Serum Mac-2-binding protein glycosylation isomer and risk of hepatocellular carcinoma in entecavir-treated chronic hepatitis B patients.
JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY(2019)
Abstract
Background and Aim Hepatocellular carcinoma (HCC) can still develop in chronic hepatitis B (CHB) patients receiving antiviral treatment. Serum Mac-2-binding protein glycosylation isomer (M2BPGi) is a novel marker for liver fibrosis. We investigated its role on incidence of HCC in entecavir (ETV)-treated CHB patients. Methods We identified HCC cases diagnosed at >= 1 year of ETV treatment. CHB patients without HCC (matched for age, gender, baseline hepatitis B virus-DNA, and duration of ETV treatment) were identified in approximately 1:2 ratio (HCC: non-HCC) for comparison. Serum samples were retrieved at baseline (initiation of ETV), 3, and 5 years of ETV for serum M2BPGi measurement (expressed in cut-off index [COI]). Results One hundred HCC cases were matched with 185 CHB patients without HCC (median age 56.7 years, 78.9% male, baseline hepatitis B virus-DNA 5.6 logIU/mL, and median follow-up 7.1 years). Median time from ETV initiation to incident HCC was 3.9 years. Serum M2BPGi levels were significantly higher in HCC cases compared with controls at baseline and year 3 (1.25 vs 0.98 [P = 0.004], 0.89 vs 0.74 [P = 0.018] COI, respectively). Multivariate analysis showed that baseline M2BPGi was the only independent factor associated with incident HCC (odds ratio 1.241, 95% confidence interval 1.039-1.482, P = 0.017). Using a cut-off value of 1.15 COI, the sensitivity, specificity, positive predictive value, and negative predictive value of baseline serum M2BPGi in cirrhotic patients to predict incident HCC were 90%, 53.8%, 69.6%, and 82.1%, respectively. Conclusions Baseline and 3-year serum M2BPGi may be useful to identify high risk patients on antiviral treatment for subsequent HCC development.
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Key words
biomarker,chronic hepatitis B,entecavir,hepatocellular carcinoma,M2BPGi
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