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Published on: July 16, 2012
Hepatitis C virus in human immunodeficiency virus-infected individuals: an emerging comorbidity with significant
Stevan A Gonzalez1, Andrew H Talal
1Center for the Study of Hepatitis C and Department of Medicine, Weill Medical College of Cornell University, New York, New York10021, USA.
Insights
Hepatitis C virus (HCV) infection significantly impacts human immunodeficiency virus (HIV)-infected individuals, accelerating liver disease. Treatment for coinfected patients is complex, requiring further research into new therapies.
Area of Science:
- Hepatology
- Infectious Diseases
- Immunology
Background:
- Antiretroviral therapy (ART) effectiveness has increased survival for HIV-infected individuals.
- Hepatitis C virus (HCV) infection is a major cause of illness and death in those with HIV.
- HIV significantly alters HCV presentation, epidemiology, virology, and pathogenesis.
Purpose of the Study:
- To review the impact of HIV on HCV infection.
- To discuss challenges in treating HCV in coinfected individuals.
- To explore future treatment strategies for HCV/HIV coinfection.
Main Methods:
- Literature review of studies on HCV/HIV coinfection.
- Analysis of clinical presentation, virology, and pathogenesis.
- Evaluation of current and emerging HCV treatment regimens.
Main Results:
- HIV accelerates HCV fibrosis progression, increases viral RNA levels, and hastens cirrhosis and end-stage liver disease (ESLD).
- Standard HCV treatments (pegylated interferon alpha [PEG-IFN] and ribavirin [RBV]) show reduced efficacy and increased complications in coinfected individuals.
- Newer, direct-acting antiviral regimens show promise but require further study in coinfected populations.
Conclusions:
- HCV diagnosis and treatment are recommended for coinfected individuals.
- Current HCV treatment in coinfection is challenging due to lower efficacy and higher complication rates.
- Further research is crucial to optimize HCV treatment strategies for coinfected individuals, potentially involving novel agents and combinations.
Abstract:
As antiretroviral (ARV) therapy has become more effective, hepatitis C virus (HCV) infection has emerged as an important cause of morbidity and mortality in human immunodeficiency virus (HIV)-infected individuals. HIV alters HCV clinical presentation, epidemiology, virology, and pathogenesis compared with HCV monoinfected individuals. The incidence of chronic and vertical HCV infection is increased, the rate of hepatic fibrosis progression is accelerated, peripheral and intrahepatic HCV RNA levels are increased, and end-stage liver disease (ESLD) and cirrhosis develop more rapidly in coinfected individuals. Based on these observations, combined with the increased efficacy of ARV therapy, several societies have recommended the diagnosis and treatment of HCV in coinfected individuals. HCV treatment with nonspecific antivirals, pegylated interferon alpha (PEG-IFN) and ribavirin (RBV), is more complex in coinfected individuals compared with monoinfected individuals because these regimens appear to have decreased efficacy and the incidence of complications is increased. Although new HCV-specific regimens show early promise in HCV monoinfected individuals, it is likely that these agents will be used in combination with nonspecific therapies and additional studies will be required to evaluate their efficacy in coinfected individuals.
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