CDKN2A and cancer: Furthermore, we used UALCAN to investigate the CDKN2A expression profile and it found CDKN2A upregulated in 21 types of cancers, including BLCA, BRCA, CESC, CHOL, COAD, ESCA, GBM, HNSC, KICH, KIRC, KIRP, LIHC, LUAD, LUAD, LUSC, PAAD, PRAD, READ, SARC, STAD, THCA, and UCES.