In PRAD, LAML, LGG, KICH and UVM, there was a positive association between CCNE1 mRNA expression and TIICs, whereas in GBM, LUSC, BLCA, TGCT, CESC, SARC, COAD, STAD, SKCM, HNSC, ACC, and PCPG, there was a negative correlation. This evidence concerns the gene CCNE1 and glioblastoma.