Press Releases
June 13, 2007 at 12:00 AM EDT

Alexion to Present at the William Blair 27th Annual Growth Stock Conference

CHESHIRE, Conn., June 13, 2007 /PRNewswire via COMTEX News Network/ -- CHESHIRE, Conn., June 13 /PRNewswire-FirstCall/-- Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that Vikas Sinha, Senior Vice President and Chief Financial Officer of Alexion Pharmaceuticals, will present at the William Blair 27th Annual Growth Stock Conference in Chicago at 3:00 p.m., local time (4:00 p.m., eastern) on Wednesday, June 20, 2007.

An audio webcast of Mr. Sinha'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 An archived version of the remarks will also be available through the Company's web site for a limited time following the conference.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, +1-917- 322-2569, both for Alexion Pharmaceuticals,
Inc.
http://www.alexionpharm.com

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