patients experiencing rapid and sustained normalization of serum albumin (a...