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Antiviral therapy for "difficult-to-treat" hepatitis C virus-infected patients
Tatsuo Kanda1, Osamu Yokosuka, Masao Omata
1Department of Gastroenterology and Nephrology, Chiba University, Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, Japan.
Insights
New direct antiviral agents (DAAs) offer improved hepatitis C virus (HCV) treatment, but some patients remain difficult to treat. Research reviews DAAs and identifies patient groups needing further therapeutic strategies.
Area of Science:
- Hepatology
- Virology
- Pharmacology
Background:
- Direct antiviral agents (DAAs) represent a significant advancement in treating hepatitis C virus (HCV) infection.
- Previous treatments often had lower sustained virological response (SVR) rates and significant side effects.
Purpose of the Study:
- To review current research on DAAs for HCV treatment.
- To specifically address treatment challenges in "difficult-to-treat" HCV populations.
Main Methods:
- Literature search of PubMed and Google Scholar databases up to July 2013.
- Review of published clinical trials and real-world data on DAAs for HCV.
Main Results:
- DAAs, including telaprevir and boceprevir, achieve higher SVR rates.
- Certain patient groups, such as those with advanced fibrosis, cirrhosis, co-infections (HIV), elderly, and children, remain challenging to treat effectively.
- Despite advancements, a subset of patients will still require tailored therapeutic approaches.
Conclusions:
- Even with potent DAAs, some HCV patients remain difficult to treat.
- Interferon-sparing regimens may offer enhanced efficacy for these challenging cases, though further clinical trial evidence is needed.
Objective:
To review the updated research on direct antiviral agents (DAAs)-including regimens for hepatitis C virus (HCV), and focus on "difficult-to-treat" HCV-infected patients.
Data Sources:
The literature concerning DAAs and hepatitis C cited in this review was collected from PubMed and Google Scholar databases published in English up to July 2013.
Study Selection:
Data from published articles regarding HCV and DAAs in clinical trials and in clinical use were identified and reviewed.
Results:
It was recognized that some "difficult-to-treat" patients would still exist, even though stronger treatments using such as DAAs, including telaprevir and boceprevir, which lead to higher sustained virological response rates, are available. Such patients include those with advanced fibrosis/cirrhosis, elderly persons, children, HCV-human immunodeficiency virus co-infected patients, HCV-infected recipients, and so on.
Conclusions:
Certain "difficult-to-treat" patients would still exist, even though stronger treatment is available. Although evidence from clinical trials is still lacking, interferon-sparing regimens could have stronger effects for eradicating HCV in such cases.
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