Bristol Myers Squibb and Acceleron Pharma Inc, a biopharmaceutical company, announced the US Food and Drug Administration (FDA) has approved Reblozyl (luspatercept-aamt), the first and only erythroid maturation agent (EMA), for the treatment of anemia failing an erythropoiesis stimulating agent and requiring 2 or more red blood cell (RBC) units over 8 weeks in adult patients with very low- to intermediate-risk myelodysplastic syndromes 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 RBC transfusions in patients who require immediate correction of anemia.
“In clinical trials, Reblozyl has shown to have significant benefit for the treatment of anemia in patients with myelodysplastic syndromes who have ring sideroblasts,” said Guillermo Garcia-Manero, M.D, professor and chief of Section of Myelodysplastic Syndromes, Department of Leukemia, University of Texas MD Anderson Cancer Center. “Anemia is a serious consequence of MDS, requiring the majority of these patients to receive regular red blood cell transfusions, which can lead to additional complications, such as iron overload, transfusion site reactions and infections. In our current environment, we are reminded of the significant burden frequent blood transfusions can have on individuals and the healthcare system.”
“This approval of Reblozyl is an important milestone for a majority of patients with myelodysplastic syndromes who have limited treatment options to address anemia associated with their disease. It also demonstrates our continued commitment to develop innovative products that improve the lives of patients living with serious diseases,” said Diane McDowell, M.D., vice president, Hematology Global Medical Affairs, Bristol Myers Squibb. “We are looking forward to making Reblozyl immediately available for this patient population.”
“We’re excited that Reblozyl has been approved to help even more patients in need of treatment options,” said Habib Dable, president and chief executive officer, Acceleron. “We are enormously grateful to the patients, families and caregivers who participated in and supported the Reblozyl clinical trials, and to the researchers at Acceleron and beyond who, more than a decade ago, began this important quest to address patients’ chronic anemias.”
The approval of Reblozyl was based on the findings of MEDALIST, a phase 3, randomized, double blind, placebo-controlled, multi-center study evaluating the efficacy and safety of Reblozyl in patients with IPSS-R-defined very low-, low- and intermediate-risk non-del(5q) myelodysplastic syndromes (MDS) with ring sideroblasts. All patients were red blood cell (RBC) transfusion-dependent and were either refractory or intolerant to prior erythropoiesis-stimulating agent (ESA) therapy or were ESA naïve and unlikely to respond due to endogenous serum erythropoietin =200 U/L, and had no prior treatment with disease modifying agents.
In the trial, a significantly greater proportion of patients receiving Reblozyl achieved independence from RBC transfusions for at least eight weeks during the first 24 weeks of the trial compared with those receiving placebo, meeting the study’s primary endpoint. Additionally, a significantly greater proportion of patients receiving Reblozyl vs. placebo achieved at least 12 weeks of independence from transfusions within the first 24 and 48 weeks of the study.
Myelodysplastic syndromes (MDS) are a group of closely related blood cancers characterized by ineffective production of healthy red blood cells, white blood cells and platelets, which can lead to anemia and frequent or severe infections. People with MDS who develop anemia often require regular blood transfusions to increase the number of healthy red blood cells in circulation. Frequent transfusions are associated with an increased risk of iron overload, transfusion reactions and infections.
Reblozyl, the first and only erythroid maturation agent, promotes late-stage red blood cell maturation in animal models. Bristol Myers Squibb and Acceleron are jointly developing Reblozyl as part of a global collaboration.
Reblozyl is currently approved in the US 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 syndromes with ring sideroblasts (MDS-RS) or with myelodysplastic/ myeloproliferative neoplasm with ring sideroblasts and thrombocytosis (MDS/MPN-RS-T).