UCA1 and colorectal carcinoma: As shown in Figure 4, the levels of 7 exolncRNAs (AF079515, AC004854.4, CCAT1, UCA1, LOC100268168, RP4-669L17.4 and HOTTIP) were significantly increased, and RP11-434B12.1 was significantly decreased in CRC recurrence group compared with those in nonrecurrence group, while AK094859 levels showed no significant difference between two groups.