3 years ago

The Impact of Repeated Mismatches in Kidney Transplantations Performed After Non-Renal Solid Organ Transplantation

B Foster, M Dahhou, R Sapir-Picchadze, H Cardinal, J M Côté, X Zhang
The aim of this study was to determine whether kidney transplantations performed after previous non-renal solid organ transplants are associated with worse graft survival when there are repeated HLA mismatches (RMM) with the previous donor(s). We performed a retrospective cohort study using data from the Scientific Registry of Transplant Recipients. Our cohort comprised 6, 624 kidney transplantations performed between January 1st 1990 and January 1st, 2015. All patients had previously received one or more non-renal solid organ transplants. RMM were observed in 35.3% of kidney transplantations and 3, 012 grafts were lost over a median follow-up of 5.4 years. In multivariate Cox regression analyses, we found no association between overall graft survival and either RMM in class 1 (hazard ratio (HR): 0.97, 95% confidence interval (CI) 0.89-1.07) or class 2 (HR: 0.95, 95% CI 0.85- 1.06). Results were similar for the associations between RMM, death-censored graft survival and patient survival. Our results suggest that the presence of RMM with previous donor(s) does not have an important impact on allograft survival in kidney transplant recipients who have previously received a non-renal solid organ transplant. This article is protected by copyright. All rights reserved.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/ajt.14495

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