High expression of KCNQ1OT1 was a poor prognostic factor for CRC patients.
(a) Based on TCGA analysis, KCNQ1OT1 was upregulated in CRC samples than that in normal samples. (b) According to the data of TCGA database, the correlation between KCNQ1OT1 expression and overall survival of CRC patients was analyzed with Kaplan Meier method. (c) qRT-PCR determined the expression level of KCNQ1OT1 in CRC cells (HT-29, HCT116, SW480, DLD1) and normal cells (FHC, NCM460). *P < 0.05, **P < 0.01 vs. control group.