A study in non-human primates (Macaca mulatta) demonstrated that plasma levels of the miR-33a-3p at or below the median abundance at day 6 post whole-thorax lung irradiation were associated with significantly reduced survival and 100% mortality before 175 days [Rogers et al. DOI:10.1667/RADE-20-00031.1]. A study in mice demonstrated that methamphetamine-induced locomotor sensitization involves significant downregulation of the miR-33a-3p in the nucleus accumbens, alongside dysregulation of miRNA biogenesis factors Ago2 and Dicerl [Liu et al. DOI:10.1111/Adb.12616].