Press Releases
February 21, 2006

ALEXION To Present At The Citigroup 2006 Healthcare Conference

ALEXION To Present At The Citigroup 2006 Healthcare Conference

Cheshire, CT, February 21, 2006 -- Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that Dr. Leonard Bell, Chief Executive Officer of Alexion Pharmaceuticals, will present at the Citigroup 2006 Healthcare Conference in Washington, DC at 4:15 p.m. eastern time on Monday, February 27, 2006.

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 An archived version of the remarks will also be available through the Company's web site for a limited time following the conference.