Referring to the individual WHO categories, only the presence of granzyme-B-positive lymphocytes differed among the miscellaneous groups (p = 0.00962), being highest in AML-MRC (mean positive cells 4.5% ± 3.9; versus 1.3% ± 1.5 in AML, NOS, versus 0.5% ± 0.7 in AML with defining mutations, versus 2.5% ± 2.1 in AML with defining translocations). The gene discussed is GZMB; the disease is acute myeloid leukemia.