KMT2A and acute lymphoblastic leukemia: At diagnosis, the expression of LGALS9 is increased in acute myeloid leukemia (AML), B-ALL, and mixed lineage leukemia (MLL) compared to gene expression levels found in normal peripheral blood mononuclear cells (PBMCs), with samples from patients with B-ALL expressing (on average) the highest LGALS9 levels (Supplementary Fig. 7d).