A study in humans identified the mir-3667-3p as a biomarker associated with plaque erosion in patients with ST-segment elevation myocardial infarction, based on a previous investigation [Li et al. DOI:10.1016/j.ygeno.2020.11.019]. A study in humans identified 545 differentially expressed microRNAs in blood samples from monozygotic twin pairs, with the mir-3667-3p being one of many miRNAs shared across multiple twin pairs, demonstrating its potential role in distinguishing genetically identical individuals [Xiao et al. DOI:10.1016/j.fsigen.2019.05.003].