Safety and Efficacy of Boceprevir in Previously Untreated Subjects With Chronic Hepatitis C Genotype 1 (Study P05216AM2) (COMPLETED)

NCT ID: NCT00705432

Last Updated: 2017-04-07

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE3
• Total Enrollment: 1472 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-08-31
• Study Completion Date: 2010-05-31

Brief Summary

This study involves treatment with boceprevir or placebo in combination with PegIntron (PEG) + Ribavirin (RBV) (weight-based dosing [WBD]) in previously untreated adult participants with chronic hepatitis C (CHC) genotype 1. It is hypothesized that the addition of a third active anti- Hepatitis C Virus (anti-HCV) drug may lead to more rapid viral response than therapy with two drugs, and therefore, the addition of boceprevir to PegIntron plus ribavirin therapy after a 4-week lead-in period may allow for both increased rates of sustained virologic response (SVR) and shorter treatment durations (in some populations) than treatment with PegIntron plus ribavirin alone.

The study includes two separate cohorts, Cohort I (White participants) and Cohort II (Black participants). Participants from each cohort are assigned (randomized) to one of three study arms, all of which have a 4-week lead-in period with (PEG + RBV).

Detailed Description

Participants from Cohort I and Cohort II are assigned (randomized) to one of three study arms, all of which have a 4-week lead-in period with (PEG + RBV).

1. Control arm, participants are treated with (PEG + RBV + placebo) for 44 weeks after the lead-in.

2. Experimental arm with Response Guided Therapy (RGT)

In this experimental arm, participants are treated with all three drugs (PEG + RBV + boceprevir) for 24 weeks after the lead-in. At treatment week 28, those participants with undetectable Hepatitis C Virus - ribonucleic acid (HCV-RNA) from week 8 (up to treatment week 24), will be considered to complete treatment, and will enter follow-up. Participants with detectable for HCV-RNA at week 8 or later will receive an additional 20 weeks of therapy with PegIntron and Ribavirin (PEG + RBV + placebo).

3. Experimental arm, participants are treated with all three drugs (PEG + RBV + Ribavirin) for 44 weeks after the lead-in.

All participants were followed up to 72 weeks following randomization.

Conditions

Hepatitis C, Chronic

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

1. Placebo + PEG + RBV

PegIntron (PEG) 1.5 μg/kg + Ribavirin (RBV) (weight-based dosing \[WBD\]) for 4 weeks (lead in treatment) followed by placebo + PEG 1.5 μg/kg + RBV (WBD) for 44 weeks with 24 weeks post-treatment follow-up.

Group Type: PLACEBO_COMPARATOR

Peginterferon alfa-2b (PEG)

Intervention Type: BIOLOGICAL

Peginterferon alfa-2b 1.5 μg/kg/week subcutaneously (SC)

Ribavirin (RBV)

Intervention Type: DRUG

Ribavirin weight-based dosing (WBD) 600 mg/day to 1400 mg/day administered orally, divided twice daily (BID).

Placebo

Intervention Type: DRUG

Placebo to boceprevir, 800 mg (4 x 200mg capsules) administered orally three times a day (TID).

2. Boceprevir + PEG + RBV - 24 Weeks (RGT)

PEG 1.5 μg/kg + RBV (WBD) for 4 weeks (lead in treatment) followed by boceprevir + PEG 1.5 μg/kg + RBV (WBD) for 24 weeks. Participants were offered a response guided therapy (RGT) at treatment week 28.

• At the Treatment Week 28 visit, participants whose HCV-RNA was undetectable from Treatment Weeks 8 to Treatment Week 24, will proceed to the 44-week follow-up.
• At the Treatment Week 28 visit, participants with detectable HCV-RNA at Treatment Week 8 or at any subsequent assays will continue on therapy with placebo + PEG 1.5 μg/kg + RBV (WBD) for an additional 20 weeks, to complete a total of 48 weeks on treatment with 24 weeks post-treatment follow-up.

Group Type: EXPERIMENTAL

Peginterferon alfa-2b (PEG)

Intervention Type: BIOLOGICAL

Peginterferon alfa-2b 1.5 μg/kg/week subcutaneously (SC)

Ribavirin (RBV)

Intervention Type: DRUG

Ribavirin weight-based dosing (WBD) 600 mg/day to 1400 mg/day administered orally, divided twice daily (BID).

Boceprevir

Intervention Type: DRUG

Boceprevir, 800 mg (4 x 200 mg capsules) administered orally TID.

3. Boceprevir + PEG + RBV - 44 Weeks

PEG 1.5 μg/kg + RBV (WBD) for 4 weeks (lead in treatment) followed by boceprevir + PEG 1.5 μg/kg + RBV (WBD) for 44 weeks with 24 weeks post-treatment follow-up.

Group Type: EXPERIMENTAL

Peginterferon alfa-2b (PEG)

Intervention Type: BIOLOGICAL

Peginterferon alfa-2b 1.5 μg/kg/week subcutaneously (SC)

Ribavirin (RBV)

Intervention Type: DRUG

Ribavirin weight-based dosing (WBD) 600 mg/day to 1400 mg/day administered orally, divided twice daily (BID).

Boceprevir

Intervention Type: DRUG

Boceprevir, 800 mg (4 x 200 mg capsules) administered orally TID.

Interventions

Peginterferon alfa-2b (PEG)

Peginterferon alfa-2b 1.5 μg/kg/week subcutaneously (SC)

Intervention Type: BIOLOGICAL

Ribavirin (RBV)

Ribavirin weight-based dosing (WBD) 600 mg/day to 1400 mg/day administered orally, divided twice daily (BID).

