Outcomes of Renal Transplantation in ANCA-Associated Vasculitis. 2024

Xiaoqin Long, and Xiaobing Yang, and Shudong Yao, and Jia Wu
Rheumatism Immunity Branch, Huzhou Third Municipal Hospital, The Affiliated Hospital of Huzhou University, Huzhou, Zhejiang, China (mainland).

BACKGROUND Antineutrophil cytoplasmic antibody-associated vasculitis is characterized by small-vessel inflammation and ANCA-positive serology that often lead to end-stage kidney disease. This study investigated the outcomes of renal transplantation in patients with antineutrophil cytoplasmic antibody-associated vasculitis. MATERIAL AND METHODS A comprehensive search of PubMed, Scopus, and Embase databases was done to retrieve studies that reported on the outcomes of renal transplantation in these patients. Data on mortality, survival, infection, and relapse rates were analyzed. The quality of the included studies was evaluated using the Newcastle-Ottawa Scale for cohort studies. RESULTS Twenty-three retrospective cohort studies were included in this review. Antineutrophil cytoplasmic antibody-associated vasculitis was associated with high post-transplantation mortality rates, with a pooled rate ratio of 11.99 per 100 patient-years, but relatively favorable survival rate (hazard rate of 0.80). After renal transplantation, these patients had elevated infection rates (pooled rate ratio of 52.70 per 100 patient-years), and high risk of relapse (pooled rate ratio of 6.96), emphasizing the importance of vigilant post-transplantation monitoring. CONCLUSIONS End-stage kidney disease patients with vasculitis, undergoing renal transplantation, are at elevated risk of mortality and postoperative infection compared to patients without antineutrophil cytoplasmic antibody-associated vasculitis. The risk of relapse is also high in these patients. However, renal transplantation offers a survival advantage for vasculitis patients who survive the early post-transplantation period.

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