HBV-HCV Coinfection: Viral Interactions, Management, and Viral Reactivation
Marianna G Mavilia1, George Y Wu1
1Department of Medicine, Division of Gastroenterology-Hepatology, University of Connecticut Health Center, Farmington, CT, USA.
Insights
Hepatitis B virus (HBV) and hepatitis C virus (HCV) coinfection accelerates liver disease progression and hepatocellular carcinoma risk. Treatment strategies require careful consideration to prevent HBV reactivation, as no definitive guidelines exist.
Area of Science:
- Hepatology
- Virology
- Clinical Medicine
Background:
- Hepatitis B virus (HBV) and hepatitis C virus (HCV) coinfection affects 1-15% worldwide.
- Coinfection typically leads to faster disease progression and higher rates of hepatocellular carcinoma compared to monoinfection.
- HCV replication dominates over HBV in coinfected individuals.
Purpose of the Study:
- To review and evaluate the efficacy of direct-acting antivirals and interferon-based therapies for HBV-HCV coinfection.
- To assess the rates of HBV reactivation associated with different treatment regimens.
- To highlight the importance of screening and prevention strategies.
Main Methods:
- Systematic review of clinical studies on antiviral therapies for HBV-HCV coinfection.
- Appraisal of studies focusing on direct-acting antivirals and interferon-based treatments.
- Analysis of reported efficacy and HBV reactivation rates.
Main Results:
- Interferon-based and direct-acting antiviral therapies show variable efficacy in treating HBV-HCV coinfection.
- Treatment of HCV without concurrent HBV suppression increases the risk of HBV reactivation.
- No established treatment guidelines currently exist for HBV-HCV coinfection.
Conclusions:
- Careful management is crucial for HBV-HCV coinfected patients to prevent severe HBV reactivation.
- Screening and prevention of coinfection are vital public health measures.
- Further research is needed to establish optimal treatment guidelines.
Abstract:
Hepatitis B virus (HBV) and hepatitis C virus (HCV) coinfection is a complex clinical entity that has an estimated worldwide prevalence of 1-15%. Most clinical studies have shown that progression of disease is faster in HBV-HCV coinfected patients compared to those with monoinfection. Hepatocellular carcinoma development appears to have higher rate in coinfections. Viral replication in coinfected cells is characterized by a dominance of HCV over HBV replication. There are no established guidelines for treatment of HBV-HCV coinfection. Studies on interferon-based therapies and direct-acting antivirals have shown varying levels of efficacy. Clinical reports have indicated that treatment of HCV without suppression of HBV increases the risk for HBV reactivation. In this review, we appraise studies on both direct-acting antivirals and interferon-based therapies to evaluate the efficacy and rates of reactivation with each regimen. Screening for and prevention of coinfection are important to prevent serious HBV reactivations.
Related Concept Videos
Viral Recombination
Viral Structure
Pharmacokinetics: Drug–Food and Drug–Viral Interactions
Viral Mutations
Size and Structure of Viral Genomes
Viral Replication: Lytic Cycle


