May 4, 2005 General News

ACADIA Pharmaceuticals to Announce First Quarter 2005 Financial Results on May 11, 2005

ACADIA to Host Conference Call and Webcast on Wednesday, May 11, 2005 at 4:30 p.m. Eastern Time

SAN DIEGO, May 4, 2005 /PRNewswire-FirstCall via COMTEX/ — ACADIA Pharmaceuticals Inc. (Nasdaq: ACAD), a biopharmaceutical company utilizing innovative technology to fuel drug discovery and clinical development of novel treatments for central nervous system disorders, today announced that it will report its unaudited financial results for the first quarter ended March 31, 2005 on Wednesday, May 11, 2005, after the U.S. financial markets close.

Uli Hacksell, Ph.D., Chief Executive Officer, and Thomas H. Aasen, Vice President and Chief Financial Officer, will host a conference call and webcast on Wednesday, May 11, 2005 at 4:30 p.m. Eastern Time to discuss ACADIA’s financial results and provide an update on the company’s business.

The conference call may be accessed by dialing 866-761-0749 for participants in the U.S. or Canada and 617-614-2707 for international callers (reference passcode 64396418). A telephone replay of the conference call may be accessed through May 25, 2005 by dialing 888-286-8010 for callers in the U.S. or Canada and 617-801-6888 for international callers (reference passcode 89884568). The conference call also will be webcast live on ACADIA’s website, www.acadia-pharm.com, under the investors section and will be archived there until May 25, 2005.

About ACADIA Pharmaceuticals

ACADIA Pharmaceuticals is a biopharmaceutical company utilizing innovative technology to fuel drug discovery and clinical development of novel treatments for central nervous system disorders. ACADIA currently has four drug programs in clinical development as well as a portfolio of preclinical and discovery assets directed at large unmet medical needs, including schizophrenia, Parkinson’s disease, neuropathic pain, and glaucoma. Using its proprietary drug discovery platform, ACADIA has discovered all of the drug candidates in its product pipeline. ACADIA’s corporate headquarters is located in San Diego, California and it maintains research and development operations in both San Diego and Scandinavia.

Contacts:
ACADIA Pharmaceuticals Inc.
Lisa Barthelemy, Director, Investor Relations
Thomas H. Aasen, Vice President and Chief Financial Officer
+1 858-558-2871

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