An international team of researchers claim to have identified and genealogically traced a rare deletion mutation linked to hereditary nonpolyposis colon cancer. The mutation predisposes individuals to cancers of the colon, endometrium, and ovaries.

The team said that the deletion in the MSH2 gene “apparently” came to the United States more than 250 years ago, “and it may be responsible for a sizeable portion of certain hereditary cancers in Americans.”

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Helix customers can purchase apps that interpret different aspects of their genome, Technology Review reports.

The New York Times reports that a number of companies and research institutes are pursuing gene therapies.

Salmon with shorter telomeres survive to make the trip back to their river homes, New Scientist reports.

In PLOS this week: vaginal microbiome composition, population patterns of Chagas-carrying Rhodnius ecuadoriensis, and more.