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Kidney Transplantation Rates Across Glomerulonephritis Subtypes in the United States.
Kidney Transplantation Rates Across Glomerulonephritis Subtypes in the United States. Transplantation O'Shaughnessy, M. M., Liu, S., Montez-Rath, M. E., Lafayette, R. A., Winkelmayer, W. C. 2017Abstract
Whether kidney transplantation rates differ by glomerulonephritis (GN) subtype remains largely unknown.Using the US Renal Data System, we identified all adult patients with ESRD attributed to 1 of 6 GN subtypes who initiated dialysis in the US (1996-2013). Patients with diabetic nephropathy (DN) and autosomal-dominant polycystic kidney disease (ADPKD) served as "external" non-GN comparators. Using Cox proportional hazards regression, with death considered a competing risk, we estimated hazard ratios [HRs (95% confidence intervals)] for first kidney transplantation, controlling for year, demographics, comorbidities, socioeconomic factors, and Organ Procurement Organization (OPO).Among 718,480 patients studied, unadjusted and multivariable-adjusted transplant rates differed considerably across GN subtypes. Adjusted transplant rates were highest for patients with IgA nephropathy (IgAN, referent) and lower for all other groups: focal segmental glomerulosclerosis, HR=0.80 (0.77-0.82); membranous nephropathy, HR=0.88 (0.83-0.93); membranoproliferative GN, HR=0.84 (0.76-0.92); lupus nephritis, HR=0.69 (0.66-0.71); vasculitis, HR=0.66 (0.61-0.70); DN, HR=0.50 (0.47-0.52); ADPKD, HR=0.85 (0.82-0.88). Reduced kidney transplantation rates among comparator groups were driven more so by lower rates of waitlisting [HRs, vs. IgAN, ranged from 0.49 for DN to 0.92 for membranous nephropathy or ADPKD] than by lower rates of deceased donor kidney transplantation after waitlisting [rates were only significantly lower, vs. IgAN, for those with secondary GN subtypes: lupus nephritis, HR=0.91 (0.86-0.97), vasculitis, HR=0.85 (0.76-0.94); DN, HR=0.73 (0.69-0.77)].Identifying underlying reasons for apparent disease-specific barriers to kidney transplantation might inform center-specific transplant candidate selection procedures, along with national organ allocation policies, leading to more equitable patient care and improved patient outcomes.
View details for DOI 10.1097/TP.0000000000001657
View details for PubMedID 28207635