ABO Incompatible Living Donor Liver Transplantation in Children: A Single Centre Experience from India

Abstract

BackgroundIn recent years, pediatric ABO incompatible (ABOi) living donor liver transplant (LT) has shown promising outcomes and can potentially eliminate organ shortage. This study aims to report pediatric ABOi LT experience including short- and long-term outcomes. MethodsIt is a single-centre retrospective study. Out of 108 LTs, 20 were done in children. We compared the outcomes between ABOi (n=20) and non-ABOi (n=220) pediatric living donor liver transplantation (LDLT) performed during the study period. All the children received pre-LT desensitization therapy comprising rituximab and plasmapheresis targeting pre-LT isohemagglutinin (IHA) titres of ≤1:16. ResultsOut of 239 pediatric LDLT from 2017-2022, 19 children (11 females) underwent 20 ABOi LT (including one retransplant with ABOi domino allograft) at a median age of 12(12,51) months with majority being biliary atresia (60%). The median change in CD19 cell%, CD20 cell%, and IHA titres after rituximab from day -14 to day -1 (before LT) was satisfactory. In the first 3 months following LT, acute cellular rejection, culture proven sepsis, biliary and vascular complications were seen in 10%, 20%, 20%, and 15% respectively. None of the ABOi LT recipients developed antibody mediated rejection. ABOi LT recipients as compared to non ABOi LT had higher incidence of bile leak and prolonged hospital stay with rest of the complications including biliary strictures and long-term outcome being comparable. At a median follow up of 21(14,33) months, 4 children expired (21%). ConclusionABOi LT in children shows excellent outcomes and can be performed safely with prior desensitization when compatible liver is unavailable.