JOURNAL ARTICLE
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Life-threatening delayed hyperhemolytic transfusion reaction in a patient with sickle cell disease: effective treatment with eculizumab followed by rituximab.

Transfusion 2015 October
BACKGROUND: Hyperhemolysis in sickle cell disease is a rare and potentially life-threatening complication of transfusion.

STUDY DESIGN AND METHODS: In this article we report a case of delayed hemolytic transfusion reaction with resultant hyperhemolysis triggered by an anti-IH autoantibody with alloantibody behavior.

RESULTS: The anti-IH was reactive at room temperature as well as 37 °C, but only weakly reactive with autologous red blood cells. Initial cold agglutinin titer was 512. The profound, life-threatening, intravascular hemolysis was rapidly and dramatically reduced with the Complement 5 (C5) inhibitory antibody, eculizumab. The auto/allo cold agglutinin was subsequently suppressed with rituximab treatment.

CONCLUSIONS: Eculizumab, a potent C5 inhibitory antibody, can be a rapid and effective therapy for hyperhemolytic transfusion reactions when given in a sufficient dose to fully block the activation of complement C5.

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