This Week in PNAS

In this week's PNAS Early Edition, researchers at the University of California, Los Angeles, and their collaborators, show that in the absence of GPIHBP1 — a protein found in capillary endothelial cells that "shuttles lipoprotein lipase [LPL] from subendothelial spaces to the capillary lumen" — LPL-mediated triglyceride hydrolysis is blocked, and plasma triglyceride levels are elevated.

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A new study in JAMA finds that genetic tests might not be able to determine what diet is right for someone seeking to lose weight.

A genome-wide association study that linked common genetic variants to salivary gland carcinoma risk has been retracted, according to Retraction Watch.

Vampire bats' ability to live off blood is etched in their genomes and gut microbiomes, the Scientist reports.

In Genome Biology this week: peopling of the Sahara, epigenetic reprogramming analysis of liverwort, and more.