Celgene Corporation and Acceleron Pharma Announce Results of the Phase 3 MEDALIST Trial Evaluating Luspatercept in Patients with Myelodysplastic Syndromes at the ASH 2018 Plenary Session
Pivotal phase 3 data demonstrated treatment with investigational luspatercept resulted in statistically significant increased red blood cell transfusion independence compared to placebo
Regulatory submissions planned in
“Severe anemia resulting in red blood cell transfusion dependence is a significant challenge for patients with low- and intermediate-risk MDS. Those who become resistant or refractory to currently available treatments have limited alternatives,” said Dr. List, President and CEO of
MEDALIST met the primary endpoint of red blood cell transfusion independence (RBC-TI) for 8 or more weeks during the first 24 weeks of the study. Treatment with luspatercept resulted in a statistically significantly greater proportion of patients achieving RBC-TI ≥ 8 weeks compared to placebo. The study also found in secondary endpoints that treatment with luspatercept resulted in a statistically significant higher percentage of patients achieving RBC-TI of 12 or more weeks in the first 24 or 48 weeks of the study, as well as hematologic improvement-erythroid (HI-E) of 8 or more weeks.
|RBC-TI ≥8 weeks (weeks 1-24)||37.9||% (58/153)||13.2||% (10/76)||< 0.0001|
|RBC-TI ≥12 weeks (weeks 1-24)||28.1||% (43/153)||7.9||% (6/76)||0.0002|
|RBC-TI ≥12 weeks (weeks 1-48)||33.3||% (51/153)||11.8||% (9/76)||0.0003|
|HI-E ≥ 8 weeks (IWG 2006, weeks 1-24)||52.9||% (81/153)||11.8||% (9/76)||< 0.0001|
MEDALIST Safety Summary
Treatment-emergent adverse events (TEAEs) of Grade 3 or 4 were reported in 42.5% (65/153) of patients receiving luspatercept and 44.7% (34/76) of patients receiving placebo. Progression to acute myeloid leukemia (AML) occurred in four patients, three patients (2.0%) receiving luspatercept and one patient (1.3%) receiving placebo. Five patients receiving luspatercept (3.3%) and four patients receiving placebo (5.3%) experienced one or more TEAE that resulted in death.
Most common TEAEs of any Grade in Greater than 10% of Patients in Either Arm
“The MEDALIST results demonstrate the potential clinical benefit of luspatercept in achieving red blood cell transfusion independence in patients with low-to-intermediate risk RS+ MDS, an area in need of new treatments,” said
“It’s truly an honor to showcase the results from the MEDALIST trial as the first presentation of the ASH Plenary Session,” said Habib Dable, President and Chief Executive Officer of Acceleron. “The results from the MEDALIST trial increase our confidence in the potential of luspatercept to provide a meaningful treatment option for patients suffering from lower-risk RS+ MDS worldwide. We’re excited to continue our clinical development program in MDS, beta-thalassemia, and myelofibrosis, while also exploring additional applications for luspatercept in a range of diseases associated with anemia.”
Luspatercept is not approved in any region for any indication. The companies are planning regulatory application submissions of luspatercept in
MEDALIST is a phase 3, randomized, double blind, placebo-controlled, multi-center study evaluating the safety and efficacy of luspatercept in patients with very low-, low-, or intermediate-risk non-del(5q) myelodysplastic syndromes (MDS). All patients were
Luspatercept is a first-in-class erythroid maturation agent (EMA) that is believed to regulate late-stage red blood cell maturation. Acceleron and Celgene are jointly developing luspatercept as part of a global collaboration. Phase 3 clinical trials continue to evaluate the safety and efficacy of luspatercept in patients with MDS (the MEDALIST trial) and in patients with beta-thalassemia (the BELIEVE trial). The COMMANDS phase 3 trial in first-line, lower-risk, MDS patients, the BEYOND phase 2 trial in non-transfusion-dependent beta-thalassemia, and a phase 2 trial in myelofibrosis are ongoing. For more information, please visit www.clinicaltrials.gov.
Acceleron is a
Acceleron focuses its research and development efforts in hematologic, neuromuscular, and pulmonary diseases. In hematology, the Company and its global collaboration partner,
This press release contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. Such forward-looking statements include those regarding the potential benefits of, and plans relating to the collaboration between Acceleron and Celgene; the potential of luspatercept as a therapeutic drug; and the benefit of each company’s strategic plans and focus. The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “project,” “will,” “would,” “could,” “potential,” “possible,” “hope” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Such statements are subject to numerous important factors, risks and uncertainties that may cause actual events or results to differ materially from current expectations and beliefs. For example, there can be no guarantee that any product candidate will be successfully developed or complete necessary preclinical and clinical phases, that the results of any clinical study will be predictive for other clinical studies of the same product candidate, or that development of any of product candidates will successfully continue. There can be no guarantee that any positive developments will result in stock price appreciation. Management's expectations and, therefore, any forward-looking statements in this press release could also be affected by risks and uncertainties relating to a number of other important factors, including: results of clinical trials and preclinical studies, including subsequent analysis of existing data and new data received from ongoing and future studies; the content and timing of decisions made by the U.S. FDA and other regulatory authorities, investigational review boards at clinical trial sites and publication review bodies; the ability to obtain and maintain requisite regulatory approvals and to enroll patients in planned clinical trials; unplanned cash requirements and expenditures; competitive factors; the ability to obtain, maintain and enforce patent and other intellectual property protection for any product candidates ; the ability to maintain key collaborations; and general economic and market conditions. These and other risks are described in greater detail under the caption "Risk Factors" included in each company’s public filings with the
Hyperlinks are provided as a convenience and for informational purposes only. Neither Celgene nor Acceleron bears responsibility for the security or content of external websites or websites outside of their respective control.
Acceleron Pharma Inc.
Todd James, IRC, (617) 649-9393
Vice President, Investor Relations and Corporate Communications
Candice Ellis, (617) 649-9226
Manager, Investor Relations and Corporate Communications
Matt Fearer, (617) 301-9557
Director, Corporate Communications