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Challenges and opportunities for hepatitis C drug development in HIV-hepatitis C virus-co-infected patients
Insights
Direct-acting antivirals (DAAs) offer hope for curing chronic hepatitis C in HIV patients. However, off-label use may lead to resistance and toxicity, particularly in resource-poor nations.
Area of Science:
- Hepatology
- Virology
- Infectious Diseases
Background:
- Direct-acting antivirals (DAAs) represent a significant advancement in treating chronic hepatitis C (HCV) infection.
- Co-infection with human immunodeficiency virus (HIV) accelerates liver disease progression, making HCV treatment crucial.
Discussion:
- Judicious use of DAAs can cure many HIV-HCV co-infected patients.
- Off-label or suboptimal DAA use can result in toxicities, drug interactions, and the selection of drug-resistant HCV variants.
- First-generation DAAs may disproportionately affect non-genotype 1 or drug-resistant HCV infections.
Key Insights:
- HIV-HCV co-infection necessitates effective and safe treatment strategies.
- The emergence of drug resistance and toxicity are critical concerns with widespread DAA use.
- Resource-limited settings face challenges in accessing HCV therapy, potentially concentrating difficult-to-treat cases.
Outlook:
- Future DAA development should consider resistance profiles and co-infection complexities.
- Ensuring equitable access to effective HCV treatment in resource-poor nations is paramount.
- Continued research is needed to optimize DAA regimens for diverse patient populations and HCV genotypes.
Abstract:
The approval of the first direct-acting antivirals (DAAs) against the hepatitis C virus (HCV) has been eagerly expected for treating chronic hepatitis C in HIV individuals given that progression to cirrhosis and end-stage liver disease occurs faster in the co-infected population. The appropriate and judicious use of DAAs may provide cure to a large number of HIV-HCV patients. On the contrary, the widespread use of DAAs will occasionally be off-label or under unsatisfactory medical conditions, which may result in undesirable toxicities, drug interactions or selection of drug resistance in HCV. As a result of using first-generation DAAs in HIV-HCV-co-infected patients, a growing proportion of the remaining hepatitis C individuals will be those harboring non-HCV 1 genotypes or drug-resistant HCV variants. Over time, the largest reservoir of HCV genotype 1 patients will accumulate in resource-poor nations where access to hepatitis C therapy has been elusive and HIV treatment remains the primary health issue for the co-infected population.
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