By analyzing the above information, we chose a group of miR-124 regulated target genes (PDCD6, ROCK1, SLUG, STAT3, TGF-β, ZEB1), involved in the main biological processes in several common epithelial cancers, including lung, gastric, hepatocellular, breast and ovarian cancer, which is shown in Figure 1. The gene discussed is SNAI2; the disease is ovarian carcinoma.