KLRB1 and acute myeloid leukemia: The results showed that in 17 tumors such as BRCA, LIHC, LUAD, and STAD, the expression of KLRB1 was positively correlated with TMB, but the opposite was true in acute myeloid leukemia (LAML) and brain lower-grade glioma (LGG) (Figure 4(a)).