Evans syndrome in a pediatric liver transplant recipient with an autoantibody with apparent specificity for the KEL4 (Kpb) antigen

Scott A Koepsell, K. Burright-Hittner, J. D. Landmark

Research output: Contribution to journalArticle

Abstract

Although most warm red blood cell (RBC) autoantibodies react broadly with panel cells in addition to the patient's own RBCs, occasionally an autoantibody with specificity for a specific blood group antigen is encountered. Rare cases of warm autoantibodies with specificity for the Kpb antigen of the Kell blood group system have been described. We report a pediatric transplant recipient with anemia, immune-mediated hemolysis, thrombocytopenia, and a warm autoantibody with apparent anti-Kpb specificity. The patient's autoimmune anemia and thrombocytopenia responded well to discontinuing the immunosuppressant tacrolimus, trans-fusions with Kp(b-) RBCs, and intravenous immunoglobulin therapy, with disappearance of the pathologic antibody. During the autoimmune hemolysis, the patient's RBCs did not react with antisera specific for Kpb. However, repeat testing of the patient's RBCs with Kpb--specific antisera 15 months after the resolution of hemolysis showed reactivity, indicating that the RBC autoantibody was associated with a transient disappearance of the Kpb antigen.

Original languageEnglish (US)
Pages (from-to)14-17
Number of pages4
JournalImmunohematology
Volume30
Issue number1
StatePublished - Jan 1 2014

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Autoantibodies
Pediatrics
Antigens
Hemolysis
Liver
Kell Blood-Group System
Anemia
Immune Sera
Erythrocytes
Passive Immunization
Idiopathic Thrombocytopenic Purpura
Intravenous Immunoglobulins
Tacrolimus
Immunosuppressive Agents
Blood Group Antigens
Thrombocytopenia
Transplant Recipients
Evans Syndrome
Antibodies

Keywords

  • Autoimmune hemolytic anemia
  • Evans syndrome
  • Kell blood group

ASJC Scopus subject areas

  • Immunology and Allergy
  • Hematology

Cite this

Evans syndrome in a pediatric liver transplant recipient with an autoantibody with apparent specificity for the KEL4 (Kpb) antigen. / Koepsell, Scott A; Burright-Hittner, K.; Landmark, J. D.

In: Immunohematology, Vol. 30, No. 1, 01.01.2014, p. 14-17.

Research output: Contribution to journalArticle

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