Researchers led by UCSD's Kang Zhang report that they found a genetic link between the dry form of macular degeneration and a functional variant of the toll-like receptor 3 gene, an immune system gene that triggers apoptosis in response to dsRNA. In their upcoming New England Journal of Medicine article, they say that increased tlr3 activity due to viral dsRNA could lead to more cell death and macular degeneration.

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Direct-to-consumer genetic testing companies have offered to test families separated at the southern US border, but that raises ethical issues.

CNBC reports that confirming a positive result from 23andMe's BRCA health report can be expensive.

The New York Times reports on a project to develop a tree DNA database to uncover illegal logging.

In PLOS this week: links between gut microbiome and colorectal cancer mutations, targeted sequencing uncovers genetic susceptibilities to epilepsy in Koreans, and more.