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Updated: Oct 4, 2025

A Three-Dimensional Spheroid Model to Investigate the Tumor-Stromal Interaction in Hepatocellular Carcinoma
Published on: September 30, 2021
Changing opportunities for liver transplant for patients with hepatocellular carcinoma
Alex Zendel1, Randall Watkins1, Andrew M Moon2
1Division of Abdominal Transplant Surgery, Department of Surgery, University of North Carlina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA.
Introduction:
Aim was to study the early impact of acuity circle-based allocation implementation system on liver transplantation for hepatocellular carcinoma (HCC) patients.
Methods:
We assessed characteristics of HCC and non-HCC deceased donor orthotopic liver transplants (OLT) in the year before (2/2019-2/2020) and after (3/2020-2/2021) introduction of the acuity circle policy using the Organ Procurement and Transplantation Network (OPTN)/United Network for Organ Sharing (UNOS) database.
Results:
Total OLTs reduced from 6699 in the preacuity circle era to 6660 in the postacuity circle era (-.6%); this decrease is mostly driven by a decrease in HCC transplants (1529 to 1351; -11.6%). Six out of 11 regions had a reduction in the absolute number and percentage of HCC transplants with significant reductions in regions 2 (-37.8%, p < .001) and 4 (-28.3%, p = .001).
Discussion:
The introduction of median model for end-stage liver disease (MELD) at transplant minus 3 (MMaT-3) exception points, has created differential opportunities for HCC patients, in low-MELD as opposed to high-MELD areas, despite having the same disease. This effect has become more prominent following the implementation of acuity circle-based allocation system. Ongoing investigation of these trends is needed to ensure that HCC patients are not disparately disadvantaged due to their location.
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