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Molecular and Genetic Characterization of Hepatitis B Virus (HBV) among Saudi Chronically HBV-Infected Individuals. Viruses 2023; 15:v15020458. [PMID: 36851671 PMCID: PMC9964524 DOI: 10.3390/v15020458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/10/2023] Open
Abstract
The study aimed to characterize the genotype and subgenotypes of HBV circulating in Saudi Arabia, the presence of clinically relevant mutations possibly associated with resistance to antivirals or immune escape phenomena, and the possible impact of mutations in the structural characteristics of HBV polymerase. Plasma samples from 12 Saudi Arabian HBV-infected patients were analyzed using an in-house PCR method and direct sequencing. Saudi patients were infected with mainly subgenotype D1. A number of mutations in the RT gene (correlated to antiviral resistance) and within and outside the major hydrophilic region of the S gene (claimed to influence immunogenicity and be related to immune escape) were observed in almost all patients. Furthermore, the presence of mutations in the S region caused a change in the tertiary structure of the protein compared with the consensus region. Clinical manifestations of HBV infection may change dramatically as a result of viral and host factors: the study of mutations and protein-associated cofactors might define possible aspects relevant for the natural and therapeutic history of HBV infection.
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2
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Iannetta M, Crea AMA, Di Lorenzo A, Campogiani L, Teti E, Malagnino V, Compagno M, Coppola L, Piermatteo L, Palmieri G, Cimino C, Salpini R, Zingaropoli MA, Ciardi MR, Mastroianni CM, Parisi SG, Svicher V, Andreoni M, Sarmati L. Hepatitis B-related hepatic flare during immune reconstitution syndrome after antiretroviral treatment initiation in an HBV surface antigen-positive patient with HIV: viroimmunological and histological characterization. Open Forum Infect Dis 2022; 9:ofac451. [PMID: 36092833 PMCID: PMC9454030 DOI: 10.1093/ofid/ofac451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/26/2022] [Indexed: 11/18/2022] Open
Abstract
HIV and hepatitis B virus (HBV) coinfection is relatively common. Initiation of antiretroviral therapy (ART) in people with HIV (PWH) causes a progressive restoration of cell-mediated immune functions. In the presence of overt or occult coinfections, immune restoration might lead to immune reconstitution inflammatory syndrome (IRIS). Here, we describe the clinical, immunological, virological, and histological characterization of a case of HBV-related IRIS hepatitis in a PWH after ART initiation. A liver biopsy was performed during HBV-related IRIS hepatic flare, and liver samples were analyzed through immunohistochemistry and molecular techniques, with the assessment of intrahepatic HBV-DNA, covalently closed circular DNA, and HBV pregenomic RNA through a droplet digital polymerase chain reaction system. Immune activation and senescence were also longitudinally assessed. In this clinical case, the hepatic flare occurred 6 weeks after ART initiation with a therapeutic regimen including tenofovir alafenamide (TAF) and emtricitabine (FTC). The episode was self-limiting, characterized by hyperactivation of peripheral blood CD4+ and CD8+ T-lymphocytes, and resolved without ART discontinuation, leading to the achievement of HBsAg seroconversion (HBsAg-/HBsAb+) and HBV-DNA plasma undetectability. Notably, hyperactivation of the immune system plays a pivotal role in promoting the control of HBV replication, thus triggering the achievement of HBsAg seroconversion during treatment with TAF/FTC.
