ADVENTRX Pharmaceuticals Inc. To Present CoFactor Phase II Data At American Society of Clinical Oncology Gastrointestinal Cancer Conference

SAN DIEGO, Jan. 17 /PRNewswire-FirstCall/ -- ADVENTRX Pharmaceuticals, Inc. today announced that it will present time-to-tumor progression, safety and blinded independently-assessed tumor response results from its Phase II multi-center CoFactor(TM) clinical trial at the 2006 Gastrointestinal Cancers Symposium. The clinical trial data will be presented as abstract #461 entitled "5,10-methylenetetrahydrofolic acid with 5-fluorouracil as first line treatment in metastatic colorectal cancer: a phase II study" on Saturday, January 28, 2006, 11:30 am - 1:00 pm. The conference is sponsored in part by the American Society of Clinical Oncology (ASCO) and takes place January 26-28 in San Francisco.

About CoFactor

CoFactor (ANX-510) is a folate-based biomodulator drug being developed to enhance the activity and reduce associated toxicity of the widely used cancer chemotherapeutic 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 chemical pathway required by leucovorin to deliver the active form of folate, allowing 5-FU to work more effectively. This improves 5-FU performance and lowers toxicity. A Phase IIb randomized controlled clinical trial is ongoing to evaluate CoFactor with 5-FU as a first line treatment of metastatic colorectal cancer. The Company has received clearance under a special protocol assessment from the US Food and Drug Administration (FDA) to begin a CoFactor Phase III pivotal clinical trial for metastatic colorectal cancer, which is currently planned to begin patient dosing in Q1 2006.

About ADVENTRX

ADVENTRX Pharmaceuticals is a biopharmaceutical research and development company focused on introducing new technologies for anticancer and antiviral treatments that surpass the performance and safety of existing drugs, by addressing significant problems such as drug metabolism, toxicity, bioavailability and resistance. More information can be found on the Company's Web site at www.adventrx.com.

Forward Looking Statement

This press release contains forward-looking statements, within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, regarding ADVENTRX. Such statements are made based on management's current expectations and beliefs. Actual results may vary from those currently anticipated based upon a number of factors, including uncertainties inherent in the drug development process, the timing and success of clinical trials, the validity of research results, and the receipt of necessary approvals from the FDA and other regulatory agencies. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements regarding ADVENTRX, see the section titled "Risk Factors" in ADVENTRX's last quarterly report on Form 10-Q, as well as other reports that ADVENTRX files from time to time with the Securities and Exchange Commission. All forward-looking statements regarding ADVENTRX are qualified in their entirety by this cautionary statement. ADVENTRX undertakes no obligation to release publicly any revisions, which may be made to reflect events or circumstances after the date hereof.

ADVENTRX Pharmaceuticals, Inc.

CONTACT: Andrea Lynn of ADVENTRX Pharmaceuticals, Inc., +1-858-552-0866

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