Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practice

Background and Aims: Entecavir (ETV) resistance of hepatitis B virus (HBV) conventionally requires rt184, 202, or 250 mutations plus lamivudine-resistance mutation (rtM204V/I ± L180M). This study aimed to clarify whether rtL180M+A181C+M204V mutations may contribute to HBV ETV resistance.Methods: Ser...

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Main Authors: Yan Liu, Yi Zhou, Xiaodong Li, Ming Niu, Rongjuan Chen, Jinman Shao, Lanlan Si, Dan Luo, Yayun Lin, Le Li, Kai Zhang, Xiaohe Xiao, Zhihui Xu, Min Liu, Mengji Lu, Fabien Zoulim, Dongping Xu
Format: Article
Language:English
Published: Taylor & Francis Group 2019-01-01
Series:Emerging Microbes and Infections
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Online Access:https://www.tandfonline.com/doi/10.1080/22221751.2019.1584018
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author Yan Liu
Yi Zhou
Xiaodong Li
Ming Niu
Rongjuan Chen
Jinman Shao
Lanlan Si
Dan Luo
Yayun Lin
Le Li
Kai Zhang
Xiaohe Xiao
Zhihui Xu
Min Liu
Mengji Lu
Fabien Zoulim
Dongping Xu
author_facet Yan Liu
Yi Zhou
Xiaodong Li
Ming Niu
Rongjuan Chen
Jinman Shao
Lanlan Si
Dan Luo
Yayun Lin
Le Li
Kai Zhang
Xiaohe Xiao
Zhihui Xu
Min Liu
Mengji Lu
Fabien Zoulim
Dongping Xu
author_sort Yan Liu
collection DOAJ
description Background and Aims: Entecavir (ETV) resistance of hepatitis B virus (HBV) conventionally requires rt184, 202, or 250 mutations plus lamivudine-resistance mutation (rtM204V/I ± L180M). This study aimed to clarify whether rtL180M+A181C+M204V mutations may contribute to HBV ETV resistance.Methods: Serum samples were collected from 22,009 patients who underwent resistance testing in Beijing 302 Hospital from 2007 to 2016. HBV reverse transcriptase (RT) gene was screened by direct sequencing and verified by clonal sequencing. Phenotypic analysis was performed for evaluating replication capacity and drug susceptibility.Results: Classical ETV-resistance mutations of HBV were detected in 1252 patients who were receiving ETV therapy. The rtA181C mutation was detected with rtL180M+M204V mutations in 18 lamivudine-experienced ETV-treated patients, and the emergence of the mutations was associated with virological breakthrough or inadequate virological response to ETV. Patient-derived representative rtA181C-containing mutants, rtL180M+A181C+M204V, rtL180M+A181C+M204V+M250V, and rtL180M+A181C+S202G+M204V, exhibited 45.7%, 25.9%, and 25.0% replication capacity and 85.6-, 356.1-, and 307.1-fold decreased susceptibility to ETV respectively compared to the wild-type strain, while the three mutants remained sensitive to tenofovir (TDF). Artificial elimination of rtA181C largely restored the rtL180M+A181C+M204V mutant’s sensitivity to ETV. Molecular modelling of viral RT binding to ETV showed that the rtL180M+A181C+M204V mutant had a less stable conformation compared to rtL180M+M204V mutant. In clinical practice, undetectable serum HBV DNA was achieved in two of five longitudinally followed rtA181C-positive patients who received switching-to TDF therapy, but not in the other three who received add-on adefovir therapy during observation.Conclusions: Both clinical and experimental data support rtL180M+A181C+M204V as a novel non-classical ETV-resistance mutation pattern.
