This Week in PLOS

In PLOS One, a team from Taiwan and Singapore explores the effectiveness of an 18-gene classifier for predicting distant metastasis in individuals with breast cancer. The researchers applied the algorithm — initially established to predict local progression or regional recurrence — to fresh-frozen primary breast tumor samples from 683 individuals with breast cancer, including 101 individuals who experienced metastasis and 583 who were metastases-free.

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The Seattle Times writes that pharmacogenomics testing can help choose medications that may work best for people with depression.

Researchers report that deleting one gene from butterflies affects their wing coloration patterns, according to the Washington Post.

In PNAS this week: genome sequencing of weevil symbionts, retinoid X receptor deletion in lung cancer metastasis, and more.

Sequencing could help combat foodborne illnesses, according to a blog post by Food and Drug Administration officials.