RÉSUMÉ
This study was purposed to investigate the effect of ABO-incompatible allogeneic hematopoietic stem cell transplantation (allo-HSCT) on erythroid lineage hematopoiesis. The changes of ABO group, IgM and IgG antibody in 16 patients received ABO-incompatible allo-HSCT were detected. The results showed that ABO-incompatible allo-HSCT were successfully engrafted in 16 patients, and there was no difference in reconstitution of platelets and neutrophils between ABO-incompatible and ABO-compatible transplantation (p > 0.05). The time of erythroid lineage reconstitution was prolonged (p < 0.05), the disappearance time of isoagglutinins against donor-type RBC in major and bidirectional ABO-incompatible recipients was correlated with the time of erythroid lineage reconstitution. It is concluded that ABO-incompatible allo-HSCT may lead to prolong recovery of erythroid lineage hematopoiesis. Before transplantation, the removal of anti-donor isoagglutinins by plasmapheresis or transfusion of donor's erythrocytes for neutralizing the isoagglutinins against donor's erythrocytes in the recipients may facilitate RBC engraftment and reduce erythrocyte transfusion.