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Updated: Aug 20, 2026

Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection
Published on: November 7, 2018
[Hot-point mutations of viral C gene during hepatitis B virus infection]
Insights
Hepatitis B virus (HBV) C gene mutations are linked to disease progression. These mutations are common in chronic active hepatitis and liver cirrhosis, indicating a connection to disease activity.
Area of Science:
- Hepatology
- Virology
- Molecular Biology
Context:
- Hepatitis B virus (HBV) infection is a significant global health concern.
- Understanding HBV genetic variations is crucial for managing disease progression.
- The precore (pre-C) and core (C) gene regions are known to harbor mutations affecting viral activity.
Purpose:
- To investigate the association between specific HBV C gene mutations (pre-C stop28 and C region L97) and the clinical progression of hepatitis B.
- To determine the prevalence of these mutations across different stages of HBV infection, from acute to chronic active disease and cirrhosis.
Summary:
- A study examined 91 hepatitis patients using RFLP to detect pre-C stop28 and C region L97 mutations.
- These mutations were rarely found in acute hepatitis B and asymptomatic carriers but frequently observed in chronic active hepatitis (CAH) and active liver cirrhosis (ALC) (80% and 78%, respectively).
- Both mutant and wild strains were found to coexist in patients, suggesting a dynamic viral population related to disease activity.
Impact:
- Identifies specific HBV C gene mutations as potential biomarkers for predicting disease severity.
- Highlights the correlation between HBV C gene mutations and liver disease activity, aiding in clinical assessment.
- Provides insights into the complex interplay between HBV genotypes and disease pathogenesis, informing therapeutic strategies.
Abstract:
To investigate the relationship of the HBV C gene mutations with the disease progress, the hotpoint mutations of pre- C stop28 and C region L97 were examined with restrictio-fragment-length-polymorphism (RFLP) technique in 91 hepatitis patients with diverse clinical features and HBe status. Both mutations were almost not seen in acute hepatitis B and chronic asymptomatic virus carriers; rarely in chronic persistent hepatitis and frequently in chronic active hepatitis (CAH) and active liver cirrhosis (ALC), accounting for 80% and 78% in CAH and ALC respectively. The pre-C mutant was mixed with wild strain in 11 of 31 patients who were HBeAg-positive CAH and ALC; on the other hand, the wild strain also coexisted with variant in anti-HBe-positive cases. So did the L97 in both HBeAg- and anti- HBe-positive cases. Possibly, both the mutant and the wild strain are usually in a relatively growth and decline status. So, the hot-point mutations of HBV C gene were closely related with the disease activity.
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