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  • Title: Efficacy of D- red blood cell transfusion and rituximab therapy in autoimmune hemolytic anemia with anti-D and panreactive autoantibodies arising after hematopoietic stem cell transplant.
    Author: Minakawa K, Ohto H, Yasuda H, Saito S, Kawabata K, Ogawa K, Nollet KE, Ikeda K.
    Journal: Transfusion; 2018 Jul; 58(7):1606-1610. PubMed ID: 29664112.
    Abstract:
    BACKGROUND: Autoimmune hemolytic anemia (AIHA) is caused by autoantibodies to red blood cells (RBCs), which can be panreactive and/or specific to Rh/other blood group antigens. We report a severe case of AIHA after bone marrow transplantation (BMT) due to autoanti-D triggered by reactivation of Epstein-Barr virus (EBV) infection. A combined strategy of D- RBC transfusion and administration of anti-CD20 monoclonal antibody (MoAb) resolved the hemolysis. CASE REPORT: A 33-year-old male underwent allogeneic BMT from an ABO-identical and HLA-matched unrelated male donor. Five months later, while having mild chronic graft-versus-host disease, he manifested AIHA, with a hemoglobin (Hb) level of 5.1 g/dL on AIHA Day 2 (Posttransplant Day 156) and was refractory to D+ RBCs, with a Hb level of 2.4 g/dL on AIHA Day 6. Anti-D-like autoantibodies (titer 1280, subclass immunoglobulin G1 , monocyte monolayer assay 28.7%) and panreactive (titer 40) were identified. Changing the RBC transfusion strategy to D- increased his Hb level to 6.7 g/dL on Day 10. Administration of anti-CD20 MoAb mitigated EBV-related B-cell proliferation and reduced anti-D autoantibody titer to 320 by Day 16 with normalized Hb concentration after 6 months. CONCLUSION: In severe AIHA, when standard treatment and regular RBC transfusions are ineffective, transfusion of RBCs lacking the target antigen(s) of autoantibodies and administration of anti-CD20 MoAb should be considered.
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