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Updated: Feb 2, 2026

Development of a Hepatitis B Virus Reporter System to Monitor the Early Stages of the Replication Cycle
Published on: February 1, 2017
Hepatitis B virus in patients with chronic hepatitis C treated with direct antiviral agents
María Luisa Gutiérrez García1, María Luisa Manzano Alonso2, Juan Ángel Ferrer Rosique3
1Digestivo, HUFA, España.
Insights
Hepatitis B virus (HBV) reactivation is common but not clinically relevant in hepatitis C virus (HCV) patients treated with direct-acting antivirals (DAAs). HBV screening rates are high in this population.
Area of Science:
- Hepatology
- Virology
- Infectious Diseases
Background:
- Direct-acting antiviral (DAA) treatment for hepatitis C virus (HCV) has raised concerns about potential hepatitis B virus (HBV) reactivation.
- Understanding HBV/HCV coinfection and reactivation is crucial for patient management during DAA therapy.
Purpose of the Study:
- To determine the prevalence of HBV/HCV coinfection and the incidence/clinical relevance of HBV reactivation in HCV patients treated with DAAs in Madrid.
- To assess HBV screening rates among HCV patients in the region.
Main Methods:
- A cohort of 1,337 HCV patients treated with DAAs between January 2015 and June 2017 in South Madrid was analyzed.
- Prevalence of HBsAg positivity and previous HBV infection markers were recorded.
- Incidence and clinical significance of HBV reactivation were monitored.
Main Results:
- The prevalence of HBsAg positive HBV infection was low (0.67%).
- Virological HBV reactivation occurred in 50% of HBsAg positive patients without prior treatment, but without biochemical relevance.
- Patients with previous HBV infection markers showed normal transaminases throughout treatment and follow-up.
- The HBV screening rate reached 92.9%.
Conclusions:
- HBV prevalence is low in HCV patients in the studied area of Madrid.
- HBV reactivation in HBsAg positive patients on DAAs is frequent but clinically insignificant.
- High HBV screening rates are observed in HCV patients eligible for DAA treatment in this region.
Introduction:
cases of hepatitis B virus (HBV) reactivation have been reported in patients with hepatitis C virus (HCV) treated with direct antiviral agents (DAA).
Objectives And Methods:
the main objectives of the present study are: a) to determine the prevalence of HBV/HCV coinfection in HCV patients treated with DAAs in the Autonomous Community of Madrid (CM) and also to determine the incidence and clinical relevance of HBV reactivation; and b) to determine the HBV screening rates in HCV patients in our region. For that purpose, 1,337 HCV patients were consecutively treated with DAAs in two hospitals located in South CM between January 2015 and June 2017.
Results:
nine of the 1,337 (0.67%) participants were HBsAg positive and 356 (26.6%) had previous HBV infection markers. Two of the four (50%) HBsAg positive patients with untreated HBV developed a virological reactivation, but not a biochemical reaction. Of the 356 patients with previous HBV infection markers, all had normal transaminases at the end of treatment and during follow-up. The HBV screening rate amounted to 92.9% of the cohort.
Conclusions:
the prevalence of HBV (HBsAg positive) infection in patients with chronic hepatitis C in the southern area of the CM is low. HBV reactivation in HBsAg positive patients treated with DAAs is common, although without clinical relevance. In our region, there is a high rate of HBV screening in patients with HCV that are likely treated with DAAs.
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