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A Phase 3 Study of Telaprevir in Combination With Pegasys® and Copegus® in Treatment-Naive Subjects With Genotype 1 Hepatitis C Virus (HCV)

This study has been completed.
Sponsor:
Collaborator:
Tibotec Pharmaceutical Limited
Information provided by (Responsible Party):
Vertex Pharmaceuticals Incorporated
ClinicalTrials.gov Identifier:
NCT00627926
First received: February 22, 2008
Last updated: July 16, 2014
Last verified: July 2014
  Purpose

A Phase 3 study to evaluate the efficacy and safety of two dosing regimens of telaprevir in combination with pegylated interferon alfa 2a (Peg-IFN-alfa-2a) and ribavirin (RBV).


Condition Intervention Phase
Hepatitis C
Biological: Pegylated Interferon Alfa 2a
Drug: Telaprevir
Drug: Ribavirin
Other: Placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase 3 Study of 2 Dose Regimens of Telaprevir in Combination With Peginterferon Alfa-2a (Pegasys®) and Ribavirin (Copegus®) in Treatment-Naive Subjects With Genotype 1 Chronic Hepatitis C

Resource links provided by NLM:


Further study details as provided by Vertex Pharmaceuticals Incorporated:

Primary Outcome Measures:
  • Number of Subjects Achieving Sustained Viral Response (SVR), Demonstrated by Achieving Undetectable Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) Levels 24 Weeks After Last Planned Dose of Study Treatment [ Time Frame: 24 weeks after last planned dose of study treatment (up to Week 72) ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 international units per milliliter (IU/mL) and the lower limit of detection was 10 IU/mL. Two results are reported: 1) Protocol defined SVR: undetectable HCV RNA at 24 weeks after the last planned dose of study treatment without any confirmed detectable HCV RNA between end of treatment visit (up to Week 48) and 24 weeks after last planned dose (up to Week 72); 2) SVR as per FDA guidance (snapshot analysis): undetectable HCV RNA at 24 weeks after the last planned dose of study treatment. Analysis was based only on the HCV RNA assessment in visit window (+/-2 weeks); if there were more than 1 assessment in the window, the last measurement was used.


Secondary Outcome Measures:
  • Number of Subjects With Undetectable HCV RNA at Week 72 [ Time Frame: Week 72 (24 weeks after last dose for subjects with a planned treatment duration of 48 weeks and 48 weeks after last dose for subjects with planned treatment duration of 24 weeks) ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL.

  • Number of Subjects Achieving Rapid Viral Response (RVR), Demonstrated by Achieving Undetectable HCV RNA 4 Weeks After Starting Study Treatment [ Time Frame: Week 4 ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL. RVR was defined as undetectable HCV RNA 4 weeks after the start of study treatment.

  • Number of Subjects Achieving Extended Rapid Viral Response (eRVR), Demonstrated by Achieving Undetectable HCV RNA at Week 4 and at Week 12 [ Time Frame: Week 4 and Week 12 ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL. eRVR was defined as undetectable HCV RNA at both Week 4 and Week 12.

  • Number of Subjects With Undetectable HCV RNA at Week 12 [ Time Frame: Week 12 ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL.

  • Number of Subjects With Undetectable HCV RNA at End of Treatment (EOT) [ Time Frame: End of treatment (up to Week 48) ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL.

  • Number of Subjects With Undetectable HCV RNA 12 Weeks After Last Planned Dose of Study Treatment [ Time Frame: 12 weeks after last planned dose of study treatment (up to Week 60) ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL.

  • Number of Subjects With Undetectable HCV RNA 24 Weeks After Last Actual Dose of Study Treatment [ Time Frame: 24 weeks after last actual dose of study treatment (up to Week 72) ] [ Designated as safety issue: No ]
    The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL.

  • Number of Subjects With Viral Relapse Planned and Viral Relapse Actual [ Time Frame: After last dose of study drug up to 24 week antiviral follow-up (up to Week 72) ] [ Designated as safety issue: No ]
    Viral relapse was defined as having detectable HCV RNA during antiviral follow-up. The plasma HCV RNA level was measured using Roche TaqMan HCV RNA assay. The lower limit of quantification was 25 IU/mL and the lower limit of detection was 10 IU/mL. For viral relapse, 2 analyses were performed: planned and actual. The planned analyses was measured from the end of treatment (EOT) visit to 24 weeks after the last planned dose of study treatment. The actual analyses was measured from the EOT visit to 24 weeks after the last actual dose of study treatment.

