ADVENTRX Announces Completion of Patient Enrollment in Phase 2 Clinical Trial of CoFactor(R) for the Treatment of Advanced Bre...(r is the mostfrequently diagnosed cancer...),Health

Date:12/5/2007

r is the most frequently diagnosed cancer in American women and the second leading cause of cancer-related deaths in women after lung cancer. Over 214,000 new cases of breast cancer and over 41,000 deaths from breast cancer are expected in the U.S. in 2006. Despite advances made in treatment options that have led to a significant increase in survival and quality of life, metastatic disease is still incurable. Five-year survival rates decrease with advancing disease stage: from 98% in localized disease to 80% with regional spreading to only 26% with metastatic disease.

About ANX-510, or CoFactor

CoFactor 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 chemotherapeutic agent 5-FU. Compared 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, potentially allowing 5-FU to work more effectively.

In October 2007, ADVENTRX announced the results from its Phase 2b clinical trial of CoFactor for the treatment of metastatic colorectal cancer. The CoFactor/5-FU arm did not demonstrate statistically significant improved safety in the trial's primary endpoint, a reduction in the proportion of patients reporting at least one hematological or gastrointestinal adverse event of grade 3 or greater. Further analysis of the Phase 2b study, in which 5-FU was administered by infusion, has uncovered no significant differences between the study arms with regard to either efficacy or safety. In November 2007, ADVENTRX announced that it would discontinue enrolling patients in its Phase 3 clinical trial of CoFactor for the first-line treatment of metastatic colorectal cancer.

About ADVENTRX Pharmaceuticals

ADVENTRX Pharmaceuticals is a biopharmaceutical research an
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SOURCE ADVENTRX Pharmaceuticals, Inc. Copyright©2007 PR Newswire. All rights reserved

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