ANX Mast Therapeutics, Inc.

SAN DIEGO, March 29 /PRNewswire-FirstCall/ -- ADVENTRX Pharmaceuticals, Inc. (AMEX:ANX), a biopharmaceutical research and development company focused on commercializing proprietary product candidates for the treatment of cancer and infectious diseases, announced today that results from preclinical studies of ANX-510 (CoFactor(R)) in combination with intravenous 5-fluorouracil (5-FU) and capecitabine (Xeloda(R)), an oral prodrug of 5-FU, will be presented at the American Association for Cancer Research (AACR) Annual Meeting in Los Angeles, CA. The abstract entitled "Antitumor activity and safety of a hybrid treatment regimen of 5,10-methylenetetrahydrofolate, 5-fluorouracil, and capecitabine in a colorectal tumor xenograft model" will be presented on Tuesday, April 17 at 1:00 p.m. local time. About CoFactor CoFactor (ANX-510) is a folate-based biomodulator drug designed to replace leucovorin as the preferred method to enhance the activity and reduce associated toxicity of the widely used cancer chemotherapy 5-fluorouracil (5-FU). In comparison to leucovorin, CoFactor creates more stable binding of the active form of 5-FU to the target enzyme, thymidylate synthase (TS). CoFactor bypasses the metabolic pathway required by leucovorin to deliver the active form of folate, allowing 5-FU to work more effectively. CoFactor is in Phase 3 and Phase 2b clinical trials for the treatment of metastatic colorectal cancer, as well as in a Phase 2 clinical trial for the treatment of advanced breast cancer. About ADVENTRX Pharmaceuticals ADVENTRX Pharmaceuticals is a biopharmaceutical research and development company focused on commercializing proprietary product candidates for the treatment of cancer and infectious diseases. The Company seeks to improve the performance and safety of existing treatments by addressing significant problems such as drug metabolism, bioavailability, excessive toxicity and treatment resistance. More information can be found on the Company's web site at http://www.adventrx.com/. Forward Looking Statement ADVENTRX cautions you that statements included in this press release that are not a description of historical facts are forward-looking statements that involve risks, uncertainties, assumptions and other factors that, if they do not materialize or prove to be accurate, could cause ADVENTRX's results to differ materially from historical results or those expressed or implied by such forward-looking statements. The potential risks and uncertainties that could cause actual results for our CoFactor studies to differ materially include, but are not limited to: the validity of research results; uncertainties inherent in the drug development process; the timing and success of clinical trials; the receipt of necessary approvals from the FDA and other regulatory agencies; and other risks and uncertainties more fully described in ADVENTRX's press releases and public filings with the Securities and Exchange Commission. ADVENTRX's public filings with the Securities and Exchange Commission are available at http://www.sec.gov/. ADVENTRX does not intend to update any forward-looking statement, including as set forth in this press release, to reflect events or circumstances arising after the date on which it was made. DATASOURCE: ADVENTRX Pharmaceuticals, Inc. CONTACT: Investors, Ioana C. Hone of ADVENTRX Pharmaceuticals, +1-858-552-0866; or Amy Martini of WeissComm Partners, +1-212-301-7223, for ADVENTRX Pharmaceuticals, Inc. Web site: http://www.adventrx.com/ Company News On-Call: http://www.prnewswire.com/gh/cnoc/comp/920134.html

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