| Sunesis Pharmaceuticals to Present Data on SNS-595 and Kinase Inhibitor Programs at the Upcoming AACR-NCI-EORTC International Conference 
 Monday November 7, 8:30 am ET
 
 SOUTH SAN FRANCISCO, Calif., Nov. 7 /PRNewswire-FirstCall/ -- Sunesis Pharmaceuticals, Inc. (Nasdaq: SNSS - News) today announced that it will present scientific and clinical updates through two poster sessions and one oral presentation at the AACR-NCI-EORTC Molecular Targets and Cancer Therapeutics Conference at the Philadelphia Convention Center in Philadelphia, PA, November 14-18, 2005.
 
 -- Sunesis will present the results of a 41 patient Phase I clinical trial of SNS-595, the company's lead novel cancer therapeutic, through a poster titled "Results of a Phase I Trial of SNS-595 in Patients with Advanced Solid Malignancies," at Poster Session B on Wednesday,       November 16.
 
 -- The company will also present data on SNS-595's mechanism of action through a poster titled "CYP450 Inhibition, Induction, Metabolism and Routes of Elimination of SNS-595, a Novel Cell Cycle Inhibitor Currently in Phase I Clinical Trials," at Poster Session C on Thursday,
 November 17.
 
 -- Robert McDowell, Ph.D., VP of Chemistry at Sunesis will present a talk entitled "Discovery of Novel Modular Kinase Inhibitors," at the Structural Approaches to Drug Discovery session on Thursday, November 17.
 
 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 further information on Sunesis Pharmaceuticals, please visit sunesis.com .
 
 Forward-Looking Statements
 
 This press release may contain forward-looking statements that involve substantial risks and uncertainties. Sunesis may not actually achieve the plans, intentions or expectations contained in such forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations contained in such forward-looking statements. Sunesis does not assume any obligation to update any such forward-looking statements.
 
 Source: Sunesis Pharmaceuticals, Inc.
 
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