Acceleron Pharma expands in Cambridge

Acceleron Pharma Inc. has doubled its space in Cambridge, Colliers Meredith & Grew said today.

A Boston real estate firm, Colliers Meredith & Grew said it recently represented Acceleron in two leases totaling nearly 75,000 square feet.

In a new transaction, Acceleron leased all the space at 128 Sidney St. and also agreed to a long-term extension on its existing lease for about 37,000 square feet of space at 149 Sidney St., Colliers Meredith & Grew said.

In a statement, Nancy Sullivan, Acceleron's senior director of operations, said the lease for 128 Sidney St. will "support the company's rapid growth."
(By Chris Reidy, Globe staff)