A review of human studies identified 197 miRNAs associated with wound healing, burn wound healing, and scarring, with specific expression patterns in human skin tissue and cells post-burn and in hypertrophic scar tissue [Siu et al. DOI:10.1111/wrr.13100]. A study in humans demonstrated that mir-639, when validated by TaqMan qPCR, exhibited low expression (Cq>30) or was not observed across all tested forensically relevant body fluids, including saliva, semen, venous blood, vaginal secretions, and menstrual blood [Wang et al. DOI:10.1111/1556-4029.12730].