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Affiliation(s)
- M Iannetta
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - A M A Crea
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - A Di Lorenzo
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - L Campogiani
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - E Teti
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - V Malagnino
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - M Compagno
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - L Coppola
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - L Piermatteo
- Department of Experimental Medicine, Tor Vergata University , Rome , Italy
| | - G Palmieri
- Department of Biomedicine and Prevention, Tor Vergata University , Rome , Italy
| | - C Cimino
- Department of Biomedicine and Prevention, Tor Vergata University , Rome , Italy
| | - R Salpini
- Department of Experimental Medicine, Tor Vergata University , Rome , Italy
| | - M A Zingaropoli
- Department of Public Health and Infectious Diseases, Sapienza University , Rome , Italy
| | - M R Ciardi
- Department of Public Health and Infectious Diseases, Sapienza University , Rome , Italy
| | - C M Mastroianni
- Department of Public Health and Infectious Diseases, Sapienza University , Rome , Italy
| | - S G Parisi
- Department of Molecular Medicine, University of Padova , Padua , Italy
| | - V Svicher
- Department of Experimental Medicine, Tor Vergata University , Rome , Italy
- Department of Biology, Tor Vergata University , Rome , Italy
| | - M Andreoni
- Department of System Medicine, Tor Vergata University , Rome , Italy
| | - L Sarmati
- Department of System Medicine, Tor Vergata University , Rome , Italy
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3
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Distribution of Hepatitis B Virus Genotypes, Subgenotypes, and Prevalence of Hepatitis B Virus Mutations in Untreated Patients With Chronic Hepatitis B From Mekong Delta. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2021. [DOI: 10.1097/ipc.0000000000000990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Hosseini SY, Sanaei N, Fattahi MR, Malek-Hosseini SA, Sarvari J. Association of HBsAg mutation patterns with hepatitis B infection outcome: Asymptomatic carriers versus HCC/cirrhotic patients. Ann Hepatol 2020; 18:640-645. [PMID: 31105017 DOI: 10.1016/j.aohep.2018.12.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/19/2018] [Accepted: 12/03/2018] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES The hepatitis B virus (HBV) surface antigen (HBsAg) variations suggested having some effects on infection outcome. Due to some controversial issues, the aim of this study was to compare the pattern of HBsAg variation between asymptomatic carriers and HCC/cirrhosis patients. MATERIALS AND METHODS In this cross-sectional study, 19 HCC/cirrhotic and 26 asymptomatic patients were enrolled. After viral DNA extraction, HBs gene was amplified using an in-house nested-PCR. Then, PCR products were introduced into bi-directional Sanger sequencing. The retrieved sequences were compared with references, to investigate the variation of immunologic sites, major hydrophilic region (MHR) of HBsAg as well as reverse transcriptase (RT), and also to determine genotype/subtype. RESULTS The analysis of MHR and epitopes on HBsAg showed dozens of substitution, which occurred more prevalently in I110, P120, Y134, G159, S193, Y206, S207, I208, L213 and P214 positions. However, Y134N/F/L (P=0.04) and P120T/S (P=0.009) were significantly detected in MHR and B-cell epitope of HCC/Cirrhotic group. A number of truncation-related mutations were higher in HCC/Cirrhotic group (P>0.001), albeit only C69* stop codon was statistically significant (P=0.003). In RT, some potentially resistant substitutions such as Q215S, V191I and V214A, were revealed. Phylogenetic analysis showed that all of isolates belonged to genotype D, and the major serotype was ayw1. CONCLUSION The higher frequency of substitutions in MHR and immune epitopes at positions such as Y134 and P120 as well as stop codons such as C69* in HCC/cirrhotic group might candidate them as predictive factors for infection outcome.
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Affiliation(s)
- Seyed Y Hosseini
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Neda Sanaei
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohamad-Reza Fattahi
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Jamal Sarvari
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran; Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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Qian F, Zou W, Jin F, Li D, Shen Y. Prevalence of Potential Resistance Related Variants Among Chinese Chronic Hepatitis B Patients Not Receiving Nucleos(T)ide Analogues. Infect Drug Resist 2020; 13:2407-2416. [PMID: 32765014 PMCID: PMC7381783 DOI: 10.2147/idr.s249476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 06/24/2020] [Indexed: 12/15/2022] Open
Abstract
Background and Aims Potential drug resistance (DR) related variants in the hepatitis B virus (HBV) reverse transcriptase (RT) region may be associated with the effectiveness of antiviral drugs and disease progression. The aim of this study was to investigate the prevalence and clinical characteristics of potential DR-related variants in Chinese CHB patients not receiving nucleos(t)ide analogues (NAs). Patients and Methods Two hundred and six untreated CHB patients from Huzhou Central Hospital in eastern China were recruited for this study. The serum DNA was extracted and the HBV RT region was amplified using nest polymerase chain reaction (nest-PCR). The 42 potential DR-related variants were analyzed by direct sequencing. Results Among these CHB patients, HBV genotype B and genotype C were identified in 121 (58.7%) and 85 (41.3%) patients, respectively. Potential DR-related variants were detected in 42.7% (88/206) of patients. Primary and secondary DR variants were found in 7.3% (15/206) of patients, including rtL80I/V, rtI169T, rtV173L rtL180M, rtA181T/V, rtM204I/V, and rtN236T. The variants at rt53, rt82, rt221, rt233, rt237, and rt256 were specific for genotype B, and those at rt38, rt84, rt126, rt139, rt153, rt191, rt214, rt238, and rt242 were specific for genotype C. Moreover, the variation frequency in the A-B interdomain (3.96%) was significantly higher than that in the functional domains (1.17%) and non-A-B interdomains (1.11%). Multivariate logistic regression analysis showed that lower HBV-DNA load (<106 IU/mL) was an independent factor associated with potential DR-related variants in untreated CHB patients (P <0.05). Conclusion Potential DR-related variants were frequent and complex in untreated Chinese CHB patients. Furthermore, the variants may contribute to decreased serum HBV-DNA loads. However, the effects of potential DR-related variants on the antiviral therapy and liver disease progression require further study.
