Why Mapping Your Tumor's Genes Isn't Enough To Guide Cancer Treatment

April 16, 2015 3:11 PM

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Why Mapping Your Tumor's Genes Isn't Enough To Guide Cancer Treatment

WASHINGTON (AP) — More cancer patients are getting the genes in their tumors mapped to help guide their treatment. New research suggests that isn't always accurate enough, and a second test could help ferret out the culprit genes.

Cancer involves two sets of genetic code — your own and your tumor's. A study published Wednesday found that mapping only the tumor's genome could provide misleading results and lead to treatment that's less likely to work.

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