Threshold Announces Webcast of Analyst Event on Sunday, June 1, 2014

SOUTH SAN FRANCISCO, CA--(Marketwired - May 27, 2014) - Threshold Pharmaceuticals, Inc. (NASDAQ: THLD) today announced that the company will webcast its analyst event with clinical experts to be held on Sunday, June 1, 2014, from 6:00 PM to 7:30 PM Central Time at the Four Seasons Hotel Chicago. The event will include presentations highlighting data on TH-302, the company's investigational hypoxia-activated prodrug, to be presented at the 50th Annual Meeting of the American Society of Clinical Oncology (ASCO), taking place May 30 - June 3, 2014, in Chicago, Illinois.

Guest speakers scheduled to give presentations at Threshold's analyst event include clinical experts Dr. Paul G. Richardson, Clinical Program Leader, Director of Clinical Research, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, R.J. Corman Professor of Medicine, Harvard Medical School, Boston, Massachusetts, and Dr. Andrew J. Brenner, Clinical Investigator with the Institute for Drug Development at the Cancer Therapy & Research Center at The University of Texas Health Science Center at San Antonio, Texas. Dr. Richardson is a clinical investigator on Threshold's Phase 1/2 trial of TH-302 in patients with advanced multiple myeloma. Dr. Brenner is the Principal Investigator of a Phase 1/2 Investigator-Sponsored Trial of TH-302 in patients with bevacizumab-refractory glioblastoma.

The event is open to investors and analysts. Threshold invites the public and the media to listen to the presentations via the live webcast, which will be available under Webcasts in the Investors section of www.thresholdpharm.com or can be accessed using the following link: http://psav.adobeconnect.com/thresholdpharmaceuticals/. The presentations are scheduled to begin at approximately 6:15 PM Central Time. A replay of the presentations will be archived on the site for 30 days.

Analyst Event Details:

Date: Sunday, June 1, 2014
Time: 6:00 PM - 7:30 PM Central Time
Location: Four Seasons Hotel Chicago, 120 East Delaware Place, Walton Room

Please RSVP to lhansen@thresholdpharm.com.

TH-302 ASCO Poster Details:

Abstract #2029 (Poster #20): Phase 1/2 study of investigational hypoxia-targeted drug, TH-302, and bevacizumab in recurrent glioblastoma following bevacizumab failure; Poster Highlights Session on Central Nervous System Tumors, 1:00 PM - 4:00 PM Central Time, Friday, May 30, 2014, Room E354b; Discussion follows, 4:30 PM - 5:45 PM, Room E450.

Abstract #8534 (Poster #14): Preliminary safety and efficacy of TH-302, an investigational hypoxia-targeted drug, and dexamethasone in patients with relapsed/refractory multiple myeloma; Poster Highlights Session on Lmyphoma and Plasma Cell Disorders, 1:00 PM - 4:00 PM Central Time, Friday, May 30, 2014, in Room S405; Discussion follows, 4:30 PM - 5:45 PM, Room S406.