Press Releases
November 6, 2007

Alexion to Present at Investor Conferences

CHESHIRE, Conn., Nov 06, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that Leonard Bell, M.D., Chief Executive Officer of Alexion Pharmaceuticals, will present at two upcoming investor conferences, one sponsored by Citigroup Global Markets, Inc. and the other by Credit Suisse.

Dr. Bell will present at Citi Biotech Day in New York at 8:30 a.m. Eastern Time, on Monday, November 12, 2007. Dr. Bell will also present at the Credit Suisse Healthcare Conference in Phoenix at 12:00 p.m., local time (2:00 p.m. Eastern Time) on Tuesday, November 13, 2007.

An audio webcast of Dr. Bell's remarks at the Credit Suisse Healthcare Conference will be available live on Alexion's web site at www.alexionpharm.com. An archived version of the remarks will also be available on the web site for a limited time following the conference.

[ALXN-G]

SOURCE Alexion Pharmaceuticals, Inc.

http://www.alexionpharm.com

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