Knockdown of lncRNA Xist, which negatively regulates expression of miR-29c and miR-491-5p whose target gene remains unclear, suppressed cell proliferation, invasion, and growth and induces apoptosis in nasopharyngeal carcinoma (Han et al., 2017; Cheng Q. et al., 2018). Here, XIST is linked to nasopharyngeal carcinoma.