Analysis of the complete genome of HBV genotypes F and H found in Brazil and Mexico using the next generation sequencing method
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Tipo de produção
article
Data de publicação
2022
Título da Revista
ISSN da Revista
Título do Volume
Editora
ELSEVIER ESPANA
Autores
SEBE, Pedro
FRANCISCO, Rodrigo Dos Santos
JOSE-ABREGO, Alexis
ROMAN, Sonia
PANDURO, Arturo
Citação
ANNALS OF HEPATOLOGY, v.27, suppl.1, Special Issue, article ID 100569, 8p, 2022
Resumo
Introduction and Objectives: Hepatitis B Virus is classified into ten different genotypes (A-J). Genotypes F and H cluster apart from others in phylogenetic trees and is particularly frequent in the Americas. The aim of this study was to sequence complete genomes of samples of HBV genotypes F and H from Brazil and Mexico using next generation sequencing (NGS) and to study relevant characteristics for the disease associated with this virus. Materials and methods: Ninety plasma samples with detectable HBV DNA belonging to the F (n=59) and H (n=31) genotypes were submitted to amplification of the complete HBV genome by three different methologies. Data analysis was developed using bioinformatics tools for quality assurance and comprehensive coverage of the genome. Sequences were aligned with reference sequences for subgenotyping and detecting variants in relevant positions. A phylogenetical tree was constructed using Bayesian methods. Results: HBV genome of 31 samples were amplified and 18 of them were sequenced (HBV/F=16 and HBV/H=2). One genotype F sample was co-infected with the F1b and F3 subgenotypes, while the other samples were all F2a subgenotype. Two genotype H samples clustered with other Mexican sequences. The main variants observed were found in preS and S genes (7/18) and mutations in the precore/core region (11/18). Conclusions: A NGS methodology was applied to F and H genotypes samples from Mexico and Brazil to fully characterize their sequences. This methodology will be relevant for clinical and epidemiological studies of hepatitis B in Latin America (C) 2021 Fundacion Clinica Medica Sur, A.C.
Palavras-chave
Hepatitis B, Sequencing, Next-generation, Latin America, Genotype
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