( REDWOOD CITY Calif. April 16 2007 /...)Threshold Pharmaceuticals Announces Multiple Presentations on,Oncology Pipeline at the 2007 American Association for Cancer,Research (AACR) Annual Meeting,Health

REDWOOD CITY, Calif., April 16, 2007 /PRNewswire-FirstCall/ -- Threshold Pharmaceuticals, Inc. , today announced multiple presentations regarding its oncology pipeline, which includes two preclinical presentations on the Hypoxically Activated Prodrug, TH-302, and two research presentations from Threshold's Tubulin Inhibitor program. The presentations will take place at the 2007 American Association for Cancer Research (AACR) annual meeting being held April 14 - 18, 2007, at the Los Angeles Convention Center in Los Angeles, CA.

The following presentations will take place on Tuesday, April 17, 2007 from 8:00am to 12:00pm:

     Poster 3988: In Vivo Anti-Cancer Efficacy of a Hypoxia Activated Prodrug,

     TH-302

     Poster Session: Angiogenesis Inhibitors


     Poster 3985: Anti-Tumor Activity of a Hypoxia Activated Prodrug, TH-302,

     in Pancreatic and Prostate Orthotopic Models of Cancer

     Poster Session: Angiogenesis Inhibitors


     Poster 3984: A Novel Class of Tubulin Inhibitors that Exhibit Potent

     Antiproliferation and Vascular Targeting Activities

     Poster Session: Angiogenesis Inhibitors


     Poster 3965: 3-Aroylindazoles: Their Synthesis and Potential Use for

     Cancer Treatment

     Poster Session: Drug Discovery Design 1

Copies of the posters will be available on the Threshold website on Tuesday, April 17, 2007 at http://investor.thresholdpharm.com/calendar.cfm.

About Threshold Pharmaceuticals

Threshold is a biotechnology company focused on the discovery and development of small molecule therapeutics for the potential treatment of cancer. By selectively targeting abnormally-proliferating tumor cells, the Company's drug candidates are designed to be potentially more effective and less toxic to healthy tissues than conventional treatments. For additional inf
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