KLRB1 and glioblastoma: Consistent high expression level of KLRB1 mRNA were observed in tumor samples of BRCA, CHOL, COAD, ESCA, GBM, HNSC, KIRH, KIRC, LGG, LIHC, LUAD, LUSC, STAD, and THCA than normal tissue based on both comparisons (Figure 1A).