Abstract
Young adults starting kidney replacement therapy (KRT) during childhood and reaching their 18th birthday (i.e. adult survivors of childhood KRT) form a challenging population of interest to nephrologists treating adults, as during this period there will be a transition to adult renal centres. Nonetheless, few studies have focused on the epidemiology of KRT in this group. We aimed to provide an update on these patients' characteristics, treatment history, graft and patient survival, to report their 5-year prognosis, and expected remaining lifetime. Data on KRT patients reaching their 18th birthday in 2008-2019 were collected from 21 European countries/regions providing individual patient data to the European Renal Association (ERA) Registry. Patient characteristics and treatment trajectories were examined before and after turning 18 years. Kaplan-Meier and Cox proportional hazards regression were used for patient and graft survival analyses. In total, 2944 patients were included. The proportion of adult survivors initiating KRT at a very young age (0-4 years), and undergoing pre-emptive kidney transplantation increased. Unadjusted 5-year patient survival was 96.9% (95% CI: 96.2-97.5). Dialysis patients had a higher risk of death than kidney transplant recipients (adjusted hazard ratio 5.44 (95% CI: 3.34-8.86)). Between ages 18 and 23 years, about 21% of the adult survivors lost their kidney transplant and 34% of the dialysis patients continued this treatment. Compared with the general population, life expectancy for eighteen-year-old kidney transplant and dialysis patients was 17 and 40 years shorter, respectively. Life expectancy of 18-year-old kidney transplant recipients was lower compared with the general population. Yet, having a functioning kidney graft at age 18 years resulted in better outcomes than being on dialysis. Nevertheless, between ages 18 and 23 years, about one-fifth of the kidney grafts failed and one-third of the patients remained on dialysis.
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Schedule a callMore From: Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association
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