Nine (31%) of the 29 patients with post-transplantation hematologic relapse did not accept any therapeutic intervention for relapse, while five (17.24%) patients with AML gained intensive chemotherapy with FLANG (fludarabine + high-dose cytarabine + mitoxantrone + G-CSF) followed by repeated (two-to-five infusions) escalating-dose DLI in combination with or without an HMA. Here, CSF3 is linked to acute myeloid leukemia.