HSCT is carried out through different steps: mobilization, harvesting, ablative conditioning, and transplantation of aHSCs.156 First, HSCs are collected from the peripheral blood of patients after the mobilization of HSCs from bone marrow using treatment with granulocyte colony-stimulating factor (G-CSF) or GM-CSF with cyclophosphamide to prevent possible MS relapse or worsening of clinical symptoms as a result of G-CSF or GM-CSF administration.156 After 4 or 5 days, cells are harvested by leukapheresis and cryopreserved. This evidence concerns the gene CSF3 and myeloid sarcoma.