Journal of the American Society of Nephrology : JASN · 2025
Racial and Ethnic Disparities in Outcomes following Preemptive Kidney Transplant Waitlisting in the United States from 2009 to 2024.
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Adeyemo Simeon, Crews Deidra C, Lentine Krista L, Zisman-Ilani Yaara, Lincoln Karen D, Flores Glenda M, Bunnapradist Suphamai, Ferrey Antoney J, Reddy Uttam G, Muzaale Abimereki D, Rule Andrew D, Saunders Milda, Garg Amit X, Le Thu H, Rhee Connie M, Kalantar-Zadeh Kamyar, Al Ammary Fawaz
Аннотация
KEY POINTS: Among US preemptively waitlisted patients with CKD, deceased donor transplants increased for Black and Hispanic patients, comparable with White patients. Dialysis initiation was higher for waitlisted Asian, Black, and Hispanic patients compared with White patients, mirroring lower living donor transplants. Organ Procurement and Transplantation Network wait time credit and Increasing Organ Transplant Access metric could expand preemptive transplantation.
BACKGROUND: Preemptive kidney transplantation (before dialysis initiation) is the optimal therapy for most transplant-eligible advanced patients with CKD. Although prior research has documented racial and ethnic disparities in preemptive referrals, less is known about distinct outcomes after preemptive waitlisting. This study examines the association between race and ethnicity and outcomes for preemptively waitlisted patients.
METHODS: We conducted a secondary analysis of a prospectively maintained US cohort using data from the Scientific Registry of Transplant Recipients. The study population included 98,863 adult first-time kidney transplant candidates who were preemptively waitlisted from January 1, 2009, to December 31, 2020, and followed through December 31, 2024. The exposure of interest was race and ethnicity. The primary outcome was 3-year preemptive deceased donor kidney transplantation, living donor kidney transplantation, or dialysis initiation. We used competing risk models to estimate adjusted subdistribution hazard ratios (aSHRs). Data were stratified into 3-year intervals (2009–2011, 2012–2014, 2015–2017, and 2018–2020).
RESULTS: Black and Hispanic patients received preemptive deceased donor kidney transplants as often as White patients (era 2018–2020, aSHRs [95% confidence interval (CI)]: 0.99 [95% CI, 0.92 to 1.07] and 1.02 [95% CI, 0.93 to 1.12], respectively), while Asian patients had lower rates (0.78 [95% CI, 0.69 to 0.88]). However, Asian, Black, and Hispanic patients were more likely to initiate dialysis (aSHRs: 1.50 [95% CI, 1.39 to 1.61]; 1.41 [95% CI, 1.34 to 1.49]; and 1.21 [95% CI, 1.14 to 1.29], respectively) and were less likely to receive preemptive living donor kidney transplants than White patients (era 2018–2020, aSHRs: 0.49 [95% CI, 0.44 to 0.54]; 0.31 [95% CI, 0.29 to 0.34]; and 0.61 [95% CI, 0.56 to 0.66], respectively).
CONCLUSIONS: Among waitlisted patients with CKD in the United States between 2009 and 2020, rates of preemptive deceased donor kidney transplantation improved for Black and Hispanic patients and became comparable with White patients. However, Asian, Black, and Hispanic patients experienced higher rates of dialysis initiation and lower rates of preemptive living donor kidney transplantation.
BACKGROUND: Preemptive kidney transplantation (before dialysis initiation) is the optimal therapy for most transplant-eligible advanced patients with CKD. Although prior research has documented racial and ethnic disparities in preemptive referrals, less is known about distinct outcomes after preemptive waitlisting. This study examines the association between race and ethnicity and outcomes for preemptively waitlisted patients.
METHODS: We conducted a secondary analysis of a prospectively maintained US cohort using data from the Scientific Registry of Transplant Recipients. The study population included 98,863 adult first-time kidney transplant candidates who were preemptively waitlisted from January 1, 2009, to December 31, 2020, and followed through December 31, 2024. The exposure of interest was race and ethnicity. The primary outcome was 3-year preemptive deceased donor kidney transplantation, living donor kidney transplantation, or dialysis initiation. We used competing risk models to estimate adjusted subdistribution hazard ratios (aSHRs). Data were stratified into 3-year intervals (2009–2011, 2012–2014, 2015–2017, and 2018–2020).
RESULTS: Black and Hispanic patients received preemptive deceased donor kidney transplants as often as White patients (era 2018–2020, aSHRs [95% confidence interval (CI)]: 0.99 [95% CI, 0.92 to 1.07] and 1.02 [95% CI, 0.93 to 1.12], respectively), while Asian patients had lower rates (0.78 [95% CI, 0.69 to 0.88]). However, Asian, Black, and Hispanic patients were more likely to initiate dialysis (aSHRs: 1.50 [95% CI, 1.39 to 1.61]; 1.41 [95% CI, 1.34 to 1.49]; and 1.21 [95% CI, 1.14 to 1.29], respectively) and were less likely to receive preemptive living donor kidney transplants than White patients (era 2018–2020, aSHRs: 0.49 [95% CI, 0.44 to 0.54]; 0.31 [95% CI, 0.29 to 0.34]; and 0.61 [95% CI, 0.56 to 0.66], respectively).
CONCLUSIONS: Among waitlisted patients with CKD in the United States between 2009 and 2020, rates of preemptive deceased donor kidney transplantation improved for Black and Hispanic patients and became comparable with White patients. However, Asian, Black, and Hispanic patients experienced higher rates of dialysis initiation and lower rates of preemptive living donor kidney transplantation.