Conditions: Hepatitis C, Chronic
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 4469
Healthy volunteers: no

Brief summary:
The objective is to compare the safety and efficacy of the following three treatment regimens in previously untreated adult subjects with chronic hepatitis C infected with Genotype 1: (1) PegIntron 1.5 µg/kg/wk in combination with weight based REBETOL (800-1400 mg/day); (2) PegIntron 1µg/kg/wk in combination with weight based REBETOL (800-1400 mg/day); and (3) PEGASYS 180 µg/wk plus COPEGUS 1000-1200 mg/day.

Detailed description:
PegIntron Dose will be administered once weekly subcutaneously on the same day of the week:

Screening 2 Weight 40-50 kg Volume to Inject (mL) 0.22; Screening 2 Weight 51-60 kg Volume to Inject (mL) 0.28; Screening 2 Weight 61-75 kg Volume to Inject (mL) 0.33; Screening 2 Weight 76-85 kg Volume to Inject (mL) 0.41; Screening 2 Weight 86-104 kg Volume to Inject (mL) 0.48; Screening 2 Weight 105-125 kg Volume to Inject (mL) 0.58 from two vials

REBETOL Dosage (for Use With PegIntron):

Screening 2 Weight 40-65 kg Daily Dose 800 mg; Screening 2 Weight \>65-85 kg Daily Dose 1000 mg; Screening 2 Weight \>85-105 kg Daily Dose 1200 mg; Screening 2 Weight \>105-125 kg Daily Dose 1400 mg

The PEGASYS dose of 1 mL (180 µg) will be administered once weekly subcutaneously on the same day of the week

COPEGUS Dosage (for Use With PEGASYS):

Screening 2 Weight \<75 kg Daily Dose 1000 mg; Screening 2 Weight \> or = 75 kg Daily Dose 1200mg

NOTE: Double Blind for PegIntron; Open Label for REBETOL, PEGASYS and COPEGUS

NOTE: REBETOL is the Schering-Plough brand name for ribavirin. COPEGUS is the Hoffman-La Roche brand name for ribavirin.

Arms:
arm 1: PegIntron (peginterferon alfa-2b; SCH 54031) 1.5 ug/kg/week in combination with weight-based REBETOL (ribavirin; SCH 18908) 800-1400 mg/day administered for 48 weeks with 24-week post-treatment follow-up arm 2: PegIntron (peginterferon alfa-2b; SCH 54031) 1.0 ug/kg/week in combination with weight-based REBETOL (ribavirin; SCH 18908) 800-1400 mg/day administered for 48 weeks with 24-week post-treatment follow-up arm 3: PEGASYS (peginterferon alfa-2a) 180 ug/week plus COPEGUS (ribavirin) 1000-1200 mg/day administered for 48 weeks with 24-week post-treatment follow-up

Interventions: intervention 1: PegIntron (peginterferon alfa-2b; SCH 54031) intervention 2: PegIntron (peginterferon alfa-2b; SCH 54031) intervention 3: REBETOL (ribavirin; SCH 18908) intervention 4: PEGASYS (peginterferon alfa-2a) intervention 5: COPEGUS (ribavirin)
Intervention descriptions: intervention 1: 1.5 ug/kg/week subcutaneously (SC) for 48 weeks intervention 2: 1.0 ug/kg/week SC for 48 weeks intervention 3: weight based dose 800-1400 mg/day orally (PO) for 48 weeks intervention 4: 180 ug/week SC administered for 48 weeks intervention 5: 1000-1200 mg/day PO for 48 weeks

Protocol document: