Mader G, Mladsi DM, Zhou X, Sanon M, Wang J, Willey CJ, Seliger SL. Mortality risk in elderly ESRD patients with Autosomal Dominant Polycystic Kidney Disease (ADPKD): study findings using data from the United States Renal Data System. Poster presented at the 2020 Virtual American Society of Nephrology Kidney Week Conference; October 22, 2020.

BACKGROUND: Mortality rates may be different for patients in end-stage renal disease (ESRD) with ADPKD compared with patients with other etiologies of ESRD. While mortality estimates have been published by USRDS (2018) for elderly ESRD patients in general (220 per 1,000 patient-years using data from 2012) little has been published reporting national estimates for patients with ADPKD specifically. This analysis sought to estimate ADPKD-specific mortality rates among ESRD patients aged 65 years or older.

METHODS: ESRD patients treated with dialysis or transplant with at least one ADPKD diagnosis code and a reported ESRD service date from January 1, 2014, to December 31, 2016, in the US Renal Data System (USRDS) were included. Mortality rates were estimated overall, by sex, by race, and by age group (with a patient’s follow-up potentially spanning two age groups). Both unadjusted mortality and adjusted mortality by 2016 US population age distributions for 65 years and older were estimated.

RESULTS: Of 3,208,884 ESRD patients in the USRDS database, 76,428 patients (2.4%) had ADPKD and of those 14,756 were aged 65 years and older in the study period. Among elderly ADPKD patients, mean age was 70.8 years and overall mortality was 99.8 per 1,000 patient-years (129.6 age-adjusted).

CONCLUSION: These findings fill an important gap in the literature on ADPKD mortality in the US.

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