BACKGROUND: Anti- @entity11126 is usually a clinically insignificant antibody that may complicate a serologic workup. However, it can occasionally cause @entity2142 . We report a rare case of acute @entity2142 caused by anti- @entity11126 . CASE REPORT: A 60-year-old @entity1 with a long history of @entity6130 and @entity417 , blood group A, D+ was found to have an unidentified antibody on serologic workup. He received an A, D+ red blood cell (RBC) unit that was crossmatch compatible by immunoglobulin G indirect antiglobulin test and then experienced an acute hemolytic transfusion reaction with @entity221 , @entity8763 , and @entity810 . The antibody was later identified as an anti- @entity11126 with a wide thermal amplitude. The transfused RBCs were later typed as A(2). The @entity1 was subsequently typed as an A(1) individual. The @entity1 recovered completely from the effects of this reaction and was transfused with A(1) RBCs over the next few days with no adverse effect. CONCLUSION: Anti- @entity11126 , which is usually clinically insignificant and often found in A(1), B, and A(1) B individuals, can, on rare occasions, cause acute hemolytic transfusion reactions, especially when an A(2) unit is transfused to an A(1) @entity1 .

Hemolytic transfusion reaction due to anti- XXXX .

@entity1 :: ('9606', 'Species') :: ['patient', 'man'] @entity11126 :: ('MESH:C565524', 'Disease') :: ['IH'] @entity417 :: ('MESH:D000740', 'Disease') :: ['anemia'] @entity6130 :: ('MESH:D015477', 'Disease') :: ['chronic myelomonocytic leukemia'] @entity8763 :: ('MESH:D006456', 'Disease') :: ['hemoglobinuria'] @entity810 :: ('MESH:D058186', 'Disease') :: ['acute renal failure'] @entity2142 :: ('MESH:D006461', 'Disease') :: ['hemolysis'] @entity221 :: ('MESH:D005334', 'Disease') :: ['fever']
@entity11126 :: (MESH:C565524,Disease) :: ['IH']
