CAMBRIDGE, Mass.--(BUSINESS WIRE)--Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY), a leading RNAi therapeutics company, today announced that management will present a company overview at the Piper Jaffray Second Annual London Health Care Conference on Thursday, June 21, 2007, at 12:20 p.m. BST (7:20 a.m. ET) at the Great Eastern Hotel in London.