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Abnormal neutrophil phenotype and neutrophil FcRIII deficiency corrected by bone marrow transplantation

BACKGROUND: Neutrophils from a patient in first remission of acute myeloid leukemia were found to lack NA1 and NA2 alloantigens. This NA null phenotype was converted to the normal phenotype of NA1, NB2 by the transplantation of bone marrow from an HLA‐identical sibling. To investigate the inherited or acquired nature of this rare phenotype, a combination of conventional neutrophil serology and recently developed restriction fragment length polymorphism (RFLP) and polymerase chain reaction (PCR) assays was used.