NEW HAVEN, Conn., March 21 /PRNewswire-FirstCall/ -- Achillion Pharmaceuticals, Inc. (NASDAQ:ACHN) expects to release its results for the fourth quarter and year ended December 31, 2006 after the market closes on Tuesday, March 27, 2007.

The company will host a conference call to discuss the results at 4:30 PM ET on March 27. The call may be joined via telephone by dialing (877) 502-9272 or (913) 981-5581 (for international participants) at least 5 minutes prior to the start of the call. An audio replay will be available through April 21, 2007 by dialing (719) 457-0820 or (888) 203-1112 (international) and using the conference confirmation code 1892814.

A live audio webcast of the call will also be available on the "Investor Relations" section of the company's website, http://www.achillion.com. An archived audio webcast will be available on the Achillion website approximately two hours after the event and will be archived for three months.

About Achillion

Achillion is a biopharmaceutical company focused on the discovery, development and commercialization of innovative treatments for infectious diseases. Achillion is currently developing treatments for HIV infection, chronic hepatitis C infection and serious hospital-based bacterial infections. For more information on Achillion Pharmaceuticals, please visit the company's web site at www.achillion.com or call Achillion at 1-203-624-7000. ACHN-G

    Contact:                           Media:
    Mary Kay Fenton                    Kari Watson
    Achillion Pharmaceuticals, Inc.    MacDougall Biomedical Communications
    Tel. (203) 624-7000                Tel. (508) 647-0209
    mfenton@achillion.com              kwatson@macbiocom.com

Source: Achillion Pharmaceuticals, Inc.