Anti‐A and/or anti‐B is not detectable in some patients who underwent ABO‐incompatible bone marrow transplantation

Abstract

Although many hypotheses could be considered to explain the present data, the possibility is proposed that anti-A and/or anti-B in the sera must have been consumed in some patients who underwent ABO-incompatible BMT. This may lead to problems such as difficulty of ABO typing, positive direct antiglobulin tests, and a relatively short life span of red cells.