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Published on: October 29, 2015
Hepatitis C Virus in Children: Deferring Treatment in Expectation of Direct-Acting Antiviral Agents
Insights
Vertical transmission is the main route for pediatric hepatitis C virus (HCV) infection. While most children clear the virus spontaneously, treatment is reserved for high-risk cases due to potential side effects.
Area of Science:
- Pediatric Infectious Diseases
- Hepatology
- Virology
Background:
- Hepatitis C virus (HCV) infection in children primarily occurs vertically from mother to infant.
- Pediatric HCV infection often results in spontaneous clearance, mild disease, and slow progression to cirrhosis (1-2%) over decades.
Purpose of the Study:
- To review the natural course, treatment outcomes, and emerging therapies for pediatric hepatitis C virus (HCV) infection.
- To inform clinical management strategies for children with HCV.
Main Methods:
- Review of existing literature on pediatric HCV infection, including transmission, natural history, and treatment efficacy.
- Analysis of outcomes associated with pegylated interferon (Peg-IFN) + ribavirin therapy.
- Consideration of ongoing research into direct-acting antiviral agents (DAAs).
Main Results:
- High spontaneous clearance rates in children with HCV.
- Peg-IFN + ribavirin achieves 100% sustained viral response (SVR) for genotypes 2/3, but only 45-55% for genotypes 1/4.
- Treatment is linked to various adverse effects, including anemia and neuropsychiatric symptoms.
Conclusions:
- An expectant approach is generally recommended for pediatric HCV.
- Treatment decisions should consider individual risk factors for progressive liver disease.
- Direct-acting antiviral agents (DAAs) show promise for future pediatric HCV treatment with improved safety and efficacy.
Abstract:
The major route of hepatitis C virus (HCV) infection in the pediatric age group is vertical, with infection occurring in up to 5% of infants born to mothers positive for HCV-RNA. The natural course of pediatric HCV infection is characterized by a high rate of spontaneous clearance, an asymptomatic clinical course, and normal or mild histologic changes. Cirrhosis is reported in 1-2% of children, and progression to severe chronic liver disease and HCC occurs 20-30 years after infection. Treatment with pegylated interferon (Peg-IFN) + ribavirin results in a sustained viral response (SVR) reaching 100% in children with HCV genotypes 2 or 3 but only 45-55% in those infected with genotypes 1 or 4. Treatment is associated with adverse effects ranging from flu-like symptoms, myalgia, anemia and thrombocytopenia, to less commonly observed thyroid-related symptoms, alopecia, neuropsychiatric manifestations and possible long-term effects on growth. Ongoing trials with direct-acting antiviral agents in adults show promising results with treatment regimens of shorter duration and high tolerance. The next few years will likely see these advances introduced to the pediatric population as well. In the meantime, in children with HCV an expectant approach is advocated and treatment should be offered only to those at high risk for more severe, progressive disease.
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