Sunesis Pharmaceuticals, Inc. Reports Third Quarter 2007 Financial Results

SOUTH SAN FRANCISCO, Calif., Nov. 1 /PRNewswire-FirstCall/ -- Sunesis Pharmaceuticals, Inc. , a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel small molecule therapeutics, today reported financial results for the quarter ended September 30, 2007. Total revenues for the third quarter were $1.8 million, with a net loss of $10.8 million, including a restructuring charge of $1.2 million. As of September 30, 2007, cash, cash equivalents and marketable securities totaled $55.0 million.

Conference Call Information

Sunesis' management will host a conference call to review the results of the quarter and to provide an update on the company's business on Thursday, November 1, 2007 at 10:30 am EDT. Individual and institutional investors can access the call via (888) 297-0358 (U.S. and Canada) or (719) 325-2215 (international). To access the live audio webcast or the subsequent archived recording, visit the "Investors and Media -- Calendar of Events" section of the Sunesis website at http://www.sunesis.com. Please log on to Sunesis' website several minutes prior to the start of the presentation to ensure adequate time for any software download that may be necessary.

About Sunesis Pharmaceuticals

Sunesis is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of novel small molecule therapeutics for oncology and other serious diseases. Sunesis has built a broad product candidate portfolio through internal discovery and in-licensing of novel cancer therapeutics. Sunesis is advancing its product candidates through in-house research and development efforts and strategic collaborations with leading pharmaceutical and biopharmaceutical companies. For additional information on Sunesis Pharmaceuticals, please visit http://www.sunesis.com.

Safe Harbor Statement

This press release contains forward-looking statements including without limitation statements related to the potential efficacy of SNS-595, SNS-032 and SNS-314, planned additional clinical testing and development efforts and the anticipated timing of the commencement and completion of clinical trials and the announcement of clinical results. Words such as "support," "will," "possible," "optimistic," "expects" and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon Sunesis' current expectations. Forward-looking statements involve risks and uncertainties. Sunesis' actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation, the risk that Sunesis' drug discovery and development activities could be halted significantly or delayed for various reasons, the risk that Sunesis' clinical trials for SNS-595, SNS-032 and SNS-314 may not demonstrate safety or efficacy or lead to regulatory approval, risks related to the conduct of Sunesis' clinical trials and manufacturing of SNS-595, SNS-032 and SNS-314 and risks related to Sunesis' need for additional funding. These and other risk factors are discussed under "Risk Factors" and elsewhere in Sunesis' annual report on Form 10-K for the year ended December 31, 2006 and other filings with the Securities and Exchange Commission. Sunesis expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the company's expectations with regard thereto or any change in events, conditions or circumstances on which any such statements are based.

CONTACT: Investors, Eric Bjerkholt, CFO of Sunesis Pharmaceuticals, Inc.,
+1-650-266-3717; or Media, Karen L. Bergman, +1-650-575-1509, or Michelle
Corral, +1-415-794-8662, both of BCC Partners, for Sunesis Pharmaceuticals,
Inc.

Web site: http://www.sunesis.com/

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