This Week in Nature

In this week's Nature Neuroscience, a team of British and Chinese scientists reports on the use of genome-wide association studies to identify existing drugs that may be effective for new indications in psychiatry. By comparing transcriptomes imputed from GWAS data with drug-induced gene expression profiles from the Broad Institute's Connectivity Map cellular signal database, the researchers were able to identify drug candidates for repositioning for seven psychiatric disorders.

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A genome-wide association study that linked common genetic variants to salivary gland carcinoma risk has been retracted, according to Retraction Watch.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