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Published on: September 25, 2019
Management and treatment of chronic hepatitis C in HIV patients
Pablo Barreiro1, Eugenia Vispo, Pablo Labarga
1Department of Infectious Diseases, Hospital Carlos III, Madrid, Spain.
Insights
Direct-acting antivirals (DAA) offer new hope for chronic hepatitis C (HCV) in HIV patients, but drug interactions and cost pose challenges. Personalized treatment using noninvasive tools and pharmacogenomics can improve outcomes.
Area of Science:
- Hepatology
- Infectious Diseases
- Virology
Background:
- Chronic hepatitis C (HCV) progresses faster to cirrhosis in human immunodeficiency virus (HIV)-coinfected patients.
- HCV/HIV coinfection shows lower response rates to peginterferon/ribavirin therapy compared to HCV monoinfection.
- Antiretroviral therapy may improve outcomes, but standard treatments remain suboptimal.
Purpose of the Study:
- To review the challenges and potential strategies for treating chronic hepatitis C in HIV-coinfected patients using direct-acting antivirals (DAA).
Main Methods:
- Review of current literature on HCV/HIV coinfection treatment.
- Discussion of DAA therapy challenges, including drug interactions, adherence, resistance, and cost.
- Exploration of personalized treatment approaches.
Main Results:
- DAA therapy is eagerly awaited but presents challenges like drug interactions with antiretrovirals and potential for resistance.
- High costs and adherence issues due to polymedication are significant concerns.
- Noninvasive fibrosis assessment (elastometry) and pharmacogenomics (IL28B, ITPA) can guide individualized DAA treatment.
Conclusions:
- Personalized treatment strategies incorporating noninvasive tools and pharmacogenomics are crucial for optimizing DAA therapy in HIV/HCV coinfected patients.
- Addressing drug interactions, adherence, and cost is essential for successful DAA implementation.
- Individualized approaches can improve cost-effectiveness and therapeutic outcomes.
Abstract:
Progression to cirrhosis occurs faster whereas response to peginterferon/ribavirin therapy is lower in patients with chronic hepatitis C coinfected with human immunodeficiency virus (HIV), as compared with hepatitis C virus (HCV) monoinfected individuals. The use of antiretroviral therapy may ameliorate poor outcomes in HIV/HCV coinfected patients. However, in the best scenario peginterferon/ribavirin therapy provides cure to 30% of patients harboring HCV genotypes 1 or 4 and to 70% of HCV genotypes 2 or 3 carriers, a rate lower than that seen in HCV monoinfection. Moreover, a substantial proportion of HIV/HCV coinfected patients are not treated due to contraindications, or do not complete therapy due to serious adverse events, or just do not wish to receive such a poorly tolerated medication. For these reasons, the advent of direct acting antivirals (DAA) has been eagerly awaited for treating HIV/HCV coinfected patients. However, new challenges have arisen, including the potential for harmful drug interactions with antiretroviral agents, poor drug adherence due to polymedication, increased risk for selection of drug-resistant HCV mutants, and unaffordable coverage in an environment of economic constraints. The use of noninvasive tools to measure liver fibrosis (i.e., elastometry) and pharmacogenomics (testing for IL28B and perhaps ITPA polymorphisms), along with consideration of early viral kinetics to guide length and drugs needed could help to individualize and improve the cost effectiveness of therapeutic decisions using DAA in HIV-infected patients with chronic hepatitis C.
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