For example, DNA methyl‐transferase 1 (DNMT1) was experimentally validated as a target of miR-148a in gastric cancer cells [197], miR-148b in lung cancer cells [198], and miR-152 in ovarian [199] and liver cancer cells [200], in each of which overexpression of the miRNAs induced tumor suppressive effects. The gene discussed is DNMT1; the disease is gastric cancer.