TMPRSS11D and acute myeloid leukemia: To understand the significance of HAT‐L4 expression in AML, we analyzed HAT‐L4 expression in bone marrow cells from 105 AML patients who underwent chemotherapy (7 days of cytarabine, 100‐200 mg/m2, infusion and 3 days of idarubicin 12 mg/m2).