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ISSN 2097-3497 (Online)
CN 22-1108/R
Volume 41 Issue 8
Aug.  2025
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Article Contents

Analysis of influencing factors and construction of predictive model for HBsAg clearance in patients with HBeAg-negative chronic hepatitis B treated with PEG-IFN-α-2b

DOI: 10.12449/JCH250810
Research funding:

Yunnan Province Science and Technology Plan Project (2017FH001-088)

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  • Corresponding author: MOU Chunyan, 784652835@qq.com (ORCID: 0009-0000-7301-3302); LIU Li, liuli197210@163.com (ORCID: 0000-0001-7712-4931)
  • Accepted Date: 2025-01-21
  • Published Date: 2025-08-25
  •   Objective  To investigate the predictive factors for the occurrence of HBsAg clearance in patients with HBeAg-negative chronic hepatitis B (CHB) receiving peginterferon alfa-2b (PEG-IFN-α-2b) treatment, analyze the effects of various indicators on the HBsAg clearance rate under different characteristics, and construct and evaluate a combined predictive model.  Methods  We included 125 patients with HBeAg-negative CHB at Kunming Third People’s Hospital from May 2021 to May 2023. After treatment with PEG-IFN-α-2b combined with nucleoside analogues for a course of 48 weeks, they were divided into HBsAg clearance group and HBsAg non-clearance group. Their general information and serological, biochemical, and virological indicators at different time points during treatment were recorded. Continuous data in normal distribution were compared using the t test. Continuous data in non-normal distribution were compared using the Mann-Whitney U test, and comparisons across different time points were performed using the multiple paired-sample Friedman test. Categorical data were compared using the χ2 test. A Logistic regression analysis was used to select variables to establish a combined multi-parameter predictive model. Receiver operating characteristic (ROC) curves were generated to evaluate the diagnostic value of individual indicators and the combined predictive model for HBsAg clearance.  Results  Before treatment, there were significant differences in baseline HBsAg level (Z=-3.997,P<0.05) and treatment history (χ2=8.221,P<0.05) between the two groups. During treatment, gradually decreasing trends were observed in white blood cell count (χ2=104.944), neutrophil count (χ2=132.036), platelet count (χ2=162.881), and thyroid-stimulating hormone level (TSH,χ2=83.304,all P<0.05), while alanine aminotransferase (ALT,χ2=157.618) and alpha fetoprotein (χ2=159.472) showed gradually increasing trends (both P<0.05). At 48 weeks of treatment, treatment history (odds ratio [OR]=0.232, 95% confidence interval [CI]:0.071‍‍ — ‍‍‍ ‍0.753), baseline HBsAg level (OR=13.423,95%CI:3.276‍ — ‍‍54.997), the extent of decrease in HBsAg from baseline after 12 weeks of treatment (OR=0.143,95%CI:0.040‍ ‍— ‍‍‍ ‍0.515), the maximum ALT level during treatment (OR=0.986,95%CI:0.980‍ — ‍‍0.993), and the minimum TSH level during treatment (OR=3.281,95%CI:1.413‍‍‍ ‍— ‍‍‍7.619) were independent factors affecting HBsAg clearance (all P<0.05). A combined predictive model for HBsAg clearance was built:Y=-1.603-1.462×treatment history+2.597×baseline HBsAg value-1.944×the extent of HBsAg reduction from baseline after 12 weeks of treatment-0.014×the maximum ALT value during treatment+1.188×the minimum TSH value during treatment. The diagnostic value of the individual indicators for HBsAg clearance from high to low was as following: the maximum ALT value during treatment (AUC=0.824), baseline HBsAg value (AUC=0.727), the minimum TSH value during treatment (AUC=0.707), the extent of HBsAg reduction from baseline after 12 weeks of treatment (AUC=0.641), and treatment history (AUC=0.636). The combined model showed better predictive performance than the individual indicators, with the AUC being 0.921 (all P<0.05).  Conclusion  The combined model, constructed with baseline HBsAg value, the extent of HBsAg reduction from baseline after 12 weeks of treatment, the maximum ALT value during treatment, and the minimum TSH value during treatment, has high predictive value for the occurrence of HBsAg clearance in patients with HBeAg-negative CHB after 48 weeks of treatment with PEG-IFN-α-2b, which can provide a reference for identifying suitable patients for treatment and predicting clinical outcome.

     

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