Arena Pharmaceuticals, Inc.
Feb 6, 2008

Arena Pharmaceuticals to Present at the BIO CEO & Investor Conference

SAN DIEGO, Feb 06, 2008 /PRNewswire-FirstCall via COMTEX News Network/ -- Arena Pharmaceuticals, Inc. (Nasdaq: ARNA) announced today that the company is scheduled to present at the BIO CEO & Investor Conference on February 12, 2008 at 9:30 a.m. Eastern Time (6:30 a.m. Pacific Time) at the Waldorf=Astoria Hotel in New York City. David A. Walsey, Arena's Director of Corporate Communications, is scheduled to provide an overview of the company, including its clinical development and discovery programs.

A live audio webcast of the presentation will be available under the investor relations section of Arena's website at http://www.arenapharm.com. A replay 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 webcast to ensure adequate time for any software download that may be necessary.

About Arena Pharmaceuticals

Arena is a clinical-stage biopharmaceutical company focused on discovering, developing and commercializing oral drugs in four major therapeutic areas: cardiovascular, central nervous system, inflammatory and metabolic diseases. Arena's most advanced drug candidate, lorcaserin, is being investigated in a Phase 3 clinical trial program for the treatment of obesity. Arena's broad pipeline of novel compounds targeting G protein-coupled receptors, an important class of validated drug targets, includes compounds being evaluated independently and with its partners, Merck & Co., Inc. and Ortho-McNeil Pharmaceutical, Inc.

Arena Pharmaceuticals® and Arena® are registered service marks of the company. "APD" is an abbreviation for Arena Pharmaceuticals Development.

Forward-Looking Statements

Certain statements in this press release are forward-looking statements that involve a number of risks and uncertainties. Such forward-looking statements include statements about Arena's strategy, internal and partnered programs, and ability to develop compounds and commercialize drugs. For such statements, Arena claims the protection of the Private Securities Litigation Reform Act of 1995. Actual events or results may differ materially from Arena's expectations. Factors that could cause actual results to differ materially from the forward-looking statements include, but are not limited to, planned clinical trials and studies may not proceed at the time or in the manner Arena expects or at all, the results of preclinical studies or clinical trials may not be predictive of future results, Arena's ability to partner lorcaserin, APD125, APD791 or other of its compounds or programs, the timing, success and cost of Arena's research, out-licensing endeavors and clinical trials, Arena's ability to obtain additional financing, Arena's ability to obtain and defend its patents, and the timing and receipt of payments and fees, if any, from Arena's collaborators. Additional factors that could cause actual results to differ materially from those stated or implied by Arena's forward-looking statements are disclosed in Arena's filings with the Securities and Exchange Commission. These forward-looking statements represent Arena's judgment as of the time of this release. Arena disclaims any intent or obligation to update these forward-looking statements, other than as may be required under applicable law.

     Contacts:    Jack Lief                                Mary Claire Duch
                  President and CEO                        WeissComm Partners
                                                           Media Relations
                  David Walsey                             212.301.7228
                  Director, Corporate Communications

                  Arena Pharmaceuticals, Inc.
                  858.453.7200, ext. 1682

SOURCE Arena Pharmaceuticals, Inc.