This Week in PNAS

Researchers from Case Western Reserve University report in the early edition of the Proceedings of the National Academy of Sciences this week that they've uncovered mutations linked to colorectal cancer that seem to be specific to African-American patients. The investigators performed exome sequencing on a discovery set of 31 African-American patients with colorectal cancer.

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Researchers test gene therapy targeting a different cancer protein in a new trial, the New York Times reports.

Pennsylvania State University researchers found that salivary microRNAs could predict which kids would have longer concussion symptoms, according to NPR.

The Associated Press reports Alex Azar, the new Department of Health and Human Services secretary nominee, made millions of dollars as a pharmaceutical executive.

In PNAS this week: immune profiling of breast cancer, transposable element patterns in rice, and more.