Gene expression profiling tests can help patients avoid unnecessary chemotherapy treatments, but a new study of breast cancer patients in Canada suggests that many patients have a muddled understanding of how these tests work and may be likely to put faith in the results they want to hear.

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The apple has traveled westward and eastward along the Silk Road, according to a new genetic analysis.

In Nature this week: GWAS data used to reposition drugs for psychiatric use, and more.

Genetic disease risk information doesn't always spur people to make healthy lifestyle changes, according to the Associated Press.

A University of California, San Diego-led team has used liquid biopsies to uncover possible treatments for patients with cancers of unknown primary.