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. 2022 Jan;55(1):97-107.
doi: 10.1111/apt.16706. Epub 2021 Nov 24.

Increased risk of hepatocellular carcinoma and mortality in chronic viral hepatitis with concurrent fatty liver

Mi Na Kim  1   2 , Kyungdo Han  3 , Juhwan Yoo  4 , Seong Gyu Hwang  1 , Sang Hoon Ahn  5
Affiliations

Increased risk of hepatocellular carcinoma and mortality in chronic viral hepatitis with concurrent fatty liver

Mi Na Kim et al. Aliment Pharmacol Ther. 2022 Jan.

Abstract

Background: Population-based data are lacking regarding whether fatty liver is a risk factor for hepatocellular carcinoma (HCC) and mortality in patients with chronic viral hepatitis.

Aim: To investigate the association of fatty liver with HCC incidence and mortality in patients with chronic viral hepatitis using a nationwide cohort METHODS: We included 57,385 patients with chronic hepatitis B (CHB) or chronic hepatitis C (CHC) who underwent health examinations. The patients were divided into three groups: no fatty liver, fatty liver index (FLI) <30, grade 1 (G1) fatty liver: 30≤ FLI <60, and grade 2 (G2) fatty liver: FLI >60.

Results: During a median 8.4-year follow-up, we documented 3496 HCC cases and 4146 deaths. Compared to patients with no fatty liver (n = 35,018), the risk of HCC was significantly higher in patients with G1 fatty liver (n = 14,544) (adjusted hazard ratio [aHR] = 1.50, 95% confidence interval [CI] = 1.38-1.64) and G2 fatty liver (n = 7,823) (aHR = 1.88, 95% CI = 1.67-2.12). The risk of mortality was significantly higher in patients with G1 fatty liver (aHR = 1.53, 95% CI = 1.41-1.66) and G2 fatty liver (aHR = 2.16, 95% CI = 1.94-2.42) compared to patients with no fatty liver.

Conclusions: Concurrent fatty liver was associated with a higher risk of HCC and mortality in patients with chronic viral hepatitis. Our results suggest the importance of management of fatty liver to reduce the risks of HCC and mortality in patients with chronic viral hepatitis.

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