  • Biochemical Response: Number of Subjects With Grade 3 and 4 Shifts From Baseline in Alanine Aminotransferase (ALT) and Aspartate Aminotransferase (AST) Levels [ Time Frame: Baseline up to Week 48 ] [ Designated as safety issue: No ]
    Criteria for grading severity (toxicity) of ALT and AST: Grade 0 (<1.25*upper limit of normal [ULN]); Grade 1 (mild=1.25 to 2.5*ULN); Grade 2 (moderate=2.6 to 5.0*ULN); Grade 3 (severe= greater than 5.0 to 20.0*ULN); Grade 4 (life-threatening= greater than 20.0*ULN). Number of subjects with Grade 3 shift (from Grade 0, Grade 1 or Grade 2 baseline) and Grade 4 shift (from Grade 0, Grade 1, Grade 2 or Grade 3 baseline) are reported. If a subject experienced more than 1 severity grade shifts during post baseline assessments, the maximum severity grade shift was considered.

  • Noninvasive Markers of Fibrosis: Number of Subjects With Improvement in FibroTest Analysis [ Time Frame: Baseline through 24 weeks after last planned dose of study treatment (up to Week 72) ] [ Designated as safety issue: No ]
    FibroTest analysis was a biomarker analysis test used to generate a score that was correlated with the degree of liver damage. The FibroTest score was calculated from the results of a six-parameter blood test, combining six serum markers (alpha-2-macroglobulin, haptoglobin, apolipoprotein A1, gamma-glutamyl transpeptidase, total bilirubin, and alanine transaminase). The FibroTest score (F score) may range from 0.00 (Grade F0) to 1.00 (Grade F4), where F0= no fibrosis and F4=cirrhosis. Results were presented separately for subjects who achieved SVR at 24 weeks after the last planned dose of study treatment and those who did not achieve SVR at 24 weeks after the last planned dose of study treatment. Improvement was defined as decrease of at least 1 grade relative to baseline.

  • Fatigue Severity Scale (FSS) Total Score [ Time Frame: Baseline, Week 4, 12, 24, 36, 48, 72 ] [ Designated as safety issue: No ]
    FSS was a 9-item questionnaire where each item was scored on a scale of 1 to 7 (higher scores indicated higher influence of fatigue). FSS total score was calculated as the average of individual items on the questionnaire and FSS total score ranged from 1 to 7, where higher score indicated higher influence of fatigue.

  • Number of Subjects With Adverse Events (AEs) and Serious Adverse Events (SAEs) [ Time Frame: Baseline up to Week 48 ] [ Designated as safety issue: Yes ]
    AE: any adverse change from the subject's baseline (pre-treatment) condition, including any adverse experience, abnormal recording or clinical laboratory assessment value which occurs during the course of the study, whether it is considered related to the study drug or not. An adverse event includes any newly occurring event or previous condition that has increased in severity or frequency since the administration of study drug. SAE: medical event or condition, which falls into any of the following categories, regardless of its relationship to the study drug: death, life threatening adverse experience, in-patient hospitalization/prolongation of hospitalization, persistent/significant disability or incapacity, congenital anomaly/birth defect, important medical event. "Study drug" includes all investigational agents (including placebo, if applicable) administered during the course of the study.


