REDWOOD CITY, Calif., Jan. 24, 2011 (GLOBE NEWSWIRE) -- Threshold Pharmaceuticals, Inc. (Nasdaq:THLD) today announced updated Phase 1/2 clinical trial results related to the Company’s clinical stage hypoxia-activated prodrug, TH-302. The results were presented at the ASCO Gastro Intestinal Cancers Symposium that took place in San Francisco from January 20-22, 2011. Additionally, the Company announced that an ongoing Phase 2, controlled, clinical trial in patients with pancreatic cancer has reached the mid-way point in overall enrollment into the trial.