Assessment of the Efficacy of Reducing Peginterferon Alfa-2a and Ribavirin Dose on Virologic Response in Koreans with Chronic Hepatitis C
The Korean Journal of Internal Medicine
;
: 203-211, 2009.
Artigo
em Inglês
| WPRIM
| ID: wpr-150690
ABSTRACT
BACKGROUND/AIMS:
The virologic response of Koreans to combination therapy for chronic hepatitis C is similar to westerns; however, dose modification occurs more frequently in Koreans. We evaluated the rates of peginterferon alpha-2a and ribavirin dose modifications and their effect on the virologic response in Koreans.METHODS:
Patients with detectable HCV RNA and enrolled from multicenters were treated with peginterferon alpha-2a (180 microgram/week) and ribavirin (800 mg/day) for 24 weeks (genotype non-1, n=37) or peginterferon alpha-2a (180 microgram/week) and ribavirin (1,000-1,200 mg/day) for 48 weeks (genotype 1, n=55).RESULTS:
Early virologic response (EVR) and sustained virologic response (SVR) were 77.2% (genotype 1, 75%; non-1, 81%) and 66.3% (genotype 1, 56%; non-1, 81%), respectively. The frequency of dose modification was 32.6% within the first 12 weeks and 52.2% during the entire treatment period. No difference was found in SVR regardless of dose modification. However, the SVR for patients using > or =80% of the peginterferon dose was significantly higher than for those using <80% (81.3 vs. 50.0%, p=0.007), despite varying ribavirin doses. No difference was found in SVR regardless of whether the ribavirin dose was <80% or not. These results did not change based on genotype.CONCLUSIONS:
We suggest that using at least 80% of the peginterferon alpha-2a dose in Koreans not only maintains SVR but also reduces drug side effects during the entire treatment period. A lower dose of ribavirin may be as efficacious as a standard dose.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Antivirais
/
Polietilenoglicóis
/
Ribavirina
/
RNA Viral
/
Hepatite C Crônica
/
Quimioterapia Combinada
/
Interferon alfa-2
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
The Korean Journal of Internal Medicine
Ano de publicação:
2009
Tipo de documento:
Artigo
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