Frequency of some immunophenotypic antigens inthe total AML sample set were: CD45: 100%, CD33:97.9%, CD38: 95.7%, CD13: 82.6%, HLA-DR: 65.2%,CD117: 63%, CD11b: 60.9%, CD34: 54.3%, CD14:15.2%, CD15: 28.3% GpA: 6.5% and CD19: 8.7%. The gene discussed is ANPEP; the disease is acute myeloid leukemia.