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Objectives To determine the genetic background underlying the Pk phenotype in two Thai sisters suffering from multiple spontaneous abortions. Background The P antigen is carried by globoside, an abundant glycosphingolipid in the red blood cell (RBC) membrane. Inactivating mutations in the 3‐β‐N‐acetylgalactosaminyltransferase gene (B3GALNT1) give rise to the rare Pk phenotype, which lack the P and PX2 antigens.
ABO-incompatible haematopoietic stem cell transplantation (HSCT) presents a challenge to blood component transfusion. The aim of this study was to investigate the weak blood group A or B antigen expression by donor-derived group O red blood cells (RBC) observed following transfusion or minor ABO-incompatible HSCT. In addition, in vitro experiments were performed to elucidate possible mechanisms underlying this phenomenon.
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