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Affiliation(s)
- Fuchu Qian
- Department of Precision Medicine, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China.,Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China
| | - Weihua Zou
- Department of Laboratory Medicine, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China
| | - Fang Jin
- Department of Precision Medicine, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China.,Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China
| | - Dongli Li
- Department of Precision Medicine, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China.,Huzhou Key Laboratory of Molecular Medicine, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China
| | - Yujuan Shen
- Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, People's Republic of China
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Bellocchi MC, Aragri M, Carioti L, Fabeni L, Pipitone RM, Brancaccio G, Sorbo MC, Barbaliscia S, Di Maio VC, Bronte F, Grimaudo S, Mazzucco W, Frigeri F, Cantone M, Pinto A, Perno CF, Craxì A, Gaeta GB, Di Marco V, Ceccherini-Silberstein F. NS5A Gene Analysis by Next Generation Sequencing in HCV Nosocomial Transmission Clusters of HCV Genotype 1b Infected Patients. Cells 2019; 8:E666. [PMID: 31269695 PMCID: PMC6678654 DOI: 10.3390/cells8070666] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/19/2019] [Accepted: 06/25/2019] [Indexed: 02/06/2023] Open
Abstract
Background: The aim of the study was to investigate the intra-host variability through next-generation-sequencing (NGS) of the NS5A-gene in nosocomial transmission-clusters observed in two Italian hospitals among hepatitis C virus (HCV)-genotype-1b infected patients. Methods: HCV-sequencing was performed by Sanger-sequencing (NS3 + NS5A + NS5B) and by NGS (NS5A, MiSeq-Illumina) in 15 HCV-1b infected patients [five acute with onco-hematologic-disease and 10 (4/6 acute/chronic) with β-thalassemia]. Resistance-associated-substitutions (RAS) were analysed by Geno2pheno-algorithm. Nucleotide-sequence-variability (NSV, at 1%, 2%, 5%, 10% and 15% NGS-cutoffs) and Shannon entropy were estimated. Phylogenetic analysis was performed by Mega6-software and Bayesian-analysis. Results: Phylogenetic analysis showed five transmission-clusters: one involving four HCV-acute onco-hematologic-patients; one involving three HCV-chronic β-thalassemia-patients and three involving both HCV-acute and chronic β-thalassemia-patients. The NS5A-RAS Y93H was found in seven patients, distributed differently among chronic/acute patients involved in the same transmission-clusters, independently from the host-genetic IL-28-polymorphism. The intra-host NSV was higher in chronic-patients versus acute-patients, at all cutoffs analyzed (p < 0.05). Even though Shannon-entropy was higher in chronic-patients, significantly higher values were observed only in chronic β-thalassemia-patients versus acute β-thalassemia-patients (p = 0.01). Conclusions: In nosocomial HCV transmission-clusters, the intra-host HCV quasispecies divergence in patients with acute-infection was very low in comparison to that in chronic-infection. The NS5A-RAS Y93H was often transmitted and distributed differently within the same transmission-clusters, independently from the IL-28-polymorphism.
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Affiliation(s)
| | - Marianna Aragri
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Luca Carioti
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Lavinia Fabeni
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Rosaria Maria Pipitone
- Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) Department, University of Palermo, 90127 Palermo, Italy
| | - Giuseppina Brancaccio
- Infectious Diseases, Department of Mental and Physical Health and Preventive Medicine, Campania University "Luigi Vanvitelli", 80138 Naples, Italy
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy
| | - Maria Chiara Sorbo
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Silvia Barbaliscia
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Velia Chiara Di Maio
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Fabrizio Bronte
- Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) Department, University of Palermo, 90127 Palermo, Italy
| | - Stefania Grimaudo
- Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) Department, University of Palermo, 90127 Palermo, Italy
| | - Walter Mazzucco
- Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) Department, University of Palermo, 90127 Palermo, Italy
| | | | - Marco Cantone
