CCDC137 and adrenal cortex carcinoma: For the association between DNA methylation level and mRNA expression of CCDC137, we found that DNA methylation level was significantly negatively correlated with CCDC137 expression in nine tumor types, including ACC, BRCA, ESCA, HNSC, LUSC, MESO, TGCT, UCS, and Uveal Melanoma (UVM) (Figure 3B).