XIST and colorectal cancer: The lncRNA X‐inactive‐specific transcript (XIST) can function as a tumor suppressor gene or oncogene in various cancers (Mao et al., 2018), including hepatocellular carcinoma cell (Kong et al., 2018), non‐small cell lung cancer (Wang et al., 2017), colorectal cancer (Song et al., 2017), esophageal squamous cell carcinoma (Wu et al., 2017), prostate cancer (Alahari, Eastlack, & Alahari, 2016), bladder cancer (Xiong et al., 2017), and so on.