Factors Associated With Detection and Survival of T1 Hepatocellular Carcinoma in the United States: National Cancer Database Analysis

Living Donor Liver Transplantation for Hepatocellular Carcinoma Within and Outside Traditional Selection Criteria: A Multicentric North American Experience

OBJECTIVE

To evaluate long-term oncologic outcomes of patients post-living donor liver transplantation (LDLT) within and outside standard transplantation selection criteria and the added value of the incorporation of the New York-California (NYCA) score.

BACKGROUND

LDLT offers an opportunity to decrease the liver transplantation waitlist, reduce waitlist mortality, and expand selection criteria for patients with hepatocellular carcinoma (HCC).

METHODS

Primary adult LDLT recipients between October 1999 and August 2019 were identified from a multicenter cohort of 12 North American centers. Posttransplantation and recurrence-free survival were evaluated using the Kaplan-Meier method.

RESULTS

Three hundred sixty LDLTs were identified. Patients within Milan criteria (MC) at transplantation had a 1, 5, and 10-year posttransplantation survival of 90.9%, 78.5%, and 64.1% versus outside MC 90.4%, 68.6%, and 57.7% ( P = 0.20), respectively. For patients within the University of California San Francisco (UCSF) criteria, respective posttransplantation survival was 90.6%, 77.8%, and 65.0%, versus outside UCSF 92.1%, 63.8%, and 45.8% ( P = 0.08). Fifty-three (83%) patients classified as outside MC at transplantation would have been classified as either low or acceptable risk with the NYCA score. These patients had a 5-year overall survival of 72.2%. Similarly, 28(80%) patients classified as outside UCSF at transplantation would have been classified as a low or acceptable risk with a 5-year overall survival of 65.3%.

CONCLUSIONS

Long-term survival is excellent for patients with HCC undergoing LDLT within and outside selection criteria, exceeding the minimum recommended 5-year rate of 60% proposed by consensus guidelines. The NYCA categorization offers insight into identifying a substantial proportion of patients with HCC outside the MC and the UCSF criteria who still achieve similar post-LDLT outcomes as patients within the criteria.

mRNA-Based Approaches to Treating Liver Diseases

Diseases that affect the liver account for approximately 2 million deaths worldwide each year. The increasing prevalence of these diseases and the limited efficacy of current treatments are expected to stimulate substantial growth in the global market for therapeutics that target the liver. Currently, liver transplantation is the only curative option available for many liver diseases. Gene therapy represents a valuable approach to treatment. The liver plays a central role in a myriad of essential metabolic functions, making it an attractive organ for gene therapy; hepatocytes comprise the most relevant target. To date, viral vectors constitute the preferred approach to targeting hepatocytes with genes of therapeutic interest. Alternatively, mRNA-based therapy offers a number of comparative advantages. Clinical and preclinical studies undertaken to treat inherited metabolic diseases affecting the liver, cirrhosis and fibrosis, hepatocellular carcinoma, hepatitis B, and cytomegalovirus using lipid nanoparticle-encapsulated mRNAs that encode the therapeutic or antigenic protein of interest are discussed.

Early detection of hepatocellular carcinoma: roadmap for improvement

INTRODUCTION

Hepatocellular carcinoma (HCC) has a poor prognosis, related, in part, to frequent late-stage diagnosis. Improved implementation of effective HCC surveillance is critical to reduce HCC mortality.

AREAS COVERED

We performed a targeted literature review to identify intervention targets for improving HCC surveillance effectiveness, including enriched risk stratification tools, improved surveillance tools with higher accuracy for early HCC detection, and increasing surveillance adherence.

EXPERT OPINION

HCC surveillance has been demonstrated to be efficacious in several cohort studies but has lower surveillance effectiveness in clinical practice. HCC surveillance is currently recommended in all patients with cirrhosis, and improved risk stratification using clinical risk scores, genetic scores, and novel biomarkers are important to move from a 'one-size-fits-all' strategy to one more aligned with values of precision medicine. Current surveillance modalities, ultrasound, and AFP, miss over one-third of HCC at an early stage and are associated with potential surveillance harms, underscoring a need for alternative surveillance strategies with higher accuracy. MRI- and biomarker-based surveillance strategies have promising early data in phase II studies but require validation in phase III cohorts before routine use in practice. Finally, surveillance is underused in clinical practice, highlighting a need for intervention strategies to increase utilization.

