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Efficient and Incentive-Compatible Liver Exchange

Author

Listed:
  • Haluk Ergin

    (Department of Economics, University of California at Berkeley)

  • Tayfun Sönmez

    (Boston College)

  • M. Utku Ünver

    (Boston College)

Abstract

Liver exchange has been practiced in small numbers, mainly to overcome blood-type incompatibility between patients and their living donors. A donor can donate either his smaller left lobe or the larger right lobe, although the former option is safer. Despite its elevated risk, right-lobe transplantation is often utilized due to size-compatibility requirement with the patient. We model liver exchange as a market-design problem, focusing on logistically simpler two-way exchanges. First, with two patient-donor sizes, we introduce an algorithm when only the safer left-lobe transplantation is feasible. We then introduce an individually rational, Pareto-efficient, and incentive-compatible mechanism that truthfully elicits the right-lobe-donation willingness of donors, and finally extend these results to a general model with any number of patient/donor sizes. The generalization requires new technical tools regarding bilateral exchanges under partial-order-induced preferences. Through simulations we show that not only liver exchange can increase the number of transplants by more than 30%, it can also increase the share of the safer left-lobe transplants.

Suggested Citation

  • Haluk Ergin & Tayfun Sönmez & M. Utku Ünver, 2018. "Efficient and Incentive-Compatible Liver Exchange," Boston College Working Papers in Economics 951, Boston College Department of Economics.
    • Handle: RePEc:boc:bocoec:951
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    References listed on IDEAS

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    Cited by:

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    2. Aygün, Orhan & Turhan, Bertan, 2021. "How to De-reserve Reserves," ISU General Staff Papers 202103100800001123, Iowa State University, Department of Economics.
    3. Orhan Aygün & Bertan Turhan, 2023. "How to De-Reserve Reserves: Admissions to Technical Colleges in India," Management Science, INFORMS, vol. 69(10), pages 6147-6164, October.
    4. Altuntaş, Açelya & Phan, William & Tamura, Yuki, 2023. "Some characterizations of Generalized Top Trading Cycles," Games and Economic Behavior, Elsevier, vol. 141(C), pages 156-181.
    5. Tayfun Sönmez & M. Utku Ünver, 2023. "Influencing Policy and Transforming Institutions: Lessons from Kidney/Liver Exchange," NBER Chapters, in: New Directions in Market Design, National Bureau of Economic Research, Inc.
    6. Orhan Aygun & Bertan Turhan, 2020. "Designing Direct Matching Mechanism for India with Comprehensive Affirmative Action," Papers 2004.13264, arXiv.org, revised Dec 2021.
    7. Aygün, Orhan & Turhan, Bertan, 2021. "How to De-reserve Reserves," ISU General Staff Papers 202104130700001123, Iowa State University, Department of Economics.
    8. Li, Mengling & Riyanto, Yohanes E. & Xu, Menghan, 2022. "Remedying adverse selection in donor-priority rule using freeze period: Theory and experiment," Journal of Economic Behavior & Organization, Elsevier, vol. 194(C), pages 384-407.
    9. Shubham Akshat & Sommer E. Gentry & S. Raghavan, 2024. "Heterogeneous donor circles for fair liver transplant allocation," Health Care Management Science, Springer, vol. 27(1), pages 20-45, March.
    10. Kim, Jaehong & Li, Mengling & Xu, Menghan, 2021. "Organ donation with vouchers," Journal of Economic Theory, Elsevier, vol. 191(C).

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    More about this item

    Keywords

    Market design; liver exchange; matching; incentive compatibility; efficiency;
    All these keywords.

    JEL classification:

    • D47 - Microeconomics - - Market Structure, Pricing, and Design - - - Market Design
    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory

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