Adult-to-Adult Living Donor Liver Transplantation Study

Study Overview
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Brief Summary
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There are two principal purposes of this study: 1) to determine whether it is more beneficial for a liver transplant recipient candidate to pursue a living donor liver transplant (LDLT) or wait for a deceased donor liver transplant (DDLT), and 2) to study the impact of liver donation on the donor's health and quality of life.

Detailed Description
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Adult to adult living donor liver transplantation (LDLT) is a relatively new procedure increasingly used at major transplantation centers. Relatively small numbers of cases are performed at any one center and approaches to the patient and donor are too diverse across centers to provide reliable and generalizable information on donor and recipient outcomes from individual centers. Therefore, a network of nine leading liver transplantation centers and a data coordination center (DCC) has been organized to accrue and follow sufficient numbers of patients being considered for and undergoing LDLT to provide generalizable results from adequately powered studies. This network has established the Adult to Adult Living Donor Liver Transplantation Cohort Study (A2ALL) that will conduct both retrospective and prospective studies of LDLT. The primary study objective is to analyze the effect of choosing to pursue living liver donation. The principal hypothesis is that pursuit of a living liver allograft leads to decreased pre-transplant morbidity and mortality and better long term outcomes for patients starting from the point at which listed patients have a potential donor evaluated (at least a history and physical examination). Emerging data suggest that LDLT provides an inferior graft because of reduced parenchymal mass and added technical complexity when compared to a whole liver used for DDLT. The magnitude of the disadvantage to the LDLT graft will be assessed by comparing results between LDLT and DDLT from the time of transplant. Finally, a careful and detailed series of studies of potential and actual living liver donors is included as a primary objective because of the tremendous importance of this issue to our understanding of the impact of the procedure. Secondary objectives will address selected biological and clinical issues in transplantation structured around the comparison between DDLT and LDLT.

Official Title
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Adult-to-Adult Living Donor Liver Transplantation Cohort Study

Conditions
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Cirrhosis, Hepatitis C, Hepatocellular Carcinoma

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria - Potential Recipients: Potential recipient listed for single organ (liver) transplantation Patient is eligible for LDLT Age ≥ 18 years old at the time of donor history and physical exam Indication for transplant: non-fulminant liver disease Potential donor scheduled for evaluation (history and physical examination) within four weeks Inclusion Criteria - Potential Donors: Meet donor criteria of the transplant center Age >= 18 years old at donation Be evaluated with a history and physical examination at the transplant center Potential donor's recipient listed for single organ (liver) transplantation

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Donors<br>Living liver donors. This label may also refer to those evaluated for liver donation who did not go on to donate, i.e., potential living liver donors. | |
| Recipients<br>Liver transplant recipients (either living or deceased donor). This label may also refer to those who were evaluated for liver transplantation, but never received a transplant, i.e., potential recipients. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Survival of the potential liver transplant recipient | Time from evaluation of a living liver donor until death of the potential recipient, to test the benefit of living liver donation. | Time from living donor evaluation to death | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Recipient survival from time of transplant (either living or deceased donor) | Recipient survival from transplant to death. The goal is to compare survival among living donor versus deceased donor recipients. | From transplant until death or last follow-up | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Living donors, Organ procurement, Liver transplantation, Hepatitis C, Hepatocellular carcinoma, Hepatectomy, Liver regeneration, Graft rejection, Quality of life, Informed consent