Transfusion medicine (Oxford, England) · 2025
Early alloimmunization in an infant to red cell antigens-Rare but possible in the 'right' circumstances.
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Maddock Anwen, Warrington Sue, Lyver Amanda, Badami Krishna G
Аннотация
BACKGROUND: Red blood cell (RBC) alloimmunization is rarely reported in infants less than 4-6 months of age.
METHODS/MATERIALS: Blood group and antibody screening used the gel card technique. All blood products were leukoreduced. All RBC doses transfused were group O, E-neg, K-neg but the pooled platelets transfused on day 45 and 61 included donors who were K-pos, and that transfused on day 61 also included an E-pos donor.
RESULTS: We report a group O neonate with haemophagocytic lymphohistiocytosis (HLH) who developed alloantibodies to E and K antigens at 65 days (9 weeks) of age.
CONCLUSION: HLH is an inflammatory, 'hyperimmune' state, and alloimmunization is more likely when inflammation is present. If significant inflammation is present, transfusions should be avoided if possible.
METHODS/MATERIALS: Blood group and antibody screening used the gel card technique. All blood products were leukoreduced. All RBC doses transfused were group O, E-neg, K-neg but the pooled platelets transfused on day 45 and 61 included donors who were K-pos, and that transfused on day 61 also included an E-pos donor.
RESULTS: We report a group O neonate with haemophagocytic lymphohistiocytosis (HLH) who developed alloantibodies to E and K antigens at 65 days (9 weeks) of age.
CONCLUSION: HLH is an inflammatory, 'hyperimmune' state, and alloimmunization is more likely when inflammation is present. If significant inflammation is present, transfusions should be avoided if possible.