Percutaneous ablation versus surgical ablation and resection of liver tumors: medicare volume and physician reimbursement trends from 2010 to 2018

PURPOSE

The purpose of this study is to analyze trends in Medicare volume and physician reimbursement for percutaneous ablation, surgical ablation, and resection of liver tumors from 2010 to 2018.

METHODS

Claims from the Medicare Part B PSPSMF for the years 2010 to 2018 were extracted using the CPT codes for percutaneous and surgical ablation of liver tumors and surgical liver resection. Total procedural volume and physician payment were analyzed by procedure and physician specialty.

RESULTS

From 2010 to 2018, the volume of percutaneous ablation of liver tumors increased 94.3% from 1630 to 3168 procedures, and the volume of surgical ablations increased 86.2% from 593 to 1104 procedures. In contrast, there was a 16.8% decrease in liver resections from 10,807 to 8994 procedures. Physician reimbursement for percutaneous ablation decreased from $702.41 to $610.11 (- 13.1%). Conversely, reimbursement for resection increased from $849.18 to $1015.06 (19.5%). Reimbursement for surgical ablation also increased from $722.36 to $744.25 (3.0%). In 2018, physician reimbursement for resection and surgical ablation were 66% and 22% more than that for percutaneous ablation.

CONCLUSION

An increasing number of patients with liver tumors were treated with percutaneous ablation from 2010 to 2018. Despite higher morbidity, a dwindling set of theoretical advantages over percutaneous ablation, and higher overall costs, the volume of surgical ablation also increased over this time period. The findings of this study suggest that a reevaluation of practice and referral patterns for surgical ablation of liver tumors is warranted in many institutions.

The Mortality and Overall Survival Trends of Primary Liver Cancer in the United States

BACKGROUND

Recent trends of hepatocellular carcinoma (HCC) mortality and outcome remain unknown in the United States (US). We investigated the recent trends of primary liver cancer (excluding intrahepatic cholangiocarcinoma) mortality and HCC stage, treatment, and overall survival (OS) in the US.

METHODS

US Cancer Mortality database was analyzed to investigate the trend of primary liver cancer mortality. We analyzed the SEER 18 database to assess the temporal trend of tumor size, stage, treatment, and OS of HCC. Cox regression analysis investigated the association between HCC diagnosis year and OS. All statistical tests were 2-sided.

RESULTS

During 2000-2018, liver cancer mortality rates increased until 2013, plateaued during 2013-2016 (annual percent change [APC] = 0.1%/yr, 95% confidence interval [CI] = -2.1% to 2.4%; P=0.92), and started to decline during 2016-2018 (APC = -1.5%/yr, 95% CI= -3.2% to 0.2%; P=0.08). However, mortality continues to increase in American Indians/Alaska Natives, individuals aged 65 or older, and in 33 states. There was a 0.61% (95% CI = 0.53% to 0.69%; P<0.001) increase in localized stage HCC and 0.86 mm (95% CI= -1.10 to -0.62; P<0.001) decrease in median tumor size per year. One-year OS rate increased from 36.3% (95% CI = 34.3% to 38.3%) to 58.1% (95% CI = 56.9% to 59.4%) during 2000-2015, and five-year OS rate almost doubled from 11.7% (95% CI = 10.4% to 13.1%) to 21.3% (95% CI = 20.2% to 22.4%) during 2000-2011. Diagnosis year (per year) (adjusted hazard ratio = 0.96; 95% CI = 0.96 to 0.97) was independently associated with OS in multivariable analysis.

CONCLUSIONS

Primary liver cancer mortality rates have started to decline in the US with demographic and state-level variation. With an increasing detection of localized HCC, the OS of HCC has improved over the past decades.