Wait expectations: The impact of delisting as an outcome from the kidney transplant waitlist.

BACKGROUND While kidney transplantation is optimal for the treatment of end-stage kidney disease, available organs do not meet demand. Little is known about the outcomes of patients who are delisted (removed from the waitlist) and unable to benefit from transplant. We describe patients who are delisted and their life expectancy after delisting. METHODS Patients ≥ 18 years listed for deceased donor kidney transplant between 01/2003 and 12/2013 were identified in the Scientific Registry of Transplant Recipients and followed through 12/2018. A competing risk model was used to measure the association of demographic and clinical factors with waitlist outcomes of delisting, transplant, and death. Multivariate Cox modeling was used to evaluate factors associated with death after delisting. RESULTS Of 324,582 patients listed, 18.0% were delisted, most common reasons were "too sick" or "other." After delisting, half (49.7%) had died by end of follow-up; time to death after removal was 5 years. Increasing age and public insurance were associated with increased risk of death. CONCLUSIONS Nearly one in five patients will be delisted from the kidney transplant waitlist. These patients live a surprisingly long time after removal. Much remains unknown about these patients, which could be improved through data collection. Delisting is an important patient outcome that warrants further exploration.