Post-marketing Surveillance of Children With Chronic Hepatitis C Treated With Intron A (Vial or Pen) and Rebetol (Study P04397)(TERMINATED)

• Patients with chronic hepatitis C (serum HCV-RNA-positive)
• Age 3 to 17 years
• Treatment-naïve
• Platelets >= 100,000/mm\^3
• Neutrophil counts >= 1,500/ mm\^3
• TSH must be within normal limits
• Hemoglobin >=12 g/dL (females); >=13 g/dL (males)
• Women of childbearing potential must have a routine pregnancy test performed monthly during treatment and for 7 months thereafter. Sexually active female subjects of childbearing potential must be practicing adequate contraception (intrauterine device, oral contraceptives, implanted contraceptives, surgical sterilization, barrier method, or monogamous relationship with a male partner who has had a vasectomy or is using a condom (+ spermicide) during the treatment period and for 7 months after stopping treatment.
• Sexually active male subjects must be practicing acceptable methods of contraception (vasectomy, use of condom + spermicide, monogamous relationship with a female partner who practices an acceptable method of contraception) during the treatment period and for 7 months after stopping treatment.

Exclusion Criteria:

• Contraindications according to the SPC and European approval
• Pretreatment of chronic hepatitis C
• Liver decompensation
• Hypersensitivity to the active substance or to any interferons or to any of the excipients
• Pregnant woman
• Woman who are breast feeding
• Existence of or history of psychiatric condition, in particular depression, suicidal ideation or suicide attempt
• A history of severe pre-existing cardiac disease, including unstable or uncontrolled cardiac disease in the previous six months
• Severe debilitating medical conditions, including patients with chronic renal failure or creatinine clearance \< 50 mlLmin
• Autoimmune hepatitis or history of autoimmune disease
• Severe hepatic dysfunction or decompensated cirrhosis of the liver
• Pre- existing thyroid disease unless it can be controlled with conventional therapy
• Epilepsy and/or compromised central nervous system function
• Individual decision of physician if patient suitable for treatment (e.g., disturbance of growth)