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  • Title: Renal transplant recipient and deceased-donor risk profiles at Wits Donald Gordon Medical Centre, Johannesburg, South Africa: A 9-year review.
    Author: Van der Schyff F, Barnard M, Ströbele B, De Jager M, Britz R, Gaylard P, Loveland J.
    Journal: S Afr Med J; 2024 Apr 24; 114(3b):e1321. PubMed ID: 39041448.
    Abstract:
    BACKGROUND: Renal transplantation is the gold-standard therapy for end-stage renal disease. Decision-making around the acceptance of deceased-donor organs is complex and time sensitive. Risk scoring systems for both donors and recipients attempt to simplify the allocation of renal grafts to the most appropriate recipient. OBJECTIVES: To investigate the role of these transplant risk scores in the South African (SA) setting. METHODS: A total of 188 adult deceased-donor organ referrals over the 9-year period 1 January 2013 - 31 December 2021 were included. The Kidney Donor Risk Index (KDRI) and the UK KDRI were calculated for each donor. Recipients who were allocated these grafts were characterised, and the Hennepin Transplant Risk Score and the Kidney Transplant Morbidity Index (KTMI) were calculated. RESULTS: The median (interquartile range) KDRI was 1.2 (0.9 - 1.6), confirming that low- to average-risk donors were being utilised. Similarly, the median UK KDRI was 0.9 (0.8 - 1.2). Both these scores performed poorly in predicting graft and patient survival, with a C-statistic of 0.5. Renal recipient risk scores also demonstrated low- to average-risk patients being transplanted, with a median Hennepin score of 2 - 4 points and a KTMI of 2 points. These recipient scores predict increased recipient mortality at high scores, albeit with low sensitivity, and were not significantly associated with graft survival. CONCLUSION: Deceased-donor and renal recipient risk scores commonly used internationally performed poorly in predicting graft survival in our cohort, and should be used with caution in the SA setting. A conservative approach to organ donor referral and utilisation as well as renal transplant recipient listing was noted.
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