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Liver transplant recipient survival benefit with living donation in the MELD era

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http://onlinelibrary.wiley.com/doi/10.1002/hep.24494/abstract

Liver transplant recipient survival benefit with living donation in the MELD allocation era†‡§
Carl L. Berg1,*,¶, Robert M. Merion2, Tempie H. Shearon3, Kim M. Olthoff4, Robert S. Brown Jr.5, Talia B. Baker6, Gregory T. Everson7, Johnny C. Hong8, Norah Terrault9, Paul H. Hayashi10, Robert A. Fisher11, James E. Everhart12
DOI: 10.1002/hep.24494

Abstract
Receipt of a living donor liver transplant (LDLT) has been associated with improved survival compared with waiting for a deceased donor liver transplant (DDLT). However, the survival benefit of liver transplant has been questioned for candidates with model for end-stage liver disease (MELD) scores< 15, and the survival advantage of LDLT has not been demonstrated during the MELD allocation era, especially for low MELD patients. Transplant candidates enrolled in the Adult-to-Adult Living Donor Liver Transplantation Cohort Study after 02/28/02 were followed for a median of 4.6 years. Starting at the time of presentation of the first potential living donor, mortality for LDLT recipients was compared to mortality for patients who remained on the waiting list or received DDLT (no LDLT group) according to categories of MELD score (<15 or 15+) and diagnosis of hepatocellular carcinoma (HCC). Of 868 potential LDLT recipients (453 with MELD<15; 415 with MELD 15+ at entry), 712 underwent transplantation (406 LDLT; 306 DDLT), 83 died without transplant, and 73 were alive without transplant at last follow-up. Overall, LDLT recipients had 56% lower mortality (hazard ratio (HR)=0.44, 95% confidence interval [CI] 0.32-0.60; p<0.0001). Among candidates without HCC, mortality benefit was seen both with MELD<15 (HR=0.39;p=0.0003) and MELD 15+ (HR=0.42;p=0.0006). Among candidates with HCC, a benefit of LDLT was not seen for MELD<15 (HR=0.82, p =0.65) but was seen for MELD 15+ (HR=0.29, p=0.043). Conclusions: Across the range of MELD scores, patients without HCC derived a significant survival benefit when undergoing LDLT rather than waiting for DDLT in the MELD liver allocation era. Low MELD candidates with HCC may not benefit from LDLT. (Hepatology 2011.)

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