Intervention Type: DRUG

Placebo

Placebo to boceprevir, 800 mg (4 x 200mg capsules) administered orally three times a day (TID).

Intervention Type: DRUG

Boceprevir

Boceprevir, 800 mg (4 x 200 mg capsules) administered orally TID.

Intervention Type: DRUG

Other Intervention Names

PegIntron; PEG; SCH 54031; Rebetol; RBV; SCH 18908; SCH 503034, Victrelis

Eligibility Criteria

Inclusion Criteria

• Participant must have previously documented CHC genotype 1 infection.
• Participant must have a liver biopsy with histology consistent with CHC and no other etiology.
• Participants with bridging fibrosis or cirrhosis must have an ultrasound within 6 months of the Screening Visit (or between Screening and Day 1) with no findings suspicious for hepatocellular carcinoma (HCC).
• Participant must be >=18 years of age.
• Participant must weigh between 40 kg and 125 kg.
• Participant and participant's partner(s) must each agree to use acceptable methods of contraception for at least 2 weeks prior to Day 1 and continue until at least 6 months after last dose of study drug, or longer if dictated by local regulations.
• Participants must be willing to give written informed consent.

Exclusion Criteria

• Coinfection with the human immunodeficiency virus (HIV) or hepatitis B virus (HBsAg positive).
• Participants who received prior treatment for hepatitis C; other than herbal remedies, except those with known hepatotoxicity.
• Treatment with any investigational drug within 30 days of the randomization visit in this study.
• Participation in any other clinical trial within 30 days of randomization or intention to participate in another clinical trial during participation in this study.
• Evidence of decompensated liver disease including, but not limited to, a history or presence of clinical ascites, bleeding varices, or hepatic encephalopathy.
• Diabetic and/or hypertensive participants with clinically significant ocular examination findings: retinopathy, cotton wool spots, optic nerve disorder, retinal hemorrhage, or any other clinically significant abnormality.
• Pre-existing psychiatric condition(s).
• Clinical diagnosis of substance abuse of the specified drugs within the specified timeframes.
• Any known pre-existing medical condition that could interfere with the participant's participation in and completion of the study.
• Evidence of active or suspected malignancy, or a history of malignancy, within the last 5 years (except adequately treated carcinoma in situ and basal cell carcinoma of the skin). Participants under evaluation for malignancy are not eligible.
• Participants who are pregnant or nursing. Participants who intend to become pregnant during the study period. Male participants with partners who are, or intend to become, pregnant during the study period.
• Any other condition which, in the opinion of a physician, would make the participant unsuitable for enrollment or could interfere with the participant participating in and completing the study.
• Participants who are part of the site personnel directly involved with this study.
• Participants who are family members of the investigational study staff.
• Participants who had life-threatening serious adverse event (SAE) during screening period.
• Protocol-specified hematologic, biochemical, and serologic criteria: Hemoglobin <12 g/dL for females and <13 g/dL for males; Neutrophils <1500/mm^3 (blacks: <1200/mm^3); Platelets <100,000/mm^3; Direct bilirubin >1.5 x upper limit of normal (ULN)
• Serum albumin < lower limit of normal (LLN)
• Thyroid-stimulating hormone (TSH) >1.2 x ULN or <0.8 x LLN of laboratory, with certain exceptions.
• Serum creatinine >ULN of the laboratory reference.
• Protocol-specified serum glucose concentrations.
• protocol-specified alpha fetoprotein levels.
• Prothrombin time/partial thromboplastin time (PT/PTT) values >10% above laboratory reference range.
• Anti-nuclear antibodies (ANA) >1:320.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Merck Sharp & Dohme LLC

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

References

Ferrante SA, Chhatwal J, Brass CA, El Khoury AC, Poordad F, Bronowicki JP, Elbasha EH. Boceprevir for previously untreated patients with chronic hepatitis C Genotype 1 infection: a US-based cost-effectiveness modeling study. BMC Infect Dis. 2013 Apr 27;13:190. doi: 10.1186/1471-2334-13-190.

Reference Type: DERIVED

PMID: 23621902 (View on PubMed)

Poordad F, Bronowicki JP, Gordon SC, Zeuzem S, Jacobson IM, Sulkowski MS, Poynard T, Morgan TR, Molony C, Pedicone LD, Sings HL, Burroughs MH, Sniukiene V, Boparai N, Goteti VS, Brass CA, Albrecht JK, Bacon BR; SPRINT-2 and RESPOND-2 Investigators. Factors that predict response of patients with hepatitis C virus infection to boceprevir. Gastroenterology. 2012 Sep;143(3):608-618.e5. doi: 10.1053/j.gastro.2012.05.011. Epub 2012 May 21.

Reference Type: DERIVED

PMID: 22626609 (View on PubMed)

Poordad F, McCone J Jr, Bacon BR, Bruno S, Manns MP, Sulkowski MS, Jacobson IM, Reddy KR, Goodman ZD, Boparai N, DiNubile MJ, Sniukiene V, Brass CA, Albrecht JK, Bronowicki JP; SPRINT-2 Investigators. Boceprevir for untreated chronic HCV genotype 1 infection. N Engl J Med. 2011 Mar 31;364(13):1195-206. doi: 10.1056/NEJMoa1010494.

Reference Type: DERIVED

PMID: 21449783 (View on PubMed)

Other Identifiers

EUDRACT # 2007-005508-42

Identifier Type: -

Identifier Source: secondary_id

P05216

Identifier Type: -

Identifier Source: org_study_id

NCT00795431

Identifier Type: -

Identifier Source: nct_alias