A 50-year-old male patient with intermediate risk acute myeloid leukemia (AML) in measurable residual disease (MRD) negative, first complete remission (CR) underwent allogeneic-HSCT from a 10/12 (2 HLA-DPB1 antigen mismatched) matched unrelated donor with granulocyte colony-stimulating factor (G-CSF) mobilized peripheral blood stem cell (PBSC) product (Table 1). The gene discussed is HLA-DPB1; the disease is acute myeloid leukemia.