Press Releases
October 13, 2006

Alexion Pharmaceuticals Invites You to Participate in its Third Quarter Results Conference Call and Web Cast

Alexion Pharmaceuticals Invites You to Participate in its Third Quarter Results Conference Call and Web Cast

CHESHIRE, CT, Oct. 13,2006 -- Alexion Pharmaceuticals (Nasdaq: ALXN - News), today announced that the Company will conduct a conference call and audio web cast on Wednesday, November 1, 2006, at 9:00a.m. Eastern Time (ET), in conjunction with the release of its financial results for the third quarter ended September 30, 2006. Alexion anticipates releasing its financial results at 6:30a.m. ET on Wednesday, November 1, 2006.

To participate in this conference call, dial (719) 457-2680, confirmation code 5789604, shortly before 9:00a.m. ET. A replay of the call will be available from 12:00p.m. ET through a limited time thereafter. The replay number is 719-457-0820, confirmation code 5789604. The audio web cast can be accessed at: www.alexionpharm.com.