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Titre : Efficacy of direct-acting antiviral treatment for chronic hepatitis C: A single hospital experience
link : Efficacy of direct-acting antiviral treatment for chronic hepatitis C: A single hospital experience

Efficacy of direct-acting antiviral treatment for chronic hepatitis C: A single hospital experience

World J Hepatol. Jan 27, 2018; 10(1): 88-94
Published online Jan 27, 2018. doi: 10.4254/wjh.v10.i1.88

Efficacy of direct-acting antiviral treatment for chronic hepatitis C: A single hospital experience
Rena Kaneko, Natsuko Nakazaki, Risa Omori, Yuichiro Yano, Masazumi Ogawa, Yuzuru Sato

Abstract

AIM
To evaluate the efficacy of direct-acting antivirals (DAAs) in Kanto Rosai Hospital.

METHODS
All patients with hepatitis C virus (HCV) who underwent DAA prescription were enrolled in this study. The present study was a single center retrospective analysis using patients infected with HCV genotype 1 or 2. Resistance analysis was performed by using direct sequencing and cycleave PCR in genotype 1 patients treated with interferon (IFN)-free DAA. The primary endpoint was sustained virologic response at 12 wk after therapy (SVR12).

RESULTS
A total of 117 patients participated in the study, including 135 with genotype 1 and 42 with genotype 2. Of the 135 patients with genotype 1, 16 received protease inhibitor + IFN + ribavirin and all achieved SVR. Of the 119 patients who received IFN-free DAA (in different combinations), 102 achieved SVR and 9 failed (7/9 were on daclatasvir/asunaprevir and 2/9 on ledipasvir/sofosbuvir). Efficacy analysis was done only for 43 patients who received daclatasvir/asunaprevir. From this analysis, Y93 resistance-associated substitutions were significantly correlated with SVR.

CONCLUSION
The SVR rate was 98% for genotype 1 and 100% for genotype 2. However, caution is needed for HCV NS5A resistance-associated substitutions that are selected by HCV NS5A inhibitors because cerebrovascular adverse events are induced by some DAA drugs.

Key Words: Resistance-associated substitutions, Direct-acting antivirals, Sustained viral response, Hepatitis C

Core tip: Direct-acting antivirals have been approved for the treatment of hepatitis C virus (HCV) genotype 1 and 2 infections in Japan since 2011. In the new era of DAA therapy, predictors who fail to respond to DAA might be compromised by resistance-associated substitutions. There have been few reports of daclatasvir/asunaprevir failure because daclatasvir/asunaprevir is limited in Japan. Therefore, it might be important to report these cases for future research and treatment of HCV.

View full text article online: https://www.wjgnet.com/1948-5182/full/v10/i1/88.htm

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