Integration of data in TCGA and GTEx revealed that ZEB1 expression was upregulated in 19 tumors, including DLBC, LGG, PAAD, THYM, and GBM, and was downregulated in 14 tumors, including BLCA, CESC, and COAD, among 33 tumor types. This evidence concerns the gene ZEB1 and glioblastoma.