For example, miR-29a, which was previously reported to inhibit tumorigenicity in non-small cell lung cancer (NSCLC) by downregulating DNA methyltransferase (DNMT)3A and 3B, can suppress YY1 mRNA and protein expression levels in lung tumor cells, resulting in suppressed proliferation and migration [211]. This evidence concerns the gene YY1 and non-small cell lung carcinoma.