PCAT6 and colorectal carcinoma: 67 OS-related IR-lncRNAs were screened by univariate cox regression analysis, of which LINC00513, LINC01555, and SNHG16 were the protective factors of CRC, and CATIP-AS1, GABPB1-AS1, PCAT6 and other lncRNAs were the risk factors of CRC (Figure 1D).