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Doctors study tumors’ genetic makeup to guide cancer treatment
Washington Post

When Jen Morey was diagnosed with colon cancer in June 2013, her oncologist began treating her with a chemotherapy usually prescribed for that type of cancer. But after a couple of months, the malignancy was still growing, and rapidly. The therapy was failing.

So her doctor ordered a test to identify aspects of the tumor’s genetic makeup that might be fueling its growth.

Morey’s oncologist was surprised when the tumor profile test, as the technology is called, showed that the cancerous cells in her colon had a genetic mutation found almost exclusively in breast cancer.

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