- Infectious Diseases, Department of Mental and Physical Health and Preventive Medicine, Campania University "Luigi Vanvitelli", 80138 Naples, Italy
| | - Antonio Pinto
- Hematology Department, National Cancer Institute "Fondazione Pascale", IRCCS, 80131 Naples, Italy
| | - Carlo Federico Perno
- Department of Microbiology and Clinic Microbiology, University of Milan, 20162 Milan, Italy
| | - Antonio Craxì
- Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) Department, University of Palermo, 90127 Palermo, Italy
| | - Giovanni Battista Gaeta
- Infectious Diseases, Department of Mental and Physical Health and Preventive Medicine, Campania University "Luigi Vanvitelli", 80138 Naples, Italy
| | - Vito Di Marco
- Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) Department, University of Palermo, 90127 Palermo, Italy
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Choi YM, Lee SY, Kim BJ. Naturally occurring hepatitis B virus reverse transcriptase mutations related to potential antiviral drug resistance and liver disease progression. World J Gastroenterol 2018; 24:1708-1724. [PMID: 29713126 PMCID: PMC5922991 DOI: 10.3748/wjg.v24.i16.1708] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/10/2018] [Accepted: 04/15/2018] [Indexed: 02/06/2023] Open
Abstract
The annual number of deaths caused by hepatitis B virus (HBV)-related disease, including cirrhosis and hepatocellular carcinoma (HCC), is estimated as 887000. The reported prevalence of HBV reverse transcriptase (RT) mutation prior to treatment is varied and the impact of preexisting mutations on the treatment of naïve patients remains controversial, and primarily depends on geographic factors, HBV genotypes, HBeAg serostatus, HBV viral loads, disease progression, intergenotypic recombination and co-infection with HIV. Different sensitivity of detection methodology used could also affect their prevalence results. Several genotype-dependent HBV RT positions that can affect the emergence of drug resistance have also been reported. Eight mutations in RT (rtL80I, rtD134N, rtN139K/T/H, rtY141F, rtM204I/V, rtF221Y, rtI224V, and rtM309K) are significantly associated with HCC progression. HBeAg-negative status, low viral load, and genotype C infection are significantly related to a higher frequency and prevalence of preexisting RT mutations. Preexisting mutations are most frequently found in the A-B interdomain of RT which overlaps with the HBsAg “a” determinant region, mutations of which can lead to simultaneous viral immune escape. In conclusion, the presence of baseline RT mutations can affect drug treatment outcomes and disease progression in HBV-infected populations via modulation of viral fitness and host-immune responses.
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Affiliation(s)
- Yu-Min Choi
- Department of Microbiology and Immunology, Biomedical Sciences, Liver Research Institute and Cancer Research Institute, Seoul National University, College of Medicine, Seoul 110799, South Korea
| | - So-Young Lee
- Department of Microbiology and Immunology, Biomedical Sciences, Liver Research Institute and Cancer Research Institute, Seoul National University, College of Medicine, Seoul 110799, South Korea
| | - Bum-Joon Kim
- Department of Microbiology and Immunology, Biomedical Sciences, Liver Research Institute and Cancer Research Institute, Seoul National University, College of Medicine, Seoul 110799, South Korea
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8
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Mohebbi A, Lorestani N, Tahamtan A, Kargar NL, Tabarraei A. An Overview of Hepatitis B Virus Surface Antigen Secretion Inhibitors. Front Microbiol 2018; 9:662. [PMID: 29675010 PMCID: PMC5895781 DOI: 10.3389/fmicb.2018.00662] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 03/21/2018] [Indexed: 12/11/2022] Open
Abstract
Current anti-hepatitis B virus (HBV) regimen do not meet ideal result due to emerging resistance strains, cytotoxicity, and unfavorable adverse effects. In chronic HBV infection, high rates of sub-viral particles (SVPs) bearing HBV surface antigen (HBsAg) is a major obstacle regarding to raise effective immune responses and subsequently virus clearance. Development of potent HBsAg secretion inhibitors would provide a better insight into HBV immunopathogenesis and therapy. Investigating new non-toxic HBsAg secretion inhibitors targeting either viral or cellular factors could restore the immune response to remove virally infected hepatocytes after inhibiting SVPs. In this study, we overview several classes of HBV inhibitors with focus on their limitations and advantages over anti-HBsAg secretion potential.
