Subsequently, we examined the co-expression of 25 ICPGs and PPP1R81 in the 33 cancer types and observed marked differences in expression in BLCA, BRCA, CESC, GBM, HNSC, KIRC, KIRP, LGG, LIHC, LUAD, LUSC, PAAD, PRAD, STAD, TGCT, THCA, THYM, and UCEC (Figure 2E). The gene discussed is CDCA2; the disease is glioblastoma.