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11.09.2024 | Original Article

Association between pre-heart transplant kidney function and post-transplant outcomes in Black and White adults

verfasst von: Ying Wei, Elizabeth Mostofsky, Francisco J. Barrera, Lathan Liou, Soziema Salia, Martha Pavlakis, Murray A. Mittleman

Erschienen in: Journal of Nephrology | Ausgabe 6/2024

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Abstract

Background

It remains unknown whether estimated glomerular filtration rate (eGFR) using the refit Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation without a term for race is associated with mortality and the need for kidney replacement therapy (KRT) differentially between Black and White heart transplant recipients.

Methods

We studied 25,900 adults included in the Scientific Registry of Transplant Recipients. We classified recipients into six categories of eGFR (< 30, 30 to < 45, 45 to < 60, 60 to < 90, 90 to < 120, ≥ 120 ml/min/1.73 m²) using the race-neutral CKD-EPI refit equation, and assessed survival with multivariable adjusted Cox proportional hazards regression.

Results

The association between pre-transplant race-neutral eGFR and mortality varied by race (P_interaction = 0.006). Compared to White patients with an eGFR of 90–120 ml/min/1.73 m², the mortality rates were 57% (95% CI 1.25, 1.98), 29% (95% CI 1.11, 1.51), 34% (95% CI 1.19, 1.52), and 19% (95% CI 1.06, 1.33) higher in Black patients with an eGFR less than 30, 30–45, 45–60, and 60–90 ml/min/1.73m², respectively; and 53% (95% CI 1.28, 1.82), 49% (95% CI 1.33, 1.66), and 23% (95% CI 1.11, 1.35) higher among White patients with an eGFR less than 30, 30–45, and 45–60 ml/min/1.73 m², respectively. The association between pre-transplant eGFR and the need for KRT during follow-up was similar between Black and White patients (P_interaction = 0.57).

Conclusions

Worsening pre-transplant eGFR using the new race-neutral CKD-EPI refit equation was associated with a higher rate of post-heart transplant mortality and KRT in Black and White recipients. The racial disparity in post-heart transplant mortality was narrower in the setting of severe kidney dysfunction.

Graphical abstract

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Titel: Association between pre-heart transplant kidney function and post-transplant outcomes in Black and White adults
verfasst von: Ying Wei
Elizabeth Mostofsky
Francisco J. Barrera
Lathan Liou
Soziema Salia
Martha Pavlakis
Murray A. Mittleman
Publikationsdatum: 11.09.2024
Verlag: Springer International Publishing
Erschienen in: Journal of Nephrology / Ausgabe 6/2024
Print ISSN: 1121-8428
Elektronische ISSN: 1724-6059
DOI: https://doi.org/10.1007/s40620-024-02077-5

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Association between pre-heart transplant kidney function and post-transplant outcomes in Black and White adults