CCAT2 and cancer: Well‐known CRC‐associated lncRNAs contain colorectal cancer‐associated lncRNA (CCAL),3 colon cancer‐associated transcript 1 (CCAT1) and colon cancer‐associated transcript 2 (CCAT2).4 Since lncRNAs regulate a subset of genes, and are transcriptionally regulated by a series of transcription factors, targeting these lncRNAs induces a much greater effect on cancer cells than targeting single gene.5 Therefore, exploring the upstream and downstream regulation mechanism of cancer‐associated lncRNAs has been gaining widespread attention.