CSF3 and graft versus host disease: The non-increased incidence of GVHD might be due to the following two reasons: the percentage of CSA withdrawal reduced from 20% per week in historical group to 10% in the study group; G-CSF-mobilized DLI had a comparative GVL effect but a lower morbidity and mortality of GVHD compared with steady DLI [29-31].