Arena Pharmaceuticals, Inc. To Present At The BioCentury Future Leaders In The Biotech Industry Conference On Thursday, March 30, 2006

SAN DIEGO, March 27 /PRNewswire-FirstCall/ -- Arena Pharmaceuticals, Inc. announced today that it will present at the BioCentury Future Leaders in the Biotech Industry Conference on Thursday, March 30, 2006, at 11:30 a.m. Eastern Time (8:30 a.m. Pacific Time) at the Millennium Broadway Hotel in New York City. Dominic P. Behan, Ph.D., Arena’s Senior Vice President and Chief Scientific Officer, will provide a corporate overview and update of Arena and its clinical development and discovery programs.

A live webcast of the presentation will be available under the investor relations section of Arena’s website at http://www.arenapharm.com. Replays of the presentation will be available for 30 days following the event. Please connect to Arena’s website several minutes prior to the start of the broadcast to ensure adequate time for any software download that may be necessary.

Arena Pharmaceuticals(R) and Arena(R) are registered service marks of the company.

Contacts: Jack Lief Carin Canale President and CEO Porter Novelli Life Sciences Media & Investor Relations David Walsey 858.527.3498 Director, Corporate Communications Arena Pharmaceuticals, Inc. 858.453.7200, ext. 1682 www.arenapharm.com

Arena Pharmaceuticals, Inc.

CONTACT: Jack Lief, President and CEO, or David Walsey, Director,Corporate Communications, both of Arena Pharmaceuticals, Inc.,+1-858-453-7200, ext. 1682; or Carin Canale of Porter Novelli LifeSciences, Media & Investor Relations, +1-858-527-3498, for ArenaPharmaceuticals, Inc.

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