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In the PNAS Early Edition this week, investigators in Japan show that miR-33, encoded by an intron of Srebp2, regulates HDL cholesterol in vivo. Using miR-33-deficient mice, the team found that "miR-33 repressed the expression of ATP-binding cassette transporter A1 protein, a key regulator of HDL synthesis, by mediating cholesterol efflux from cells to apolipoprotein A-I," they write.

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A small, early-stage trial of a combination therapy for brain cancer reports favorable responses in two patients, according to the Guardian.

Nature News writes that viral genomic surveillance in the US faces systemic issues.

President Joe Biden is seeking an increase in federal spending, including higher budgets for the National Institutes of Health and Centers for Disease Control and Prevention.

In PLOS this week: sex-stratified genome-wide association study of chronic pain, sequencing data from Indigenous Mexican groups, and more.