Entecavir Resistance at rtS202, rtM250 May Cause Poor Viral Response to Tenofovir-based Rescue Therapy in Chronic Hepatitis B / 대한내과학회지
Korean Journal of Medicine
;
: 527-536, 2015.
Artigo
em Inglês
| WPRIM
| ID: wpr-116382
ABSTRACT
BACKGROUND/AIMS:
Long-term use of nucleos(t)ide analogues (NA) may lead to genotypic and/or phenotypic resistance of the hepatitis B virus (HBV). We investigated the efficacy of tenofovir-based rescue therapy in chronic hepatitis B (CHB) patients with newly developed genotypic resistance to prior NAs or partial virologic response to sequential rescue therapies.METHODS:
Fifty-four CHB patients were included retrospectively. The patients were treated with tenofovir alone or combined with lamivudine or entecavir.RESULTS:
There were 26 forms of genotypic resistance at enrollment. The median amount of serum HBV-DNA was 18,438 IU/mL and 83% of samples were positive for hepatitis B e antigen (HBeAg). Serum HBV-DNA was undetectable in 50%, 61%, and 76% of the patients at 3, 6, and 12 months, respectively. In multivariate analysis, HBV-DNA < 20,000 IU/mL and negative HBeAg at baseline were independent predictors of negativity for serum HBV-DNA. Interestingly, the rtS202 mutation tended to be associated with an unfavorable response. Other clinical variables and viral resistance genotypes showed non-significant viral response.CONCLUSIONS:
Lower serum HBV-DNA, negative HBeAg and lack of rtS202G mutations at baseline may predict a favorable response to tenofovir-based rescue therapies in CHB patients with newly developed genotypic resistance to prior NAs or a partial virologic response to sequential rescue therapies.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Resistência a Medicamentos
/
Vírus da Hepatite B
/
Análise Multivariada
/
Estudos Retrospectivos
/
Lamivudina
/
Hepatite B Crônica
/
Tenofovir
/
Genótipo
/
Hepatite B
/
Antígenos E da Hepatite B
Tipo de estudo:
Estudo observacional
Limite:
Humanos
Idioma:
Inglês
Revista:
Korean Journal of Medicine
Ano de publicação:
2015
Tipo de documento:
Artigo
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