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Interferon-alpha treatment of chronic hepatitis C in children with hemophilia
1Department of Pediatrics, Seoul National University College of Medicine, Korea.
Insights
Interferon-alpha therapy is safe and effective for treating chronic hepatitis C in children with hemophilia. Lower pretreatment hepatitis C virus RNA levels and specific genotypes predict a sustained treatment response.
Area of Science:
- Hepatology
- Pediatric Gastroenterology
- Virology
Background:
- Hepatitis C virus (HCV) is a primary cause of chronic liver disease in children with hemophilia.
- This study investigated the long-term effectiveness of interferon-alpha therapy for chronic hepatitis C in this pediatric population.
Purpose of the Study:
- To evaluate the long-term efficacy of interferon-alpha in children with hemophilia and chronic hepatitis C.
- To identify factors predicting a sustained virologic response to interferon therapy.
Main Methods:
- Seventeen Korean children with hemophilia and chronic hepatitis C received interferon-alpha2a (3.7 million units/m2) three times weekly for 6 months.
- HCV RNA levels were quantified, and HCV genotyping was performed pretreatment.
- Liver biopsies were conducted.
Main Results:
- HCV genotypes 1a, 1b, and 2a were identified in 18%, 29%, and 35% of patients, respectively.
- Interferon-alpha was well-tolerated, with no increase in bleeding frequency.
- A sustained response was observed in 41% of patients at 3 years post-therapy.
- Lower pretreatment HCV RNA levels and genotype 2 were associated with sustained response (P < 0.05).
Conclusions:
- Interferon-alpha treatment is safe and effective for chronic hepatitis C in children with hemophilia, yielding sustained responses.
- Pretreatment HCV RNA levels and viral genotype are potential predictors of sustained response to interferon therapy.
Background:
In children with hemophilia, hepatitis C virus (HCV) is the major cause of chronic liver disease. In this study, long-term efficacy of interferon-alpha was studied to determine the factors that predict a sustained response to interferon therapy in young children with hemophilia who have chronic hepatitis C.
Methods:
Seventeen Korean children with hemophilia and chronic hepatitis C were treated with 3.7 million units/m2 of interferon-alpha2a three times weekly for 6 months. Liver biopsy, pretreatment serum HCV RNA quantitation with competitive reverse transcription assay, and HCV genotyping with reverse hybridization assay were performed.
Results:
Hepatitis C virus genotypes 1a, 1b, and 2a were found in three (18%), five (29%), and six (35%) patients, respectively. Interferon-alpha was well tolerated, and the frequency of bleeding did not increase. Of the 17 patients, 7 (41%) had a sustained response for 3 years after the end of therapy. Patients with a sustained response had lower pretreatment serum HCV RNA levels. One (13%) of eight patients with genotype 1 and five (83%) of six with genotype 2 had a sustained response (P < 0.05).
Conclusions:
Interferon-alpha treatment of chronic hepatitis C in children with hemophilia was safe and effective in producing sustained responses. The pretreatment serum HCV RNA level and viral genotype may be predictive factors for sustained response to interferon therapy.
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