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 An archived version of the remarks will also be available through the Company's web site for a limited time following the conference.