Acceleron, Celgene and Collaborators Announce Two Publications in Nature Medicine Describing Sotatercept and ACE-536

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Celgene Corporation and Acceleron Pharma Inc, announced the publication of two papers available online and in the April issue of the journal Nature Medicine that describe how sotatercept and ACE-536 promote red blood cell formation through an erythropoietin (EPO) independent mechanism in mice. EPO stimulates the proliferation of early-stage red blood cell precursors to form new red blood cells. However, anemias associated with defects in the late-stages of red blood cell formation, known as ineffective erythropoiesis, are resistant to EPO treatment. These studies suggest that sotatercept and ACE-536 may promote and regulate the maturation of late-stage red blood cell precursors and this distinct activity supports the rationale for sotatercept and ACE-536 as potential novel therapies to correct anemia, including the EPO-resistant anemia, in diseases such as beta-thalassemia and myelodysplastic syndromes.

April 1, 2014

Celgene Corporation and Acceleron Pharma Inc, announced the publication of two papers available online and in the April issue of the journal Nature Medicine that describe how sotatercept and ACE-536 promote red blood cell formation through an erythropoietin (EPO) independent mechanism in mice. EPO stimulates the proliferation of early-stage red blood cell precursors to form new red blood cells. However, anemias associated with defects in the late-stages of red blood cell formation, known as ineffective erythropoiesis, are resistant to EPO treatment. These studies suggest that sotatercept and ACE-536 may promote and regulate the maturation of late-stage red blood cell precursors and this distinct activity supports the rationale for sotatercept and ACE-536 as potential novel therapies to correct anemia, including the EPO-resistant anemia, in diseases such as beta-thalassemia and myelodysplastic syndromes.

The two papers provide evidence that at least one TGF-beta superfamily member, GDF-11, reduces the maturation of late-stage red blood cell precursors that can cause anemia. In these models, the mouse versions of sotatercept and ACE-536 block GDF-11, among other ligands, stimulating the maturation of red blood cell precursors and restoring the production of functional red blood cells in mouse models of myelodysplastic syndromes and beta-thalassemia.

“Collectively these two publications reveal a potentially exciting approach to treat a category of red blood cell disorders for which there is significant unmet medical need,” said Rajesh Chopra, M.D., Ph.D., Corporate Vice President Translational and Early Drug Development at Celgene. “We are actively pursuing a broad development program, including clinical trials in patients with MDS and beta-thalassemia, that leverage this understanding to treat patients with diseases that are generally resistant to treatment with existing agents.”

The two papers will be available on the Publications page of the Acceleron website (www.acceleronpharma.com):

  • “TGF-beta superfamily ligand trap ACE-536 corrects anemia by promoting late-stage erythropoiesis” (doi: 10:1038.nm.3512) was authored by Acceleron scientist Rajashekar Suragani and colleagues at Acceleron and Celgene
  • “An activin receptor IIA ligand trap corrects ineffective erythropoiesis in β-thalassemia” (doi: 10:1038.nm.3468) was authored by collaborators Michael Dussiot and colleagues at INSERM and scientists at Celgene

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-β) 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. For more information, please visit www.acceleronpharma.com.

About Celgene

Celgene Corporation, headquartered in Summit, New Jersey, is an integrated global pharmaceutical company engaged primarily in the discovery, development and commercialization of innovative therapies for the treatment of cancer and inflammatory diseases through gene and protein regulation. For more information, please visit www.celgene.com.

Acceleron Pharma Inc.

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