SAN DIEGO & INDIANAPOLIS & WALTHAM, Mass.--(BUSINESS WIRE)--Amylin Pharmaceuticals, Inc. (Nasdaq: AMLN), Eli Lilly and Company (NYSE: LLY) and Alkermes, Inc. (Nasdaq: ALKS) today announced results from DURATION-4, the fourth in a series of studies designed to test the superiority of BYDUREON™ (exenatide extended-release for injectable suspension), an investigational type 2 diabetes therapy, as compared to other type 2 diabetes medications.