RBFOX2 and bladder transitional cell carcinoma: Moreover, DNA methylation was found to be correlated with RBFOX2 expression in most tumors, and RBFOX2 methylation was identified as a protective factor for BLCA, BRCA, CESC, COAD, DLBC, HNSC, LAML, LGG, LUAD, PAAD, SKCM, and THYM.