2011年5月
Ribavirin concentration in the later stages of 48 week pegylated interferon-alpha 2b plus ribavirin therapy for chronic hepatitis C is useful for predicting virological response
JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY
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- 巻
- 66
- 号
- 5
- 開始ページ
- 1127
- 終了ページ
- 1139
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/jac/dkr034
- 出版者・発行元
- OXFORD UNIV PRESS
Objectives: The current standard of care for chronic hepatitis C patients is a pegylated interferon-alpha plus ribavirin combination treatment. This study was carried out to determine the relationship between ribavirin concentration in the later stages of treatment and virological relapse.
Patients and methods: Serum ribavirin concentration of 183 chronic hepatitis C patients (genotype 1) treated with pegylated interferon-alpha 2b plus ribavirin for 48 weeks was prospectively measured by HPLC at weeks 4, 12, 24, 36 and 48. Patients with undetectable serum hepatitis C virus (HCV) RNA 24 weeks after the end of treatment were designated as having sustained virological response (SVR). Patients with undetectable HCV RNA during the treatment but with virological relapse after the end of treatment were designated relapse.
Results: The mean ribavirin concentration at each testing point of patients with SVR (1401, 1725, 1803, 1811 and 1901 ng/mL) was significantly higher than that of relapse patients (998, 704, 607, 643 and 654 ng/mL) at weeks 4, 12, 24, 36 and 48, respectively (all P < 0.001). Multivariate regression analysis for relapse extracted ribavirin concentration at week 36, but not cumulative ribavirin dosage. The cut-off value by receiver operating curve analysis for predicting a relapse was 1503 and 1562 ng/mL at weeks 36 and 48, respectively.
Conclusions: Ribavirin concentration in the later stages of treatment is an important marker of viral relapse.
Patients and methods: Serum ribavirin concentration of 183 chronic hepatitis C patients (genotype 1) treated with pegylated interferon-alpha 2b plus ribavirin for 48 weeks was prospectively measured by HPLC at weeks 4, 12, 24, 36 and 48. Patients with undetectable serum hepatitis C virus (HCV) RNA 24 weeks after the end of treatment were designated as having sustained virological response (SVR). Patients with undetectable HCV RNA during the treatment but with virological relapse after the end of treatment were designated relapse.
Results: The mean ribavirin concentration at each testing point of patients with SVR (1401, 1725, 1803, 1811 and 1901 ng/mL) was significantly higher than that of relapse patients (998, 704, 607, 643 and 654 ng/mL) at weeks 4, 12, 24, 36 and 48, respectively (all P < 0.001). Multivariate regression analysis for relapse extracted ribavirin concentration at week 36, but not cumulative ribavirin dosage. The cut-off value by receiver operating curve analysis for predicting a relapse was 1503 and 1562 ng/mL at weeks 36 and 48, respectively.
Conclusions: Ribavirin concentration in the later stages of treatment is an important marker of viral relapse.
- リンク情報
- ID情報
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- DOI : 10.1093/jac/dkr034
- ISSN : 0305-7453
- PubMed ID : 21393126
- Web of Science ID : WOS:000289584000027