RT Journal Article
SR Electronic
T1 The Impact of Liver Transplantation on Hepatocellular Carcinoma Mortality in the United States
JF Cancer Epidemiology Biomarkers & Prevention
JO Cancer Epidemiol Biomarkers Prev
FD American Association for Cancer Research
SP cebp.1188.2020
DO 10.1158/1055-9965.EPI-20-1188
A1 Mahale, Parag
A1 Shiels, Meredith S.
A1 Lynch, Charles F.
A1 Chinnakotla, Srinath
A1 Wong, Linda L
A1 Hernandez, Brenda Y.
A1 Pawlish, Karen S.
A1 Li, Jie
A1 Alverson, Georgetta
A1 Schymura, Maria J
A1 Engels, Eric A.
YR 2020
UL http://cebp.aacrjournals.org/content/early/2020/11/14/1055-9965.EPI-20-1188.abstract
AB Background: Hepatocellular carcinoma (HCC) carries a poor prognosis. Liver transplantation (LT) is potentially curative for localized HCC. We evaluated the impact of LT on US general population HCC-specific mortality rates. Methods: The Transplant Cancer Match Study links the US transplant registry with 17 cancer registries. We calculated age-standardized incidence (1987-2017) and incidence-based mortality (IBM) rates (1991-2017) for adult HCCs. We partitioned population-level IBM rates by cancer stage and calculated counterfactual IBM rates assuming transplanted cases had not received a transplant. Results: Among 129,487 HCC cases, 45.9% had localized cancer. HCC incidence increased on average 4.0% annually (95%CI=3.6%-4.5%). IBM also increased for HCC overall (2.9% annually; 95%CI=1.7%-4.2%) and specifically for localized stage HCC (4.8% annually; 95%CI=4.0%-5.5%). The proportion of HCC-related transplants jumped sharply from 6.7% (2001) to 18.0% (2002), and further increased to 40.0% (2017). HCC-specific mortality declined among both non-transplanted and transplanted cases over time. In the absence of transplants, IBM for localized HCC would have increased at 5.3% instead of 4.8% annually. Conclusions: LT has provided survival benefit to patients with localized HCC. However, diagnosis of many cases at advanced stages, limited availability of donor livers, and improved mortality for non-transplanted patients have limited the impact of transplantation on general population HCC-specific mortality rates. Impact: Though LT rates continue to rise, better screening and treatment modalities are needed to halt the rising HCC mortality rates in the US.