Clinical RationaleTumor hypoxia occurs when a cancerous tumor rapidly outgrows its blood supply, leaving portions of the tumor with regions where the oxygen concentration is significantly lower than in healthy tissues. Several studies have shown that higher levels of tumor hypoxia correlate with poor treatment outcomes for a variety of solid tumors. However, the Company’s first Hypoxia-Activated Prodrug (HAP), TH-302, has the potential to treat slowly dividing tumor cells within hypoxic regions that generally evade traditional chemotherapeutic agents and ultimately contribute to relapse. Translational results in preclinical models demonstrating that TH-302 enhances the antitumor activity of anti-angiogenics provide a rationale for combining TH-302 with anti-angiogenics to increase the treatment benefit in not only the approved indications (RCC, HCC, GIST) but also other indications, such as NSCLC and melanoma. These data were presented at the American Association for Cancer Research (AACR) annual meeting held in April, 2011.
Threshold Pharmaceuticals Initiates Clinical Trial Evaluating TH-302 In Combination With Sunitinib
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