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Sunesis Pharmaceuticals to Present Data on SNS-595 and Kinase Inhibitor Programs at the Upcoming AACR-NCI-EORTC International Conference

11/07/05

SOUTH SAN FRANCISCO, Calif., Nov 07, 2005 /PRNewswire-FirstCall via COMTEX News Network/ -- Sunesis Pharmaceuticals, Inc. (Nasdaq: SNSS) 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 http://www.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.

investors, Eric Bjerkholt, CFO of Sunesis Pharmaceuticals, Inc., +1-650-266-3717; or
media, Karen L. Bergman or Michelle Corral, +1-650-575-1509 or +1-415-794-8662, both
of BCC Partners, for Sunesis Pharmaceuticals, Inc.
http://www.prnewswire.com

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