Survival following hospitalization with hepatocellular carcinoma among people notified with hepatitis B or C virus in Australia (2000-2014)

Abstract

We assessed trends in HCC survival in patients with hepatitis B virus (HBV) or hepatitis C virus (HCV) infection in New South Wales, Australia. Data on HBV (n = 54,399) and HCV (n = 96,908) notifications (1993-2012) were linked to a hospitalization database (July 2000-June 2014), the New South Wales Cancer Registry, and the New South Wales Death Registry. A total of 725 (1.3%) first HBV-hepatocellular carcinoma (HCC) and 1,309 (1.4%) first HCV-HCC hospitalizations were included. Death occurred in 60.4% of HBV-HCC and 69.6% of HCV-HCC patients. Median survival following first HBV-HCC hospitalization improved from 0.6 years (95% confidence interval [CI] 0.39-1.28) in 2000-2004 to 2.8 years (1.54-5.54) in 2010-2014. Median survival following first HCV-HCC hospitalization was 0.8 years (0.45-1.33) in 2000-2004 and 0.9 (0.67-1.18) in 2010-2014. One-year HBV-HCC survival in 2010-2014 compared to 2000-2004 improved for those with (94% versus 81%) and without (42% versus 33%) potentially curative procedures (liver resection, liver transplantation, and radiofrequency ablation). Factors associated with improved survival following HBV-HCC were later study period (hazard ratio [HR] = 0.74; 95% CI, 0.57-0.97) and potentially curative procedures (liver resection, liver transplantation, and radiofrequency ablation) (HR = 0.23; 95% CI, 0.17-0.29), while male gender (HR = 1.37; 95% CI, 1.03-1.82), human immunodeficiency virus coinfection (HR = 3.06; 95% CI, 1.36-6.88), and Charlson Comorbidity Index ≥3 (HR = 1.81; 95% CI, 1.35-2.40) were associated with reduced survival. Factors associated with improved survival following HCC-HCV were Asia-Pacific country of birth (HR = 0.68; 95% CI, 0.55-0.84) and potentially curative procedures (HR = 0.21; 95% CI, 0.17-0.25), while age (HR = 1.01; 95% CI, 1.01-1.02), rural place of residence (HR = 1.46; 95% CI, 1.22-1.74), and human immunodeficiency virus coinfection (HR = 2.71; 95% CI, 1.19-6.15) were associated with reduced survival. Conclusion: All-cause survival following HBV-HCC has improved considerably, suggesting an impact of more effective antiviral therapy and earlier HCC diagnosis; in contrast, all-cause survival for HCV-HCC is unchanged. (Hepatology Communications 2017;1:736-747).

Figure 1

Kaplan‐Meier graphs of survival probability following first HCC hospitalization by study period among those with (A) HBV notification and (B) HCV notification in NSW, Australia, 2000‐2014.

Figure 2

Kaplan‐Meier graphs of survival probability following first HCC hospitalization by study period among those with HBV notification who received (A) potentially curative procedures and (B) no curative procedures and among those with HCV notification who received (C) potentially curative procedures and (D) no curative procedures in NSW, Australia, 2000‐2014.