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Naturally occurring genotypic drug-resistant mutations of HBV in Huzhou, China: a single-center study
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Authors Qian F, Zou W, Qin J, Li D
Received 25 August 2017
Accepted for publication 6 October 2017
Published 14 December 2017 Volume 2017:10 Pages 507—509
DOI https://doi.org/10.2147/IDR.S149992
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Akshita Wason
Peer reviewer comments 3
Editor who approved publication: Dr Joachim Wink
Fuchu Qian,1 Weihua Zou,2 Jiqu Qin,1 Dongli Li1
1Huzhou Key Laboratory of Molecular Medicine, 2Department of Laboratory Medicine, Huzhou Central Hospital, Huzhou, China
China is an area with highly endemic hepatitis B virus (HBV) infection, with an estimated 93 million HBV carriers, resulting in approximately 330,000 deaths annually.1 The predominant HBV genotypes in China are genotype B and C. Currently, nucleos(t)ide analogs are used for anti-HBV treatment. However, prolonged antiviral therapy may lead to drug resistance, which is associated with mutations in the reverse transcriptase region of the HBV genome. Several studies have shown that drug-resistant mutations existed in treatment-naïve patients with chronic hepatitis B (CHB). However, the prevalence rates of natural drug-resistant mutations varied in different reports.2,3 Furthermore, the prevalence and clinical profile of natural drug-resistant mutations in CHB patients are not quite clear. Thus, the purpose of this study was to investigate the prevalence and clinical feature of natural drug-resistant mutations among treatmentnaïve CHB patients in a tertiary hospital in Huzhou, eastern China.
In summary, the present study shows that the primary
drug-resistance mutations (rtM204V/I, rtA181T/V,
and rtN236T) and secondary drug-resistance mutations
(rtL80V/I, rtV173L, and rtL180M) existed in treatment naïve
CHB patients in Huzhou, eastern China. Considering
that pre-existing drug-resistant mutations may affect the
efficiency of antiviral therapy, it is necessary to monitor the
nucleos(t)ide analog resistance mutations before antiviral
therapy.
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