KCNQ1OT1 and colorectal carcinoma: The patients were divided into a high expression group and a low expression group according to the median value of KCNQ1OT1 expression level, and Kaplan–Meier survival analysis implicated that CRC patients with higher KCNQ1OT1 expression have low survival rate and survival time (P = 0.0226, Fig. 1c).