This Week in PLoS

Stanford University School of Medicine's Alessandra Chesi and her colleagues define the cellular function of Ypk9 — a non-essential yeast gene whose mutations in its human homolog, ATP13A2/PARK9, have been linked to genetic forms of early onset parkinsonism.

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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.