A study in humans demonstrated that the miR-4287 was identified as a differentially expressed microRNA shared across two pairs of monozygotic twins in blood samples, suggesting its potential role in distinguishing genetically identical individuals [Xiao et al. DOI:10.1016/j.fsigen.2019.05.003]. The investigation, which analyzed miRNA expression profiles via microarray and validated findings with qRT-PCR, confirmed differential expression patterns for selected miRNAs, indicating that such biomarkers could be applicable for forensic identification of monozygotic twins.