CHESHIRE, Ct.--(BUSINESS WIRE)--Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN), today announced that the Company will report its financial results for the first quarter ended March 31, 2010 on Thursday, April 22, 2010 before the financial markets open. Following the release of the financial results, Alexion management will conduct a conference call and audio web cast on Thursday, April 22, 2010, at 10:00 a.m. Eastern Time (ET).