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Here we report a case wherein both donor-specific and third-party, paternal, HLA class II specific antibodies developed following a spontaneous miscarriage resulting in antibody-mediated rejection in a patient who had undergone an orthotopic cardiac transplant six years earlier.

We postulate that vimentin acts as an autoantigen after renal transplantation; it elicits an autoimmune response that is not regulated by cyclosporine. This autoimmune response may be part of the complex immunologic events occurring posttransplantation and may contribute to the development of CAN, but cannot be considered as a major cause of CAN because this condition also develops without antivimentin antibodies.

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