Merck Completes Acquisition of Acceleron Pharma Inc.

KENILWORTH, N.J.-- Merck (NYSE: MRK), known as MSD outside the United States and Canada, today announced the successful completion of the acquisition of Acceleron Pharma Inc. (Nasdaq: XLRN).

“This is an important and strategic opportunity for our company to continue growing our cardiovascular portfolio and pipeline, that builds on our long and proud legacy in cardiovascular disease and further bolsters our business development strategy,” said Rob Davis, chief executive officer and president, Merck. “Fueled by Acceleron’s groundbreaking research, we are excited to explore the opportunities and possibilities ahead to reach even more patients by addressing this critical health need.”

Acceleron is focused on harnessing the power of the transforming growth factor (TGF)-beta superfamily of proteins that is known to play a central role in the regulation of cell growth, differentiation and repair. Acceleron’s lead therapeutic candidate, sotatercept, has a novel mechanism of action with the potential to improve short-term and/or long-term clinical outcomes in patients with pulmonary arterial hypertension (PAH), a progressive and life-threatening blood vessel disorder. Sotatercept is in Phase 3 trials as add-on to current standard of care for the treatment of PAH.

About Merck

For over 130 years, Merck, known as MSD outside of the United States and Canada, has been inventing for life, bringing forward medicines and vaccines for many of the world’s most challenging diseases in pursuit of our mission to save and improve lives. We demonstrate our commitment to patients and population health by increasing access to health care through far-reaching policies, programs and partnerships. Today, Merck continues to be at the forefront of research to prevent and treat diseases that threaten people and animals – including cancer, infectious diseases such as HIV and Ebola, and emerging animal diseases – as we aspire to be the premier research-intensive biopharmaceutical company in the world. For more information, visit www.merck.com and connect with us on Twitter, Facebook, Instagram, YouTube and LinkedIn.