XIST can also upregulate the expression of the Polycomb group protein RING1 mRNA via competitive binding with miR-744 and further promote the occurrence and development of non-small cell lung cancer (NSCLC) via the Wnt (Wingless/Integrated)/β-catenin signal pathway (Wang et al., 2019b). This evidence concerns the gene XIST and non-small cell lung carcinoma.