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Affiliation(s)
- Alireza Mohebbi
- Student Research Committee, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran.,Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Nazanin Lorestani
- Student Research Committee, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Alireza Tahamtan
- Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Niki L Kargar
- Student Research Committee, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Alijan Tabarraei
- Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran.,Infectious Disease Research Center, Golestan University of Medical Sciences, Gorgan, Iran
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9
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Molecular Characterization of Drug Resistance in Hepatitis B Viruses Isolated from Patients with Chronical Infection in Turkey. HEPATITIS MONTHLY 2018. [DOI: 10.5812/hepatmon.12472] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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10
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Li X, Liu Y, Xin S, Ji D, You S, Hu J, Zhao J, Wu J, Liao H, Zhang XX, Xu D. Comparison of Detection Rate and Mutational Pattern of Drug-Resistant Mutations Between a Large Cohort of Genotype B and Genotype C Hepatitis B Virus-Infected Patients in North China. Microb Drug Resist 2016; 23:516-522. [PMID: 27792585 DOI: 10.1089/mdr.2016.0093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The study aimed to investigate the association of prevalent genotypes in China (HBV/C and HBV/B) with HBV drug-resistant mutations. A total of 13,847 nucleos(t)ide analogue (NA)-treated patients with chronic HBV infection from North China were enrolled. HBV genotypes and resistant mutations were determined by direct sequencing and confirmed by clonal sequencing if necessary. HBV/B, HBV/C, and HBV/D occupied 14.3%, 84.9%, and 0.8% across the study population, respectively. NA usage had no significant difference between HBV/B- and HBV/C-infected patients. Lamivudine-resistant mutations were more frequently detected in HBV/C-infected patients, compared with HBV/B-infected patients (31.67% vs. 25.26%, p < 0.01). Adefovir- and entecavir-resistant mutation detection rates were similar, but the mutational pattern was different between the two genotypes. For adefovir-resistant mutations, HBV/C-infected patients had a higher detection rate of rtA181 V (HBV/C 5.29% vs. HBV/B 1.36%, p < 0.01) and a lower detection rate of rtN236T (2.70% vs. 6.54%, p < 0.01). For entecavir-resistant mutations, HBV/C-infected patients had a higher detection rate of rtM204 V/I+T184 substitution or S202G/C (3.66% vs. 2.16%, p < 0.01) and a lower detection rate of rtM204 V/I+M250 V/I/L substitution (0.67% vs. 1.46%, p < 0.01). Multidrug-resistant mutations (defined as coexistence of mutation to nucleoside and nucleotide analogues) were detected in 104 patients. HBV/C-infected patients had a higher detection rate of multidrug-resistant mutation than HBV/B-infected patients (0.83% vs. 0.35%, p < 0.05). The study for the first time clarified that HBV/C-infected patients had a higher risk to develop multidrug-resistant mutations, compared with HBV/B-infected patients; and HBV/C- and HBV/B-infected patients had different inclinations in the ETV-resistant mutational pattern.
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Affiliation(s)
- Xiaodong Li
- 1 Research Center for Clinical and Translational Medicine , Beijing 302 Hospital, Beijing, China
| | - Yan Liu
- 1 Research Center for Clinical and Translational Medicine , Beijing 302 Hospital, Beijing, China
| | - Shaojie Xin
- 2 Medical Center for Liver Failure , Beijing 302 Hospital, Beijing, China
| | - Dong Ji
- 2 Medical Center for Liver Failure , Beijing 302 Hospital, Beijing, China
| | - Shaoli You
- 2 Medical Center for Liver Failure , Beijing 302 Hospital, Beijing, China
| | - Jinhua Hu
- 2 Medical Center for Liver Failure , Beijing 302 Hospital, Beijing, China
| | - Jun Zhao
- 2 Medical Center for Liver Failure , Beijing 302 Hospital, Beijing, China
| | - Jingjing Wu
- 1 Research Center for Clinical and Translational Medicine , Beijing 302 Hospital, Beijing, China
| | - Hao Liao
- 1 Research Center for Clinical and Translational Medicine , Beijing 302 Hospital, Beijing, China
| | - Xin-Xin Zhang
- 3 Department of Infectious Diseases, Rui Jin Hospital, Shanghai Jiao Tong University , Shanghai, China
| | - Dongping Xu
- 1 Research Center for Clinical and Translational Medicine , Beijing 302 Hospital, Beijing, China
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11
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Prevalence of mutations in HBV DNA polymerase gene associated with nucleos(t)ide resistance in treatment-naive patients with Chronic Hepatitis B in Central China. Braz J Infect Dis 2016; 20:173-8. [PMID: 26876337 PMCID: PMC9427582 DOI: 10.1016/j.bjid.2015.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 12/02/2015] [Accepted: 12/21/2015] [Indexed: 02/07/2023] Open
Abstract
Objective There are a lot of disagreements in the studies on hepatitis B virus (HBV) DNA polymerase mutation rate associated with nucleos(t)ide analogues (NAs) in treatment-naive chronic hepatitis B (CHB) patients. This is the first study aimed to investigate the prevalence of spontaneous HBV resistance mutations in Central China. Methods This study included treatment-naive patients with CHB from June 2012 to May 2015 receiving care at the Institute of Liver Disease in Central China. All patients completed a questionnaire covering different aspects, such as family medical history, course of liver disease, medication history, alcohol use, among others. Mutations in HBV DNA polymerase associated with NAs resistance were detected using INNO-LiPA assay. Results 269 patients were infected with HBV genotype B (81.4%), C (17.9%), and both B and C (0.7%). Mutations in HBV DNA polymerase were detected in 24 patients (8.9%) including rtM204I/V (n = 6), rtN236T (n = 5), rtM250V (n = 2), rtL180M (n = 2), rtT184G (n = 1), rtM207I (n = 1), rtS202I (n = 1), rtM204V/I & rtL180M (n = 5), and rtM204I & rtM250V (n = 1). Conclusion Spontaneous HBV resistance mutations in HBV DNA polymerase were found in treatment-naive patients with CHB in Central China. These findings suggest that we should analyze HBV DNA polymerase resistance mutation associated with NAs before giving antiviral therapy such as lamivudine (LAM), adefovir (ADV), and telbivudine (LdT).
