Cambridge, Mass.-based Acceleron Pharma Inc. has raised $30 million in financing. The company said that strategic partner Celgene contributed to the round, along with “all other existing investors.” Acceleron has raised capital from Advanced Technology Ventures, Alkermes, Avalon Ventures, Bessemer Ventures, Celgene, Flagship Ventures, MPM BioEquities, OrbiMed Advisors, Polaris Ventures, QVT Financial, Sutter Hill Ventures and Venrock. The new funds will be used to expand the company’s clinical stage pipeline.

Celgene Corp. (Nasdaq: CELG) has agreed to acquire Gloucester Pharmaceuticals, a Cambridge, Mass.-based developer of oncology drugs. The deal is valued at up to $640 million, including a $340 million up-front cash payment and up to $300 million in earn-outs. Gloucester Pharma had raised over $130 million in VC funding, from firms like Apple Tree Partners, Novo AS, ProQuest Investments, Prospect Venture Partners and Rho Ventures.