Release Details

Neurocrine Biosciences, Inc. (Nasdaq: NBIX) announced today that the Company will report first quarter 2005 financial results after the Nasdaq market closes Thursday, April 28, 2005. Neurocrine will also host a live conference call and Webcast to discuss its first quarter financial results and provide a Company update Thursday afternoon, April 28, 2005 at 4:30 PM Eastern Daylight Time (EDT) / 1:30 PM Pacific Daylight Time (PDT). Participants may access the live Conference Call by dialing 1-800-905-0392 (U.S.) or 785-832-1508 (International) and using the Conference ID# NBIX. The call can also be accessed via the Webcast through the Company's website at http://www.neurocrine.com or alternatively through a link provided by PRNewswire at: http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=68817&eventID=1058115

If you are unable to attend the Webcast and would like further information on this announcement please contact Claudia Jones or Elizabeth Foster in the Investor Relations Department at Neurocrine Biosciences at (858) 617-7600. A replay of the Conference Call will be available approximately one hour after the conclusion of the call by dialing 1-800-723-0532 (US) or 402-220-2655 (International) and will be archived until Thursday, May 12, 2005.

Neurocrine Biosciences, Inc. is a product-based biopharmaceutical company focused on neurological and endocrine diseases and disorders. Our product candidates address some of the largest pharmaceutical markets in the world including insomnia, anxiety, depression, diabetes, multiple sclerosis, irritable bowel syndrome, eating disorders, pain, and autoimmunity. Neurocrine Biosciences, Inc. news releases are available through the Company's website via the Internet at http://www.neurocrine.com

SOURCE Neurocrine Biosciences, Inc.

Claudia Jones or Elizabeth Foster, both of Neurocrine Biosciences, Inc.,
+1-858-617-7600