Characterization of primary direct-acting antiviral (DAA) drugs resistance mutations in NS5A/NS5B regions of hepatitis C virus with genotype 1a and 1b from patients with chronic hepatitis
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Citações na Scopus
1
Tipo de produção
article
Data de publicação
2022
Título da Revista
ISSN da Revista
Título do Volume
Editora
INST MEDICINA TROPICAL SAO PAULO
Autores
SILVA, Vanessa Cristina Martins
LEMOS, Marcilio Figueiredo
SANTANA, Rubia Anita Ferraz
DASTOLI, Gregorio Tadeu Fernando
CASTRO, Vanessa Fusco Duarte de
MOREIRA, Regina Celia
Citação
REVISTA DO INSTITUTO DE MEDICINA TROPICAL DE SAO PAULO, v.64, article ID e61, 9p, 2022
Resumo
The Hepatitis C virus (HCV) infection is a public health problem. The high level of HCV replication and its lack of post-transcriptional correction mechanisms results in the emergence of viral variants and the difficulty in determining polymorphisms and variants that contain the substitutions associated with resistance towards new antivirals. The main focus of this study was to map the NS5A and NS5B polymorphisms and resistance mutations to new antiviral drugs in HCV strains genotype 1 from patients with chronic hepatitis C infection. Serum samples were collected from patients who underwent routine viral load tests at the Instituto Adolfo Lutz, Sao Paulo city, Brazil. A total of 698 and 853 samples were used for the characterization of NS5A and NS5B regions, respectively, which comprise the HCV genotypes la and lb. The prevalence of resistance mutations found in the NS5A region was 6.4%, with Y93H, L31M, Q30R, and Y93N as the main resistance-associated substitutions (RAS). No NS5B-associated RAS was observed for any of the analyzed drugs. These findings support that the RAS test should be offered to individuals with poor response to double combination regimens prior to treatment initiation, thereby assisting strain vigilance and selection of effective treatment or retreatment options using DAA regimens.
Palavras-chave
DAA, Hepatitis C virus, Genotype 1, RAS, NS5B, NS5A
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MIP
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - IMT
Artigos e Materiais de Revistas Científicas - LIM/07
Artigos e Materiais de Revistas Científicas - LIM/52
Artigos e Materiais de Revistas Científicas - ODS/03
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - IMT
Artigos e Materiais de Revistas Científicas - LIM/07
Artigos e Materiais de Revistas Científicas - LIM/52
Artigos e Materiais de Revistas Científicas - ODS/03