DPP9 and acute myeloid leukemia: Small-molecule inhibitors of the serine dipeptidases DPP8 and DPP9 (DPP8/9) activated CARD8 and caspase-1 to trigger pyroptosis in the majority of human acute myeloid leukemia (AML) [85] (Table 2), indicating the protein CARD8 could be a novel therapeutic target for AML.