For example, Asangani et al. found miRNA-31 was downregulated in melanoma which perhaps act as an outcome of DNA methylation and histone methylation mediated by EZH2; miRNA-31 could inhibit the migration and invasion of melanoma cells, it might play a tumor suppressor role by inhibiting oncogenes SRC, NIK, RAB27a, MET [25]. This evidence concerns the gene MET and melanoma.