KRAS and melanoma: Chan et al. delineated miRNA expression in relation to melanoma subtypes and genetic variants, finding seven miRNAs, such as miR-142-3p and miR-486, significantly correlated with acral versus non-acral melanomas (p < 0.04) and reported a 25% prevalence of the KRAS-variant in non-acral melanomas, with miR-137 significantly underexpressed in these cases.