UCA1 and cancer: Next, we investigated the UCA1 expression levels in LUAD tissues and normal adjacent tissues through the TCGA database and found that the expression of UCA1 was higher in cancer tissues than in adjacent tissues (http://ualcan.path.uab.edu/cgibin/TCGAExResultNew2.pl?genenam=UCA1&ctype=LUAD, P < 0.001, Fig. 1B).