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12
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Hamidi-Fard M, Makvandi M, Samarbaf-Zadeh A, Hajiani E, Shayesteh A, Masjedizadeh A. Mutation analysis of hepatitis B virus reverse transcriptase region among untreated chronically infected patients in Ahvaz city (South-West of Iran). Indian J Med Microbiol 2015; 31:360-5. [PMID: 24064642 DOI: 10.4103/0255-0857.118882] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND It has been revealed that mutations can occur spontaneously and naturally in HBV reverse transcriptase (RT) region among untreated patients. These HBV mutants pre-exist as minor viral population in naive patients and can emerge as major viral population, conferring drug resistance and treatment failure. OBJECTIVES The aim of this study was to investigate and identify prevalent mutations of RT region of hepatitis B virus genome in patients with chronic hepatitis B (CHB) untreated with antiviral drugs in South-West of Iran. MATERIALS AND METHODS A total of 45 cases with CHB who did not receive the treatment of lamivudine and any other antivirus drugs within the last one year were randomly chosen. After sample collection and HBV DNA extraction, RT region was amplified by polymerase chain reaction (PCR). Then PCR products were sequenced and HBV RT region mutations and amino acid changes were analyzed either manually or using web-based programs, on the basis of comparison of the obtained sequences with a set of HBV reference sequences. RESULTS A total of 23 (51.1%) mutations and amino acid changes were detected in studied 45 untreated patients. Of these, 3 (6.6%) patients had primary resistance mutation (rtM204I, rtA181T and rtA181S) and 20 (44.4%) patients had secondary resistance mutations. CONCLUSION High prevalence of mutations was found in HBV RT region of untreated patients. Most of these mutations were associated with resistance to adefovir and one patient had primary resistance mutation to lamivudine. Awareness of these resistance patterns might help in the antiviral therapy and for predicting clinical outcomes.
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Affiliation(s)
- M Hamidi-Fard
- Infectious and Tropical Diseases Research Center , Ahvaz Jundishapur University of medical sciences, Ahvaz, Iran
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Gomes-Gouvêa MS, Ferreira AC, Teixeira R, Andrade JR, Ferreira ASP, Barros LMF, Rezende REF, Santos Nastri ACS, Leite AGB, Piccoli LZ, Galvan J, Conde SRSS, Soares MCP, Kliemann DA, Bertolini DA, Kunyoshi ASO, Lyra AC, Oikawa MK, de Araújo LV, Carrilho FJ, Mendes-Corrêa MCJ, Rebello Pinho JR. HBV carrying drug-resistance mutations in chronically infected treatment-naive patients. Antivir Ther 2015; 20:387-95. [DOI: 10.3851/imp2938] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2014] [Indexed: 10/24/2022]
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Vutien P, Trinh HN, Garcia RT, Nguyen HA, Levitt BS, Nguyen K, da Silveira E, Daugherty T, Ahmed A, Garcia G, Lutchman GA, Nguyen MH. Mutations in HBV DNA polymerase associated with nucleos(t)ide resistance are rare in treatment-naive patients. Clin Gastroenterol Hepatol 2014; 12:1363-70. [PMID: 24342744 DOI: 10.1016/j.cgh.2013.11.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 11/18/2013] [Accepted: 11/24/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Prior studies have detected hepatitis B virus (HBV) DNA polymerase mutations in treatment-naive patients. However, most of these studies used either direct polymerase chain reaction sequencing, which detects these mutations with low levels of sensitivity, or patient cohorts that were not well-characterized. We investigated the prevalence of HBV mutations in DNA polymerase by using a line probe assay. METHODS In a prospective, cross-sectional study, we enrolled 198 treatment-naive patients with chronic hepatitis B (52.5% male; mean age, 41 years) from February 2009 to May 2011 from 3 gastroenterology and liver clinics in Northern California. Exclusion criteria included infection with hepatitis C or D viruses or human immunodeficiency virus. All patients completed a questionnaire (to determine demographics, history of liver disease, prior treatments, family medical history, drug and alcohol use, and environmental risk factors for hepatitis) that was administered by a research coordinator; mutations in HBV DNA polymerase were detected by using the INNO-LiPA HBV DR v.3 assay. RESULTS Most patients were Vietnamese (48.5%) or Chinese (36.4%) and were infected with HBV genotypes B (67.5%) or C (24.2%). Mutations in HBV DNA polymerase were found in 2 patients (1%), rtI233V (n = 1) and rtM250M/L (n = 1). CONCLUSIONS In a multicenter prospective study of treatment-naive patients with chronic hepatitis B, we detected mutations in HBV DNA polymerase in only 1%. Because of the low prevalence of these mutations and the uncertain clinical significance of such quasispecies, routine HBV DNA polymerase mutation analysis cannot be recommended before initiation of antiviral therapy for treatment-naive patients with chronic hepatitis B. The analysis requires further molecular and clinical studies.