Enrollment: 1095
Study Start Date: March 2008
Study Completion Date: May 2010
Primary Completion Date: May 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: PBO 12 Week+Peg-IFN-alfa-2a, RBV 48 Week
Placebo (PBO) matched to telaprevir 750 mg tablet thrice daily for 12 weeks in combination with pegylated interferon alfa 2a (Peg-IFN-alfa-2a) 180 microgram per week (mcg/week) subcutaneous injection and ribavirin (RBV) tablet orally twice daily at a dose of 1000 milligram per day (mg/day) for subjects weighing less than (<) 75 kilogram (kg) and 1200 mg/day for subjects weighing greater than or equal to (>=) 75 kg, for 48 weeks.
Biological: Pegylated Interferon Alfa 2a
subcutaneous injection, 180 micrograms once per week
Other Name: Pegasys, Peg-IFN-alfa-2a
Drug: Ribavirin
200 mg tablets administered orally twice daily at a dose of 1000 mg/day for subjects weighing <75 kg and 1200 mg/day for subjects weighing ≥75 kg
Other Name: Copegus, RBV
Other: Placebo
Telaprevir matching placebo
Experimental: Telaprevir 8 Week, PBO 4 Week+Peg-IFN-alfa-2a, RBV 24/48 Week
Telaprevir 750 mg tablet thrice daily for 8 weeks, then PBO matched to Telaprevir 750 mg tablet thrice daily for 4 weeks in combination with Peg-IFN-alfa-2a 180 mcg/week subcutaneous injection and RBV tablet orally twice daily at a dose of 1000 mg/day for subjects weighing <75 kg and 1200 mg/day for subjects weighing >=75 kg, for 24 to 48 weeks depending on individual response to telaprevir treatment.
Biological: Pegylated Interferon Alfa 2a
subcutaneous injection, 180 micrograms once per week
Other Name: Pegasys, Peg-IFN-alfa-2a
Drug: Telaprevir
375 mg tablets administered orally every 8 hours at a dose of 750 mg
Other Name: VX-950
Drug: Ribavirin
200 mg tablets administered orally twice daily at a dose of 1000 mg/day for subjects weighing <75 kg and 1200 mg/day for subjects weighing ≥75 kg
Other Name: Copegus, RBV
Other: Placebo
Telaprevir matching placebo
Experimental: Telaprevir 12 Week+Peg-IFN-alfa-2a, RBV 24/48 Week
Telaprevir 750 mg tablet thrice daily for 12 weeks in combination with Peg-IFN-alfa-2a 180 mcg/week subcutaneous injection and RBV tablet orally twice daily at a dose of 1000 mg/day for subjects weighing <75 kg and 1200 mg/day for subjects weighing >=75 kg, for 24 to 48 weeks depending on individual response to telaprevir treatment.
Biological: Pegylated Interferon Alfa 2a
subcutaneous injection, 180 micrograms once per week
Other Name: Pegasys, Peg-IFN-alfa-2a
Drug: Telaprevir
375 mg tablets administered orally every 8 hours at a dose of 750 mg
Other Name: VX-950
Drug: Ribavirin
200 mg tablets administered orally twice daily at a dose of 1000 mg/day for subjects weighing <75 kg and 1200 mg/day for subjects weighing ≥75 kg
Other Name: Copegus, RBV

  Eligibility

Ages Eligible for Study:   18 Years to 70 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria

  • Has not received any previous treatment with any approved or investigational drug or drug regimen for the treatment of hepatitis C
  • Male and female subjects, 18 to 70 years of age, inclusive
  • Genotype 1, chronic hepatitis C with detectable Hepatitis C Virus (HCV) Ribonucleic Acid (RNA)
  • Screening laboratory values, tests, and physical exam within acceptable ranges
  • Able and willing to follow contraception requirements
  • Able to read and understand, and willing to sign the informed consent form and abide by the study restrictions

Exclusion Criteria

  • Subject has any contraindications to Pegasys® or Copegus® therapy
  • Evidence of hepatic decompensation in cirrhotic subjects
  • History of organ transplant
  • History of, or any current medical condition which could impact the safety of the subject in participation in the study
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00627926

  Show 116 Study Locations
Sponsors and Collaborators
Vertex Pharmaceuticals Incorporated
Tibotec Pharmaceutical Limited
Investigators
Study Director: Medical Monitor Vertex Pharmaceuticals Incorporated
  More Information

No publications provided by Vertex Pharmaceuticals Incorporated

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Vertex Pharmaceuticals Incorporated
ClinicalTrials.gov Identifier: NCT00627926     History of Changes
Other Study ID Numbers: VX07-950-108
Study First Received: February 22, 2008
Results First Received: June 22, 2011
Last Updated: July 16, 2014
Health Authority: United States: Food and Drug Administration

Keywords provided by Vertex Pharmaceuticals Incorporated:
Genotype 1

Additional relevant MeSH terms:
Hepatitis
Hepatitis A
Hepatitis C
Digestive System Diseases
Enterovirus Infections
Flaviviridae Infections
Hepatitis, Viral, Human
Liver Diseases
Picornaviridae Infections
RNA Virus Infections
Virus Diseases
Interferon-alpha
Interferons
Peginterferon alfa-2a
Ribavirin
Anti-Infective Agents
Antimetabolites
Antineoplastic Agents
Antiviral Agents
Immunologic Factors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses

ClinicalTrials.gov processed this record on November 24, 2014