ACADIA Pharmaceuticals to Announce Second Quarter 2007 Financial Results on August 6, 2007

SAN DIEGO–(BUSINESS WIRE)–July 30, 2007–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 second quarter ended June 30, 2007 on Monday, August 6, 2007, after the U.S. financial markets close. ACADIA’s management will host a conference call and webcast on Monday, August 6, 2007, at 5:00 p.m. Eastern Time to discuss ACADIA’s financial results and development programs.

The conference call may be accessed by dialing 866-831-5605 for participants in the U.S. or Canada and 617-213-8851 for international callers (reference passcode 21628174). A telephone replay of the conference call may be accessed through August 20, 2007 by dialing 888-286-8010 for callers in the U.S. or Canada and 617-801-6888 for international callers (reference passcode 80861306). 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 August 20, 2007.

About ACADIA Pharmaceuticals

ACADIA 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 five mid-to-late stage clinical programs as well as a portfolio of preclinical and discovery assets directed at diseases with large unmet medical needs, including schizophrenia, Parkinson’s disease psychosis, sleep maintenance insomnia, and neuropathic pain. All of the drug candidates in ACADIA’s product pipeline emanate from discoveries made using its proprietary drug discovery platform. ACADIA’s corporate headquarters is located in San Diego, California and it maintains research and development operations in both San Diego and Malmo, Sweden.

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

SOURCE: ACADIA Pharmaceuticals Inc.