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  • Title: Hepatitis B virus reactivation among hepatitis C patients treated with direct-acting antiviral therapies in routine clinical practice.
    Author: Loggi E, Gitto S, Galli S, Minichiello M, Conti F, Grandini E, Scuteri A, Vitale G, Di Donato R, Cursaro C, Furlini G, Andreone P.
    Journal: J Clin Virol; 2017 Aug; 93():66-70. PubMed ID: 28654775.
    Abstract:
    BACKGROUND: Hepatitis B (HBV) reactivation in chronic hepatitis C (CHC) patients treated with IFN-free direct acting antiviral (DAA) therapies has recently emerged as a potential risk. Given the potential burden of this issue, further data are needed to establish its actual clinical impact. OBJECTIVES: The aim of the present study was to analyze the occurrence of HBV reactivation in a cohort of CHC patient treated with DAAs in routine clinical practice. STUDY DESIGN: Consecutive CHC patients with different genotypes, treated with DAA between January 2015 and January 2016 were included in the study. Subjects had been tested for HBsAg and anti-HBc antibodies before antiviral therapy. HBV-DNA levels were examined in anti-HBc positive patients at baseline and 24 weeks after the end of treatment. Post-treatment HBsAg determination was performed in case of HBV-DNA positivity. Serum anti-HBs kinetics was analysed in anti-HBs and anti-HBc positive subjects. RESULTS: A cohort of 137 consecutive HCV patients treated with IFN-free regimens in routine clinical practice was evaluated. From this cohort, plasma samples of 44 subjects with positive serology for HBV (anti-HBc positive) were tested for HBV-DNA levels at baseline and 24 weeks after the end of treatment. Two of them were HBsAg-positive, while the others had signs of a past HBV exposure (HBsAg-negative±HBsAb-positive). No reactivation was found in HBcAb-positive and HBsAg-negative subjects. In the two HBsAg-positive, one experienced an increase in HBV-DNA levels of ≥2 log10 IU/mL during treatment. However, the reactivation was without clinical impact and, most important, was followed by HBsAg loss. CONCLUSIONS: Based on our experience, a past HBV infection seems not to be a condition predisposing to HBV reactivation. On the contrary, in HBsAg-positive subjects not in suppressive treatment with nucleos(t)ide analogs, regular monitoring of HBV-DNA during and after DAA treatment should be considered.
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