CAMBRIDGE, Mass--(BUSINESS WIRE)--Epizyme, Inc. (NASDAQ: EPZM), a clinical stage biopharmaceutical company creating novel epigenetic therapeutics for cancer patients, today announced that it intends to offer and sell up to $120,000,000 of shares of its common stock in an underwritten public offering. Epizyme intends to grant the underwriters a 30-day option to purchase up to an additional $18,000,000 of shares of its common stock. All of the shares of common stock to be sold in the offering will be offered by Epizyme.