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spelling doaj-art-cab747cf42ba45dfafd7d59773844b3e2025-08-20T03:17:54ZengTaylor & Francis GroupEmerging Microbes and Infections2222-17512019-01-018135436510.1080/22221751.2019.1584018Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practiceYan Liu0Yi Zhou1Xiaodong Li2Ming Niu3Rongjuan Chen4Jinman Shao5Lanlan Si6Dan Luo7Yayun Lin8Le Li9Kai Zhang10Xiaohe Xiao11Zhihui Xu12Min Liu13Mengji Lu14Fabien Zoulim15Dongping Xu16Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaDepartment of Infectious Diseases, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, People’s Republic of ChinaInstitute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaInstitute of Chinese Medicine, Beijing 302 Hospital, Beijing, People’s Republic of ChinaInstitute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaInstitute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaInstitute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaDepartment of Infectious Diseases, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, People’s Republic of ChinaDepartment of Infectious Diseases, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, People’s Republic of ChinaInstitute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaDepartment of Infectious Diseases, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, People’s Republic of ChinaInstitute of Chinese Medicine, Beijing 302 Hospital, Beijing, People’s Republic of ChinaInstitute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaDepartment of Infectious Diseases, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, People’s Republic of ChinaInstitute of Virology, University Hospital of Essen, University of Duisburg-Essen, Essen, GermanyUniv Lyon, Universite Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Leon Berard, Centre de recherche en cancerologie de Lyon, Lyon, FranceInstitute of Infectious Diseases, Beijing 302 Hospital, Beijing, People’s Republic of ChinaBackground and Aims: Entecavir (ETV) resistance of hepatitis B virus (HBV) conventionally requires rt184, 202, or 250 mutations plus lamivudine-resistance mutation (rtM204V/I ± L180M). This study aimed to clarify whether rtL180M+A181C+M204V mutations may contribute to HBV ETV resistance.Methods: Serum samples were collected from 22,009 patients who underwent resistance testing in Beijing 302 Hospital from 2007 to 2016. HBV reverse transcriptase (RT) gene was screened by direct sequencing and verified by clonal sequencing. Phenotypic analysis was performed for evaluating replication capacity and drug susceptibility.Results: Classical ETV-resistance mutations of HBV were detected in 1252 patients who were receiving ETV therapy. The rtA181C mutation was detected with rtL180M+M204V mutations in 18 lamivudine-experienced ETV-treated patients, and the emergence of the mutations was associated with virological breakthrough or inadequate virological response to ETV. Patient-derived representative rtA181C-containing mutants, rtL180M+A181C+M204V, rtL180M+A181C+M204V+M250V, and rtL180M+A181C+S202G+M204V, exhibited 45.7%, 25.9%, and 25.0% replication capacity and 85.6-, 356.1-, and 307.1-fold decreased susceptibility to ETV respectively compared to the wild-type strain, while the three mutants remained sensitive to tenofovir (TDF). Artificial elimination of rtA181C largely restored the rtL180M+A181C+M204V mutant’s sensitivity to ETV. Molecular modelling of viral RT binding to ETV showed that the rtL180M+A181C+M204V mutant had a less stable conformation compared to rtL180M+M204V mutant. In clinical practice, undetectable serum HBV DNA was achieved in two of five longitudinally followed rtA181C-positive patients who received switching-to TDF therapy, but not in the other three who received add-on adefovir therapy during observation.Conclusions: Both clinical and experimental data support rtL180M+A181C+M204V as a novel non-classical ETV-resistance mutation pattern.https://www.tandfonline.com/doi/10.1080/22221751.2019.1584018Hepatitis B virusnucleoside/nucleotide analoguesentecavir resistancemutationrtA181Cantiviral therapy
spellingShingle Yan Liu
Yi Zhou
Xiaodong Li
Ming Niu
Rongjuan Chen
Jinman Shao
Lanlan Si
Dan Luo
Yayun Lin
Le Li
Kai Zhang
Xiaohe Xiao
Zhihui Xu
Min Liu
Mengji Lu
Fabien Zoulim
Dongping Xu
Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practice
Emerging Microbes and Infections
Hepatitis B virus
nucleoside/nucleotide analogues
entecavir resistance
mutation
rtA181C
antiviral therapy
title Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practice
title_full Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practice
title_fullStr Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practice
title_full_unstemmed Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practice
title_short Hepatitis B virus mutation pattern rtL180M+A181C+M204V may contribute to entecavir resistance in clinical practice
title_sort hepatitis b virus mutation pattern rtl180m a181c m204v may contribute to entecavir resistance in clinical practice
topic Hepatitis B virus
nucleoside/nucleotide analogues
entecavir resistance
mutation
rtA181C
antiviral therapy
url https://www.tandfonline.com/doi/10.1080/22221751.2019.1584018
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