Influence of GB virus-C/hepatitis G virus infection on the long-term course of chronic hepatitis B
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Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection
Published on: November 7, 2018
G Fattovich1, M L Ribero, S Favarato
1Istituto di Patologia Speciale Medica, Cattedra di Medicina Interna, University of Verona, Italy.
Insights
GB virus-C/hepatitis G virus (GBV-C/HGV) coinfection in chronic hepatitis B did not alter liver disease outcomes. Persistent HGV infection was associated with biochemical remission, but did not change the overall course of chronic hepatitis B.
Area of Science:
- Hepatology
- Virology
- Infectious Diseases
Background:
- The clinical significance of GB virus-C/hepatitis G virus (GBV-C/HGV) in chronic hepatitis B remains unclear.
- Investigating the role of GBV-C/HGV in the progression and outcome of liver disease is crucial.
Purpose of the Study:
- To investigate the role of GBV-C/HGV infection in the clinical outcome of chronic hepatitis B.
- To determine the prevalence and persistence of GBV-C/HGV in patients with chronic hepatitis B.
Main Methods:
- Studied HGV-RNA and anti-E2 antibody in 125 chronic hepatitis B patients, 82 HBsAg carriers, and 103 healthy adults.
- Assessed viral markers in patients with and without co-infections (HDV, HCV) and in high-risk groups (drug addicts).
- Followed patients for 1-11 years to evaluate the impact of persistent HGV infection on disease activity and remission.
Main Results:
- HGV-RNA prevalence was higher in chronic hepatitis B patients with HDV/HCV co-infection (29%) compared to HBV alone (6%).
- Overall GBV-C/HGV marker prevalence was similar across healthy adults, HBsAg carriers, and chronic hepatitis B patients without co-infections.
- Persistent HGV infection in chronic hepatitis B was associated with a higher rate of sustained biochemical remission (400%) compared to HGV clearance (80% disease activity).
Conclusions:
- GBV-C/HGV exposure rates in chronic HBV infection are similar to healthy adults, except in high-risk populations.
- Long-lasting GBV-C/HGV coinfection or seroconversion did not significantly alter the clinical course of chronic hepatitis B.
- While persistent HGV infection may correlate with biochemical remission, it does not appear to modify the overall disease progression in chronic hepatitis B.
Aims/Background:
The clinical significance of GB virus-C/hepatitis G virus (GBV-C/HGV) infection in chronic hepatitis B is not well known and its role in the outcome of liver disease was investigated.
Methods:
HGV-RNA and antibody to HGV (anti-E2) were studied in 125 patients with chronic hepatitis B (41 with multiple hepatitis virus exposure), 82 asymptomatic HBsAg carriers and 103 healthy adults.
Results:
In chronic hepatitis B, HGV-RNA was more frequent in patients with HDV infection and/or anti-HCV positivity than in those without (29% vs 6%, p<0.0001), mainly in drug addicts (38%). At diagnosis the overall prevalence of any marker (HGV-RNA plus anti-E2) was similar in chronic hepatitis due to HBV alone (17%), in HBsAg carriers (16%) and in healthy adults (17%) and increased to 58% in those exposed to HDV and/or HCV. During 1-11 years of follow-up, HGV infection persisted in 70% of patients with chronic hepatitis B. About 400% of HGV persistently coinfected patients underwent sustained biochemical remission, whereas continuing disease activity was observed in 80% of patients who cleared HGV-RNA.
Conclusions:
In chronic HBV infection the rate of exposure to HGV is similar to that in healthy adults, except for high risk patients. Long lasting HGV coinfection or anti-E2 seroconversion did not modify the course of chronic hepatitis B.
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