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Clinical Trial Summary

The purpose of this study is to determine whether TH-302 in combination with Doxorubicin is safe and effective in the treatment of Advanced Soft Tissue Sarcoma.


Clinical Trial Description

A broad range of tumors have been shown to contain significant numbers of hypoxic cells and hypoxia has been shown to be associated with a poor prognosis and an increase in resistance to chemotherapy and radiotherapy (Brizel 1997, Vaupel 2007, Shannon 2003).

It is likely that an agent that could effectively target hypoxic regions in tumors would improve efficacy when combined with standard chemotherapy or radiotherapy. TH-302 is activated at lower oxygen concentrations than other bioreductive prodrugs (Duan 2008) and tirapazamine, a hypoxic cytotoxin that has been extensively studied in both preclinical and clinical studies. This should result in an improved therapeutic ratio (tumor vs normal tissue toxicity) as compared with other bioreductive agents. Because TH-302 is expected to be minimally toxic to aerobic cancer cells, optimal efficacy would be expected when TH-302 is combined with treatments that are most effective under aerobic conditions such as radiotherapy and cytotoxic chemotherapy. Preclinical data have shown at least additive efficacy when TH-302 is combined with chemotherapy. In order to minimize the risk of additive toxicity, TH-302 is not being evaluated in combination with alkylating agents. The study will enroll subjects with advanced soft tissue sarcoma. These tumors have evidence supporting the presence of hypoxia based on pO2 histography, F-MISO and gene expression profiling (Vaupel 2007, Francis 2007, Rajendran 2003). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT00742963
Study type Interventional
Source Threshold Pharmaceuticals
Contact
Status Completed
Phase Phase 1/Phase 2
Start date August 2008
Completion date October 2013

See also
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