A review of human studies identified 197 miRNAs associated with wound healing, burn wound healing, and scarring, with specific miRNAs like the miR-6716-3p showing altered expression in deep partial thickness burn skin compared to normal skin at various post-burn timepoints [Siu et al. DOI:10.1111/wrr.13100]. A systematic review of human studies found that the miR-6716-3p is associated with traffic-related air pollution (TRAP) component exposure, specifically with PM10, PM2.5, black carbon, ultrafine particles, and NO2 in plasma [Kotsyfakis & Patelarou 10.1080/1354750X.2019.1652348].