Abstract
Much is reported regarding the detrimental effect of transfer to adult services for adolescent and young adult (AYA) kidney transplant (KT) recipients. However, AYA recipient age independent of time post-KT, and not relating to transfer of care, is also a strong predictor of graft loss. We assessed KT graft survival if experiencing solely pediatric (PO) or adult services (AO) versus transfer from pediatric to adult services (PTA). A retrospective cohort analysis of all first kidney transplant recipients between birth-24 years of age, from 2000 to 2019 in New Zealand. Participant identification and data were obtained via the Australia and New Zealand Dialysis and Transplantation registry. Primary outcome was graft survival stratified by service type. Cox proportional hazard modeling assessed independent risk factors of graft loss. Two hundred forty-four children and AYA with a median follow-up of 7.3 years were included. Graft survival stratified by service provision group was not different. The incidence rate of graft loss was 37, 34, and 45 per 1000 persons per year for PO, PTA, and AO respectively. Crude age-specific graft failure rates were highest for 22-24-year-olds with inferior outcomes starting from age 16, peaking at 24 years. Older adolescence and young adulthood reflect a high-risk period for KT loss. Transfer to adult services was not associated with worse graft survival compared to those experiencing either AO or PO alone. Improved models of care are needed to improve graft survival in this vulnerable population within New Zealand.
Published Version
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