The expression of 4 methylation transferases (DNMT1, DNMT2, DNMT3A, and DNMT3b) was significantly correlated with Rap1b expression in certain tumor types (UVM, THYM, KICH, KIRP, KIRC, THCA, COAD, DLBC, READ, PRAD, LIHC, UCEC, PCPG, MESO, ACC, CHOL, UCS, LGG, LAML, OV, CESC, PAAD, SKCM, TGCT, HNSC, and BRCA). Here, RAP1B is linked to neoplasm.