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Acceleron to Host Educational Webcast on Beta-thalassemia

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Acceleron Pharma Inc. (NASDAQ:XLRN) , a clinical stage biopharmaceutical company focused on the discovery, development and commercialization of novel protein therapeutics for cancer and rare diseases, today announced it will host and webcast an online educational seminar on beta-thalassemia with Ellis Neufeld, M.D., Ph.D. Acceleron and its collaboration partner, Celgene, are conducting phase 2 clinical trials of sotatercept and luspatercept in patients with beta-thalassemia, MDS, and end-stage renal disease with mineral and bone disorder.

Dr. Neufeld currently serves as Associate Chief of the Hematology/Oncology Division and Co-Chief of the Clinical Research Center at Boston Childrens Hospital, Director of the Boston Hemophilia Center, and is the Egan Family Foundation Professor of Pediatrics at Harvard Medical School.

Dr. Neufeld will provide an overview of beta-thalassemia including the numerous clinical complications of the disease, current treatment and a review of the recently presented data from the sotatercept and luspatercept phase 2 studies in beta-thalassemia. At the end of the presentation, he will be available to answer questions from webcast participants.

Date: Friday, October 17, 2014
Time: 12:30 PM (EDT)

To access the live webcast, please visit the “Events & Presentations” page in the Investors & Media section on the Company’s website ( To ensure a timely connection, it is recommended that users register at least 15 minutes before the scheduled webcast. To participate by teleconference, please dial 877-312-5848 (domestic) or 253-237-1155 (international) and refer to the Acceleron Seminar on beta-thalassemia. A replay of the webcast will be available on Accelerons website.

About Beta-thalassemia

Beta-thalassemia is an inherited disease involving mutations in the beta globin gene leading to deficient hemoglobin production and serious anemia. In beta-thalassemia patients, there is an over production of red blood cell (RBC) precursors in the bone marrow, often resulting in bone deformities, decreased bone mineral density and bone strength, and pathologic fractures. These abundant RBC precursors fail to properly mature into functional RBCs, which is known as ineffective erythropoiesis. Beyond the severe anemia, many patients also suffer from multiple organ dysfunction, largely due to excess iron deposits, known as “iron overload”, resulting from the ineffective erythropoiesis and the repeated RBC transfusions to address the anemia. Iron overload can lead to heart failure, liver fibrosis, and diabetes, among other consequences. Current clinical management for beta-thalassemia includes regular RBC transfusions and daily iron chelation therapy, which is associated with toxicities. There are no drugs approved to treat beta-thalassemia and healthcare providers have few options for patients.

About Acceleron

Acceleron is a clinical stage biopharmaceutical company focused on the discovery, development and commercialization of novel protein therapeutics for cancer and rare diseases. The company is a leader in understanding the biology of the Transforming Growth Factor-Beta (TGF-) protein superfamily, a large and diverse group of molecules that are key regulators in the growth and repair of tissues throughout the human body, and in targeting these pathways to develop important new medicines. Acceleron has built a highly productive R&D platform that has generated innovative clinical and preclinical protein therapeutic candidates with novel mechanisms of action. These protein therapeutic candidates have the potential to significantly improve clinical outcomes for patients with cancer and rare diseases.

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