Related Experiment Video
Updated: Jan 24, 2026

Robot-Assisted Kidney Transplantation
Published on: July 19, 2021
Defining a Willingness-to-transplant Threshold in an Era of Organ Scarcity: Simultaneous Liver-kidney Transplant as a
Xingxing S Cheng1, Jeremy Goldhaber-Fiebert2, Jane C Tan1
1Division of Nephrology, Department of Medicine, Stanford University School of Medicine, Palo Alto, CA.
Background:
Organ scarcity continues in solid organ transplantation, such that the availability of organs limits the number of people able to benefit from transplantation. Medical advancements in managing end-stage organ disease have led to an increasing demand for multiorgan transplant, wherein a patient with multiorgan disease receives >1 organ from the same donor. Current allocation schemes give priority to multiorgan recipients compared with single-organ transplant recipients, which raise ethical questions regarding equity and utility.
Methods:
We use simultaneous liver and kidney (SLK) transplant, a type of multiorgan transplant, as a case study to examine the tension between equity and utility in multiorgan allocation. We adapt the health economics willingness-to-pay threshold to a solid organ transplant setting by coining a new metric: the willingness-to-transplant (WTT) threshold.
Results:
We demonstrate how the WTT threshold can be used to evaluate different SLK allocation strategies by synthesizing utility and equity perspectives.
Conclusions:
We submit that this new framework enables us to distill the question of SLK allocation down to: what is the minimum amount of benefit we require from a deceased donor kidney to allocate it for a particular indication? Addressing the above question will prove helpful to devising a rational system of SLK allocation and is applicable to other transplant settings.
Insights
Organ scarcity limits transplants. A new "willingness-to-transplant" metric balances transplant equity and utility, guiding allocation for simultaneous liver and kidney transplants and other multi-organ procedures.
Area of Science:
- Transplantation medicine
- Health economics
- Bioethics
Background:
- Organ scarcity remains a critical barrier in solid organ transplantation.
- Advancements in managing end-stage organ disease increase demand for multi-organ transplants.
- Current multi-organ transplant allocation prioritizes recipients, raising ethical concerns about equity and utility.
Purpose of the Study:
- To examine the ethical tension between equity and utility in multi-organ transplant allocation.
- To introduce a novel metric, the willingness-to-transplant (WTT) threshold, for evaluating organ allocation strategies.
- To use simultaneous liver and kidney (SLK) transplantation as a case study.
Main Methods:
- Adaptation of the health economics willingness-to-pay threshold to solid organ transplantation.
- Development and application of the willingness-to-transplant (WTT) threshold.
- Synthesis of utility and equity perspectives to evaluate SLK allocation strategies.
Main Results:
- The WTT threshold provides a framework for evaluating multi-organ transplant allocation.
- Demonstration of how the WTT threshold can assess different SLK allocation strategies.
- Integration of utility and equity considerations into a unified metric.
Conclusions:
- The WTT threshold simplifies SLK allocation decisions to a question of minimum required benefit from a donor organ.
- This framework aids in developing rational allocation systems for SLK transplants.
- The proposed framework is applicable to other multi-organ transplant scenarios.
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