In a retrospective series of 40 patients, we previously demonstrated that age has no influence on PBSC mobilization and collection in AML; in most patients, PBSCs were collected after consolidation based on continuous sequential infusion of fludarabine and ARAC, followed by granulocyte-colony-stimulating factor with a successful rate over 90% [65]. This evidence concerns the gene CSF3 and acute myeloid leukemia.