Symptoms and Response to Interferon plus Ribavirin in Children with Chronic Hepatitis C
Compared with adults, chronic hepatitis C virus (HCV) infection in
children has not been extensively studied and remains poorly understood. Two
studies presented at the Digestive Disease Week (DDW) 2008 conference last
week in San Diego looked at natural history and response to treatment of
hepatitis C in pediatric patients.
• Almost 60% of patients presented with clinical symptoms including fatigue (n=15), joint or abdominal pain (n=13), bruising or bleeding (n=6), and recurrent infections (n=2)."Although this is a retrospective study with a limited sample size, this data shows that pediatric patients with HCV have potentially significant symptoms and physiologic liver changes related to HCV," the researchers concluded.
Therefore, they continued, "it is important to not delay proper evaluation and treatment of children with HCV as they may have liver disease and suffer from significant symptoms. Furthermore, it may be more important than generally thought to develop safe and effective pediatric protocols."
Response to Interferon plus Ribavirin
In the second study, researchers looked at long-term response in children with hepatitis C treated with interferon plus ribavirin.
It adults, sustained virological response (SVR), or undetectable HCV RNA 24 weeks after completion of therapy, predicts long-term clearance (> 5 years), and is widely considered to be a "cure." However, it is not known whether this also holds true for pediatric patients.
In the present study, the investigators aimed to confirm long-term HCV clearance in children treated with conventional (non-pegylated) interferon plus ribavirin. The analysis included 97 participants in 2 pediatric clinical trials (56 sustained responders and 41 non-responders) who completed at least 24 weeks of follow-up.
Participants were assessed annually for up to 5 years for clinical evidence of liver disease progression and virological evidence of HCV relapse. The 56 sustained responders were followed for a mean of 261 weeks and the 41 non-responders for a mean of 238 weeks. 82% of sustained responders and 71% of non-responders completed 3 years of follow-up; 75% and 63%, respectively, completed 5 years of follow-up
• 1 sustained responder relapsed during the 5-year follow-up, at year 1.Conclusion
"SVR 24 weeks following therapy with [interferon plus ribavirin] in pediatric patients predicts long-term clearance of HCV," the researchers concluded.
They added that these results confirm those of prior research in adult patients, and "suggest that successful treatment (SVR) of HCV infection with [interferon plus ribavirin] leads to a clinical cure in both adults and children."
WA Henderson, CM Hadigan, JJ Feld, and others. Symptomatic and physiologic presentations in a cohort of pediatric patients with hepatitis C. Digestive Disease Week (DDW) 2008. San Diego, CA. May 17-22, 2008. Abstract S1944.
D Kelly, B Haber, RP Gonzalez-Peralta, and others. Clearance of HCV in children at 5-year follow-up is predicted by sustained virologic response at 24 weeks post treatment with interferon alfa-2b plus ribavirin. Digestive Disease Week (DDW) 2008. San Diego, CA. May 17-22, 2008. Abstract S1004.
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