Bristol Myers Squibb Announces New Prescription Drug User Fee Act Goal Date for Reblozyl® (luspatercept-aamt) Supplemental Biologics License Application

PRINCETON, N.J.– Bristol Myers Squibb (NYSE: BMY) today announced that the U.S. Food and Drug Administration (FDA) has extended the review of the supplemental biologics license application (sBLA) for Reblozyl^® (luspatercept-aamt) for the treatment of anemia in adults with non-transfusion-dependent (NTD) beta thalassemia to June 27, 2022. Reblozyl is being developed and commercialized through a global collaboration with Merck & Co., Inc., known as MSD outside the United States and Canada, following Merck’s acquisition of Acceleron Pharma, Inc. in November 2021.

A written response to an information request was determined by the FDA to constitute a major amendment; therefore the Agency has extended the Prescription Drug User Fee Act (PDUFA) goal date by three months to provide time for a full review of the submission. The sBLA was based on safety and efficacy results from the pivotal Phase 2 BEYOND study evaluating Reblozyl plus best supportive care in adults with NTD beta thalassemia. There is an application (Type II variation) also under review by the European Medicines Agency.

Reblozyl, a first-in-class therapeutic option, is currently approved in the United States and European Union to address transfusion-dependent anemia-associated beta thalassemia and lower-risk myelodysplastic syndromes failing an erythropoietin-stimulating agent (ESA) and requiring red blood cell transfusions.

Reblozyl, a first-in-class therapeutic option, promotes late-stage red blood cell maturation in animal models.¹ Reblozyl is being developed and commercialized through a global collaboration with Merck following Merck’s acquisition of Acceleron Pharma, Inc. in November 2021. Reblozyl is currently approved in the U.S. for the treatment of:

• anemia in adult patients with beta thalassemia who require regular red blood cell transfusions, and
• anemia failing an erythropoiesis stimulating agent and requiring 2 or more red blood cell units over 8 weeks in adult patients with very low- to intermediate-risk myelodysplastic syndrome with ring sideroblasts (MDS-RS) or with myelodysplastic/myeloproliferative neoplasm with ring sideroblasts and thrombocytosis (MDS/MPN-RS-T).

Reblozyl is not indicated for use as a substitute for red blood cell transfusions in patients who require immediate correction of anemia.