CCNE1 and glioblastoma: These results demonstrated that CCNE1 expression was negatively correlated with the infiltration of various types of immune cells in GBM, LUSC, BLCA, TGCT, CESC, SARC, COAD, STAD, SKCM, HNSC, ACC, and PCPG and positively correlated with the infiltration of immune cells in PRAD, LGG, LAML, KICH and UVM (Fig. 8A).