A University of London-led team describes new coding variants associated with a heart trait called cardiac conduction. Using exome-chip-based genotype profiles from nearly 78,000 individuals of European ancestry and nearly 7,700 individuals with African ancestry, the team searched for functional variants contributing to a heart electrical activity measurement known as the QRS interval duration, which provides insights into heart failure or sudden cardiac death.

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Publication of He Jiankui's work on gene-edited infants would raise ethical concerns for journals, Wired and others report.

The New York Times reports that evidence linking trauma in one generation to epigenetic effects that influence subsequent generations may be overstated.

ScienceInsider reports that US National Institutes of Health researchers were told in the fall they could not obtain new human fetal tissue.

In PNAS this week: skin pigmentation evolution among KhoeSan, biomarkers for dengue virus progression, and more.