Achillion to Host Second Quarter Investor Conference Call On August 8, 2007


NEW HAVEN, Conn., July 27, 2007 (PRIME NEWSWIRE) -- Achillion Pharmaceuticals Inc. (Nasdaq:ACHN) expects to release its results for the second quarter ended June 30, 2007 after the market closes on Wednesday, August 8, 2007.

The company will host a conference call to discuss the results at 4:30 PM ET on August 8. The call may be joined via telephone by dialing (800) 811-8845 or (913) 981-4905 (for international participants) at least 5 minutes prior to the start of the call. An audio replay will be available through August 13, 2007 by dialing (719) 457-0820 or (888) 203-1112 (international) and using the conference confirmation code 4396186.

A live audio webcast of the call will also be available on the "Investor Relations" section of the company's website, 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.

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