Transfusion efficacy of ABO major-mismatched platelets (PLTs) in children is inferior to that of ABO-identical PLTs

Julmy, Friedgard; Ammann, Roland A; Taleghani, Behrouz Mansouri; Fontana, Stefano; Hirt, Andreas; Leibundgut, Kurt (2009). Transfusion efficacy of ABO major-mismatched platelets (PLTs) in children is inferior to that of ABO-identical PLTs. Transfusion, 49(1), pp. 21-33. Malden, Mass.: Wiley-Blackwell 10.1111/j.1537-2995.2008.01914.x

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BACKGROUND: ABO major compatibility is essential in transfusions of red blood cells but is not requisite in PLT transfusions. In adults there is some evidence that transfusion efficacy of ABO blood group-identical platelets (PLTs) is superior to major-mismatched PLTs. However, in children this question has not been investigated for more than 30 years. STUDY DESIGN AND METHODS: In a prospective study, the efficacy (based on the 1-hour percentage of PLT recovery [PPR(1hr)]) of 400 eligible ABO blood group-identical or out-of-group apheresis PLT concentrates (APCs), transfused mainly prophylactically to 50 children with hematologic malignancies, solid tumors, or aplastic anemia was investigated. The primary objective was to compare PPR(1hr) between ABO-identical and major-mismatched transfusions. RESULTS: After ABO major-mismatched transfusions, PPR(1hr) was significantly lower than after ABO blood group-identical transfusions (median 21% vs. 32%; p = 0.034). Multivariate analysis showed major-mismatched transfusions to be significantly more often unsuccessful than identical transfusions (odds ratio [OR], 3.97; 95% confidence interval [CI], 1.52-10.39; p = 0.005). Using flow cytometry and fluorescent microscopy, it could be demonstrated that PLTs of subgroup A(1), significantly expressing A antigen on their surface, were rapidly cleared from the circulation of group O or B recipients. In contrast, major-mismatched transfusions of A(2) PLTs, expressing no detectable A antigen, were as successful as identical transfusions (OR, 1.13; 95% CI, 0.16-7.88; p = 0.90). CONCLUSION: These data clearly indicate that in children ABO major-mismatched PLT transfusions result in inferior transfusion efficacy, with the only exception of group A(2) PLTs. ABO minor-mismatched PLTs showed comparable efficacy to identical transfusions.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine
04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Haematology and Central Haematological Laboratory

UniBE Contributor:

Ammann, Roland, Mansouri Taleghani, Behrouz, Hirt, Andreas, Leibundgut, Kurt










Anette van Dorland

Date Deposited:

04 Oct 2013 15:03

Last Modified:

05 Dec 2022 14:19

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URI: (FactScience: 104829)

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