Abstract
Background
The Kidney Donor Risk Index (KDRI) by Rao et al. was developed to measure the quality of kidney allografts. While Rao’s KDRI has been found to be a robust measure of kidney allograft survival for adult kidney transplant recipients, many studies have indicated the need to create a distinct pediatric KDRI.
Methods
Our retrospective study utilized data from the United Network for Organ Sharing database. We examined 9295 deceased donor recipients’ data for age < 18 years from 1990 to 2020. We performed a multivariate Cox regression to determine the significant recipient and transplant factors impacting pediatric kidney allograft survival.
Results
Multivariate analysis found 5 donor factors to be independently associated with graft failure or recipient death: age, female sex, anoxia as the cause of death, history of cigarette use, and cold ischemia time. Using receiver operator characteristic (ROC) curve analysis and analyzing the predictive value of each KDRI at 1, 5, and 10 years, the proposed pediatric KDRI had a statistically significant and higher predictive value for pediatric recipients at 5 (0.60 versus 0.57) and 10 years (0.61 versus 0.57) than the Rao KDRI.
Conclusions
The proposed pediatric KDRI may provide a more accurate and simpler index to assess the quality of kidney allografts for pediatric recipients. However, due to the mild increase in predictive capabilities over the Rao index, the study serves as a proof of concept to develop a pediatric KDRI. Further studies should focus on increasing the index’s predictive capabilities.
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Data availability
Data utilized in this study were from the United Network for Organ sharing public database. Statistical analysis utilized Stata 17.0 (Stata Corp).
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Dr. Abbas Rana and Cameron Goff contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Ashley Montgomery. The first draft of the manuscript was written by Ashley Montgomery. All authors commented on previous versions of the manuscript and provided critical revisions for important intellectual content. All authors read and approved the final manuscript.
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The study utilized deidentified patient information from the public database United Network for Organ Sharing. IRB approval was not needed for this study.
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Montgomery, A., Goff, C., Adeyeri, B. et al. A modified Kidney Donor Risk Index for pediatric kidney transplant recipients. Pediatr Nephrol 38, 1309–1317 (2023). https://doi.org/10.1007/s00467-022-05722-y
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DOI: https://doi.org/10.1007/s00467-022-05722-y