Sunesis Pharmaceuticals Presents Clinical Trial Data of Voreloxin in Patients with Acute Myeloid Leukemia and Ovarian Cancer at the Chemotherapy Foundation...( - Voreloxin Demonstrates Promising...),Health

- Voreloxin Demonstrates Promising Clinical Activity in Patients with

Difficult-to-Treat Cancers -

SOUTH SAN FRANCISCO, Calif., Nov. 6 /PRNewswire-FirstCall/ -- Sunesis Pharmaceuticals, Inc. (Nasdaq: SNSS) presented data from three clinical trials of the company's lead drug candidate, voreloxin (formerly SNS-595), at the Chemotherapy Foundation Symposium held in New York on November 4-8. Data previously presented from Phase 1 and Phase 1b/2 studies in patients with acute myeloid leukemia (AML) showed that preliminary clinical responses were observed in the relapsed/refractory AML population and the data supports further clinical development for voreloxin both as a single agent and in combination with cytarabine. Preliminary efficacy results previously presented from an ongoing Phase 2 trial demonstrate single agent activity of voreloxin in advanced platinum-resistant ovarian cancer and that the drug is generally well tolerated in this difficult-to-treat patient population.

"We believe that voreloxin has the potential to change the standard of care in AML and platinum-resistant ovarian cancer and look forward to reporting updated results of our AML trials at ASH," said Daniel Swisher, Chief Executive Officer, Sunesis Pharmaceuticals. "Our goal is to advance voreloxin into a pivotal trial in AML by the end of 2009."

Phase 1 and 1b/2 Studies of Voreloxin in AML

Data presented from a completed Phase 1 dose escalation trial of voreloxin as a single agent in acute leukemias (N=73) showed that single agent voreloxin was generally well tolerated, with the most frequently observed dose limited toxicity (DLT) being reversible grade 3/4 oral mucositis. The researchers concluded that single agent a
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