ABO and digestive system infectious disorder: A high PNI as a continuous variable was associated with an increased OS (HR, 0.91; 95% CI, 0.86–0.97; p = 0.014) and EFS [HR, 0.91; 95% CI, (0.81 ~ 0.96); p = 0.038] after adjusting for age, sex, stem cell sources, type of transplantation, conditioning regimen, ABO match, MNC count, CD34+ cells count, granulocyte implantation time, CMV viremia, EBV viremia, white blood cells, hemoglobin and platelets, total bilirubin, creatinine, pulmonary infection, intestinal infection, febrile neutropenia, aGVHD grade.