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Affiliation(s)
- Philip Vutien
- Case Western Reserve University School of Medicine, Cleveland, Ohio; Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, California
| | - Huy N Trinh
- Pacific Health Foundation, San Jose, California; San Jose Gastroenterology, San Jose, California
| | - Ruel T Garcia
- Pacific Health Foundation, San Jose, California; San Jose Gastroenterology, San Jose, California
| | | | | | | | | | - Tami Daugherty
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, California
| | - Aijaz Ahmed
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, California
| | - Gabriel Garcia
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, California
| | - Glen A Lutchman
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, California
| | - Mindie H Nguyen
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, California.
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Ciftci S, Keskin F, Cakiris A, Akyuz F, Pinarbasi B, Abaci N, Dincer E, Badur S, Kaymakoglu S, Ustek D. Analysis of potential antiviral resistance mutation profiles within the HBV reverse transcriptase in untreated chronic hepatitis B patients using an ultra-deep pyrosequencing method. Diagn Microbiol Infect Dis 2014; 79:25-30. [PMID: 24630522 DOI: 10.1016/j.diagmicrobio.2014.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 01/04/2014] [Accepted: 01/06/2014] [Indexed: 02/06/2023]
Abstract
The potential antiviral resistance mutations within hepatitis B virus (HBV) reverse transcriptase (RT) region for nucleos(t)ide analogues (NA) are not well known. Especially, the effect of pre-existing antiviral drug resistance mutations in untreated patients in comparison to the resistance developed after treatment is not still clear. Sixteen naive chronic hepatitis B patients were studied. None of the patients had received NA treatment prior to the serum samples being collected. Forty-two potential NA resistance (NAr) mutation sites were screened by ultra-deep pyrosequencing (UDPS). After therapy, mutations conferring treatment resistance were detected by LiPA. Serum samples taken before treatment showed no classic primary or compensatory/secondary drug resistance mutations. However, NAr mutations found in 6 isolates (37.5%) involved 7 positions including rtL91I, rtT128I, rtQ215P, rtF221Y, rtN238D, rtC256S, and rtI266G. Substitutions at 3 NAr mutation sites (rtT128I, rtN238D, and rtC256S) were detected in 3 unresponsive patients developing drug resistance after NA treatment. One patient with rtI266G mutation also developed drug resistance after lamivudine (LAM) therapy. However, the relationship between rtI266G mutation and NA drug resistance was not previously reported. These results suggest that association of potential mutations besides the primary and secondary/compensatory resistance mutations should be investigated. Investigation of NAr mutations before treatment may be important for the success of the treatment.
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Affiliation(s)
- Sevgi Ciftci
- Department of Microbiology, Faculty of Dentistry, Istanbul University, 34390 Istanbul, Turkey.
