Press Releases
November 22, 2006

Alexion To Present At Piper Jaffray 18th Annual Health Care Conference

Alexion To Present At Piper Jaffray 18th Annual Health Care Conference

CHESHIRE, Conn., Nov. 22 -- Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN - News) today announced that Dr. Leonard Bell, Chief Executive Officer of Alexion Pharmaceuticals, will present at the Piper Jaffray 18th Annual Health Care Conference in New York City at 10:00 a.m. ET on Friday, December 1, 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 An archived version of the remarks will also be available through the Company's web site for a limited time following the conference.