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Survival Benefit of Simultaneous Liver Kidney (SLK) Transplant in Liver Transplant Candidates With Renal Dysfunction

B. Tanriover,1 S. Zhang,2 J. Marrero.3

1Medicine/Nephrology, UT Southwestern, Dallas, TX
2Clinical Sciences, UT Southwestern, Dallas, TX
3Medicine/Hepatology, UT Southwestern, Dallas, TX.

Meeting: 2015 American Transplant Congress

Abstract number: B135

Keywords: Kidney/liver transplantation, Liver cirrhosis, Mortality, Renal dysfunction

Session Information

Date: Sunday, May 3, 2015

Session Name: Poster Session B: Liver - Kidney Issues in Liver Transplantation

Session Time: 5:30pm-6:30pm

 Presentation Time: 5:30pm-6:30pm

Location: Exhibit Hall E

Related Abstracts
  • Comparable Risk of End-Stage Renal Disease (ESRD) in Liver Transplant Alone (LTA) and Simultaneous Liver Kidney (SLK) Recipients Who Had Pre-LT Kidney Biopsy for Renal Dysfunction or Proteinuria
  • Liver May Not Protect Against Kidney Rejection in Simultaneous Liver-Kidney Transplantation (SLK), The

Survival benefit of SLK over liver transplant alone (LTA) in patients with same level of renal dysfunction and effect of organ quality on mortality are not well studied.

We analyzed OPTN registry that included adult LTA and SLK recipients transplanted between 2002 and 2013. Primary outcomes were post-transplant mortality and effect of donor quality on post-transplant mortality. We excluded patients with Status 1 and the ones who received exception MELD points. The study cohort (N=4,729) was divided into 4 groups based on renal function at listing and transplant: LK1: not on dialysis at listing and serum creatinine (Scr) <2 mg/dl at transplant; LK2: not on dialysis at listing and Scr≥2 mg/dl at transplant; LK3: not on dialysis at listing but on dialysis at transplant; LK4: on dialysis at listing and transplant. Since liver transplant recipients with renal dysfunction were not randomly assigned to LTA vs. SLK, selection bias was adjusted for by developing a propensity score (PS) matching. We constructed a propensity score based on a model that is stratified by transplant type in 4 different groups (LTA vs. SLK in LK1, LK2, LK3, and LK4). The variables were used in the propensity score as follows: age, gender, race, BMI, recipient diabetes, underlying liver disease etiology, Scr at transplant, serum bilirubin at transplant, INR at transplant, wait list duration, and liver donor risk index (DRI) score.

Results are shown below on the table and figure.

SLK offers survival benefit in patients with LK2 (pre-transplant chronic renal dysfunction Scr>2mg/dl but not exposed to dialysis). Mortality rate significantly differs with donor quality. Decrease in mortality risk for SLK was restricted to better quality donors (liver DRI scores<1.3 or equivalent kidney donor profile index –KDPI<40%).

Multivariate Cox model for mortality risk with SLK compared to LTA, adjusted for PS
  HR 95%CI P
LK1 0.75 0.50-1.12 0.155
LK2 0.78 0.63-0.96 0.021
LK3 0.84 0.68-1.04 0.106
LK4 0.83 0.65-1.05 0.122

Effect of liver DRI on mortality in SLK compared with LTA.

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To cite this abstract in AMA style:

Tanriover B, Zhang S, Marrero J. Survival Benefit of Simultaneous Liver Kidney (SLK) Transplant in Liver Transplant Candidates With Renal Dysfunction [abstract]. Am J Transplant. 2015; 15 (suppl 3). https://atcmeetingabstracts.com/abstract/survival-benefit-of-simultaneous-liver-kidney-slk-transplant-in-liver-transplant-candidates-with-renal-dysfunction/. Accessed April 19, 2021.

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