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Alloimmune neonatal neutropenia linked to anti‐HNA‐4a
Author(s) -
Fung Y. L.,
Pitcher L. A.,
Willett J. E.,
Reed C.,
Mison L.,
Bux J.,
Eiber G.,
Minchinton R. M.
Publication year - 2003
Publication title -
transfusion medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.471
H-Index - 59
eISSN - 1365-3148
pISSN - 0958-7578
DOI - 10.1046/j.1365-3148.2003.00413.x
Subject(s) - neutropenia , antibody , immunology , medicine , respiratory distress , antigen , monoclonal antibody , granulocyte , toxicity , anesthesia
Summary . This is a novel case report of alloimmune neonatal neutropenia (ANN) linked to the neutrophil antibody anti‐HNA‐4a (MART). Since its discovery, the HNA‐4a antigen has never been associated with any clinical neutropenia. A first‐born neonate with respiratory distress was found to be severely neutropenic, because of ANN. The broad reactivity of the antibody together with its capture by CD11b and CD18 in monoclonal antibody immobilization of granulocyte antigen test suggested HNA‐4a specificity. DNA sequencing confirmed that the father is HNA‐4a‐positive and that the mother is HNA‐4a‐negative, supporting the diagnosis of ANN linked to MART.