Study: Some chemo, other treatments may cause cancer spread

04/5/2007 | Reuters

Chemotherapy and other treatments intended to treat cancer tumors may actually cause them to spread, a new study contends, although why that happens is unknown. The chemo drug doxorubicin or radiation on tumors raised TGF-beta levels that helped a breast cancer spread to the lungs, according to tests in mice. Researchers said an antibody used to block TGF-beta halted the process.

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