National Cancer Institute researchers report that, in their mouse study, breast cancer gene expression signatures were "consistently predictive" of metastasis. As they report in Cancer Research, the scientists conducted a series of gene expression profiling experiments and saw that the signature is combination of genes expressed in all tissues as well as from the tumor epithelium and somatic mutations.

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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.