| | - Fahriye Keskin
- Department of Microbiology, Faculty of Dentistry, Istanbul University, 34390 Istanbul, Turkey
| | - Aris Cakiris
- Institute for Experimental Medical Research, Istanbul University, 34393 Istanbul, Turkey
| | - Filiz Akyuz
- Department of Gastroenterohepatology, Faculty of Medicine, Istanbul University, 34093 Istanbul, Turkey
| | - Binnur Pinarbasi
- Department of Gastroenterohepatology, Faculty of Medicine, Istanbul University, 34093 Istanbul, Turkey
| | - Neslihan Abaci
- Institute for Experimental Medical Research, Istanbul University, 34393 Istanbul, Turkey
| | - Erdinc Dincer
- Institute for Experimental Medical Research, Istanbul University, 34393 Istanbul, Turkey
| | - Selim Badur
- Microbiology and Clinical Microbiology, Faculty of Medicine, Istanbul University, 34093 Istanbul, Turkey
| | - Sabahattin Kaymakoglu
- Department of Gastroenterohepatology, Faculty of Medicine, Istanbul University, 34093 Istanbul, Turkey
| | - Duran Ustek
- Institute for Experimental Medical Research, Istanbul University, 34393 Istanbul, Turkey
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Absence of Hepatitis B Resistance Mutants before Introduction of Oral Antiviral Therapy. ISRN HEPATOLOGY 2013; 2013:130384. [PMID: 27335823 PMCID: PMC4890864 DOI: 10.1155/2013/130384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Accepted: 08/13/2013] [Indexed: 02/07/2023]
Abstract
Introduction. The aim of this study was to assess whether hepatitis B virus drug resistant mutations antedated the widespread use of nucleos(t)ide analogues in treatment naïve patients. A number of reports have suggested that drug resistant mutants can be detected in apparently treatment naïve patients. Study. Fifty deidentified serum samples collected from 1986 to 1992 from patients with replicative chronic HBV infection at the University of Miami were genotyped and tested for resistance mutations using a line probe assay InnoLiPA HBV DR v2/v3. Serum HBV DNA was measured. All patients had documented chronic HBV infection with a detectable viral load, HBeAg seropositivity, and absence of HIV infection. Results. Of the 50 individuals included, 86% were male, mean age was 40 ± 12 years, and mostly genotype A. The mean HBV DNA was 126 pg/mL (range 6.4 to 557.0). No mutations were identified. Conclusions. The absence of drug induced mutations in these sera collected several years prior to the introduction of oral antiviral therapy suggests that these mutations do not occur in treatment naïve populations. Detection of drug resistance in an apparently treatment naïve subject suggests either unrecognized prior antiviral therapy or infection by an inoculum from a treatment experienced patient.
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Alvarez Estévez M, Chueca-Porcuna N, Guillot-Suay V, Peña-Monje A, García-García F, García-García F. [Low prevalence of hepatitis B virus primary drug resistance in Southern Spain]. Enferm Infecc Microbiol Clin 2013; 31:520-2. [PMID: 23602529 DOI: 10.1016/j.eimc.2013.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 02/22/2013] [Accepted: 02/25/2013] [Indexed: 10/26/2022]
Abstract
INTRODUCTION To know the prevalence of primary resistance in chronic hepatitis B naïve patients is essential to decide on the need of routine laboratory testing. PATIENTS AND METHODS The genetic sequence of the HBV polymerase from 105naïve patients was analysed. RESULTS rtV173L, a lamivudine compensatory mutation, was detected in two patients (1.9%), rtI233V in one patient, and another one carried the sG145R vaccine escape mutation. CONCLUSION Our study shows that studying HBV resistance in naïve patients should not be recommended in the routine laboratory setting, for the time being.
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Snapshot on drug-resistance rate and profiles in patients with chronic hepatitis B receiving nucleos(t)ide analogues in clinical practice. J Med Virol 2013; 85:996-1004. [DOI: 10.1002/jmv.23567] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2013] [Indexed: 12/29/2022]
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Panigrahi R, Biswas A, De BK, Chakrabarti S, Chakravarty R. Characterization of antiviral resistance mutations among the Eastern Indian Hepatitis B virus infected population. Virol J 2013; 10:56. [PMID: 23409946 PMCID: PMC3621210 DOI: 10.1186/1743-422x-10-56] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 01/14/2013] [Indexed: 12/15/2022] Open
Abstract
Background Antiviral therapy using nucleos(t)ide analogues (NAs) is an effective control measure of chronic hepatitis B virus (HBV) infection; however they need long term treatment. Presence of drug-resistance mutations may get in the way of the efficacy of antiviral therapy. Our study was aimed at defining the prevalence of HBV drug-resistance in HBVrt region in a population of 147 HBsAg positive patients. Findings HBV/D has shown multiple types of HBVrt mutations both among treatment naïve (65.0%, 13 of 20 HBV/D) and treated patients (56.2%, 9 of 16 HBV/D). In additional, several mutations, with a suggested role in drug resistance, were detected among the treatment naïve as well as the treated patients. The mutations reported to be involved in reduction of drug effectiveness, was common among non-responders to therapy as well as among the naïve patients. Notably, classical antiviral resistance mutations (rtL80I/V-rtI169T-rtV173L-rtL180M-rtA181T/V/S-rtT184A/S/G/C-rtA194T-rtS202C /G/I -rtM204V/I-rtN236T-rtM250V) were not detected. Conclusion The prevalence of putative NAr mutations among non responders to therapy suggests that they might have role in reduced efficacy of currently available antivirals and requires further investigations.
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Affiliation(s)
- Rajesh Panigrahi
- ICMR Virus Unit, Kolkata, ID & BG Hospital Campus, Kolkata, India
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