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Association of ABO mismatch with the outcomes of allogeneic hematopoietic cell transplantation for acute leukemia. Am J Hematol 2023 Apr;98(4):608-619



Pubmed ID




Scopus ID

2-s2.0-85146394154 (requires institutional sign-in at Scopus site)


Allogeneic hematopoietic cell transplantation (allo-HCT) is a potentially curative treatment for acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL). While many factors influence the outcomes of allo-HCT, the independent impact of donor-recipient ABO mismatching remains unclear. Using the Center for International Blood and Marrow Transplant Research (CIBMTR) database, we identified patients aged ≥18 years with AML or ALL who underwent allo-HCT between 2008 and 2018. Our objectives were to analyze the outcomes of allo-HCT based on the donor-recipient ABO status (match, minor mismatch, major mismatch, bidirectional mismatch). Among 4946 eligible patients, 2741 patients (55.4%) were ABO matched, 1030 patients (20.8%) had a minor ABO mismatch, 899 patients (18.1%) had a major ABO mismatch, and 276 patients (5.6%) had a bidirectional ABO mismatch. In multivariable analyses, compared to ABO matched allo-HCT, the presence of a major ABO mismatch was associated with worse overall survival (HR 1.16, 95% CI 1.05-1.29; p = 0.005), inferior platelet engraftment (HR 0.83, 95% CI 0.77-0.90; p < 0.001), and higher primary graft failure (HR 1.60, 95% CI 1.12-2.30, p = 0.01). Relapse, acute graft versus host disease (GVHD) grades III-IV and chronic GVHD were not significantly associated with ABO status. While donor age was not significantly associated with outcomes, older recipient age was associated with worse survival and non-relapse mortality. Our study demonstrates that donor-recipient ABO status is independently associated with survival and other post-transplantation outcomes in acute leukemia. This underscores the importance of considering the ABO status in donor selection algorithms and its impact in acute leukemia.

Author List

Guru Murthy GS, Logan BR, Bo-Subait S, Beitinjaneh A, Devine S, Farhadfar N, Gowda L, Hashmi S, Lazarus H, Nathan S, Sharma A, Yared JA, Stefanski HE, Pulsipher MA, Hsu JW, Switzer GE, Panch SR, Shaw BE


Brent R. Logan PhD Director, Professor in the Institute for Health and Equity department at Medical College of Wisconsin
Bronwen E. Shaw MBChB, PhD Center Director, Professor in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Acute Disease
Bone Marrow
Bone Marrow Transplantation
Graft vs Host Disease
Hematopoietic Stem Cell Transplantation
Leukemia, Myeloid, Acute
Precursor Cell Lymphoblastic Leukemia-Lymphoma
Retrospective Studies
Transplantation Conditioning