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Abstract
ObjectiveThis study aimed to examine the correlations between serum hepatitis B core-related antigen (HBcrAg) and hepatitis B surface antigen (HBsAg) titers in patients with hepatitis B cirrhosis and a hepatitis B virus (HBV)-DNA-negative status.MethodsWe retrospectively analyzed the data and blood samples of patients who were diagnosed with HBV liver cirrhosis and an HBV-DNA negative status. These patients were hospitalized between October 2018 and October 2019 at one hospital.ResultsA total of 180 patients were included. The median (interquartile range) HBsAg and HBcrAg concentrations were 2.77 log10 IU/mL (1.60–3.15) and 3.96 log10 U/mL (2.70–4.97), respectively. A non-linear significant relationship was found between HBsAg and HBcrAg concentrations. The inflection point was 0.58. The effect size and confidence interval on the left and right sides of the inflection point were 0.10 (−0.23–0.42) and 0.62 (0.46–0.78), respectively. When HBsAg concentrations were ≥0.58 log10 IU/mL, HBsAg concentrations were positively correlated with HBcrAg concentrations. When HBsAg concentrations increased by 1 log10 IU/mL, HBcrAg concentrations increased by 0.62 log10 U/mL (95% confidence interval: 0.46, 0.78).ConclusionsThere might be a non-linear relationship between HBcrAg and HBsAg concentrations in patients with hepatitis B cirrhosis and an HBV-DNA-negative status.
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