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Case Reports
Journal Article
A Case of Chronic Active Antibody-Mediated Rejection Caused by a Pre-Existing Anti-DQ Donor-Specific Antibody in a Systemic Lupus Erythematosus Recipient Without History of Sensitization: A Case Report.
Transplantation Proceedings 2023 May
BACKGROUND: Systemic lupus erythematosus (SLE) is reported to produce anti-HLA antibodies. We report a case of chronic active antibody-mediated rejection caused by pre-existing donor-specific antibody (DSA) in a patient with SLE without a history of sensitization.
CASE REPORT: The case was a 29-year-old man with end-stage renal disease due to lupus nephritis. Cross-match with the mother was negative, but low titer anti-DQ DSA was detected, although he had no prior history of sensitization. After desensitization with rituximab and mycophenolate mofetil, a living donor kidney transplant was undergone, and his early postoperative period was uneventful. However, his renal function started to decline at 2 years post-transplant. Although there was no rejection on the biopsy at 2.5 years post-transplant, his renal function continued to decline after that. At 7 years, he had failed his graft due to chronic active antibody-mediated rejection. Retrospective analysis of human leukocyte antigen antibody tests revealed that anti-DQ DSA had disappeared at 1 year post-transplant, but high titer DSA was detected again with complement-binding capacity at 2 years and after that.
CONCLUSION: Careful monitoring might be warranted in an SLE patient with pre-existing DSA, even though the titer was low and without any prior histories of sensitization events.
CASE REPORT: The case was a 29-year-old man with end-stage renal disease due to lupus nephritis. Cross-match with the mother was negative, but low titer anti-DQ DSA was detected, although he had no prior history of sensitization. After desensitization with rituximab and mycophenolate mofetil, a living donor kidney transplant was undergone, and his early postoperative period was uneventful. However, his renal function started to decline at 2 years post-transplant. Although there was no rejection on the biopsy at 2.5 years post-transplant, his renal function continued to decline after that. At 7 years, he had failed his graft due to chronic active antibody-mediated rejection. Retrospective analysis of human leukocyte antigen antibody tests revealed that anti-DQ DSA had disappeared at 1 year post-transplant, but high titer DSA was detected again with complement-binding capacity at 2 years and after that.
CONCLUSION: Careful monitoring might be warranted in an SLE patient with pre-existing DSA, even though the titer was low and without any prior histories of sensitization events.
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