Press Releases
June 5, 2007

Alexion To Present At The Goldman Sachs 28th Annual Global Healthcare Conference

CHESHIRE, Conn., June 5, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that Dr. Leonard Bell, Chief Executive Officer of Alexion Pharmaceuticals, will present at the Goldman Sachs 28th Annual Global Healthcare Conference in Laguna Niguel, CA at 2:00 p.m., local time (5:00 p.m., eastern) on Tuesday, June 12, 2007.

An audio webcast of Dr. Bell's remarks will be available live. You can access the webcast at: www.alexionpharm.com. An archived version of the remarks will also be available through the Company's web site for a limited time following the conference.

SOURCE Alexion Pharmaceuticals, Inc.

Leonard Bell, M.D., Chief Executive Officer, Alexion Pharmaceuticals, Inc.,
+1-203-272-2596; media, David Patti, Makovsky + Company, +1-212-508-9623; investors,
Rhonda Chiger, Rx Communications Group, LLC, +1-917-322-2569, both for Alexion
Pharmaceuticals, Inc.
http://www.alexionpharm.com

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