BACKGROUND: A few cases of hepatitis B virus (HBV) reactivation during anti-viral therapy against hepatitis C (HCV) have been reported. However, the information regarding the real impact of this phenomenon is scarce. AIM: To evaluate the risk of HBV reactivation during anti-viral therapy against HCV with an interferon-free regimen with direct-acting anti-virals (DAAs). METHODS: Observational and prospective study of 352 patients receiving DAAs therapy between September 2015 and May 2016. HBV-DNA and ALT levels were monitored at baseline, at week 4 of anti-viral therapy, at end of treatment and 12 weeks after treatment discontinuation in patients with HBV surface antigen (HBsAg) positive or HBV core antibody (anti-HBc) positive before starting anti-viral therapy. RESULTS: Ten (2.8%) and 64 (18%) patients were HBsAg and anti-HBc positive at baseline, respectively. Five (50%) of 10 HBsAg positive and one (1.6%) of 64 anti-HBc positive patients presented HBV virological reactivation (>1log increase in HBV-DNA levels). None of these patients presented clinical reactivation (increase in ALT levels). CONCLUSIONS: HBV virological reactivation is frequent in HBsAg+ patients receiving anti-viral therapy against HCV. However, HBV-DNA elevations were modest (<20 000 IU/mL) and without clinical impact (no ALT elevation).
BACKGROUND: A few cases of hepatitis B virus (HBV) reactivation during anti-viral therapy against hepatitis C (HCV) have been reported. However, the information regarding the real impact of this phenomenon is scarce. AIM: To evaluate the risk of HBV reactivation during anti-viral therapy against HCV with an interferon-free regimen with direct-acting anti-virals (DAAs). METHODS: Observational and prospective study of 352 patients receiving DAAs therapy between September 2015 and May 2016. HBV-DNA and ALT levels were monitored at baseline, at week 4 of anti-viral therapy, at end of treatment and 12 weeks after treatment discontinuation in patients with HBV surface antigen (HBsAg) positive or HBV core antibody (anti-HBc) positive before starting anti-viral therapy. RESULTS: Ten (2.8%) and 64 (18%) patients were HBsAg and anti-HBc positive at baseline, respectively. Five (50%) of 10 HBsAg positive and one (1.6%) of 64 anti-HBc positive patients presented HBV virological reactivation (>1log increase in HBV-DNA levels). None of these patients presented clinical reactivation (increase in ALT levels). CONCLUSIONS:HBV virological reactivation is frequent in HBsAg+ patients receiving anti-viral therapy against HCV. However, HBV-DNA elevations were modest (<20 000 IU/mL) and without clinical impact (no ALT elevation).
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