TSPAN1 and colorectal carcinoma: Both miR-638 and TSPAN1 expression data were available for a total of 103 paired tumors and NCTs, and the results showed that the protein levels of TAPAN1 in the CRC tissues were inversely correlated with the miR-638 levels (Spearman r = −0.341, p < 0.0001; Figure 4C), suggesting that the increased TSPAN1 expression in CRC might due to miR-638 underexpression.