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CPG10101 Combination Therapy For The Treatment Of Hepatitis C In Non-Responder (Null And Partial Responder) Hepatitis C Virus (HCV) Genotype 1 Infected Subjects

Primary Purpose

Hepatitis, Chronic Active

Status
Completed
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
CPG10101
CPG10101
Control
CPG10101
Sponsored by
Pfizer
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Hepatitis, Chronic Active focused on measuring HCV, Hepatitis c virus, Virus diseases, Interferon-alpha, Interferons, Liver diseases

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria: HCV positive subjects documented by serum HCV RNA concentration > 100,000 IU/mL within 21 days of first study treatment Receipt of adequate previous PEG-IFN and RBV therapy for a minimum of 12 weeks (PEG-IFN alpha-2a doses of > 180 μg/wk or PEG-IFN alpha-2b 1.5 µg/kg/wk and at least 800 mg RBV daily) not resulting in a minimum of a 2 log decrease in HCV RNA concentrations while on treatment (null responders). Or, receipt of adequate previous treatment PEG-IFN and RBV therapy for a minimum of 24 weeks (PEG-IFN alpha-2a doses of ≥ 180 μg/wk or PEG-IFN alpha-2b 1.5 µg/kg/wk and at least 800 mg RBV daily) resulting in a minimum of a 2 log decrease in serum HCV RNA concentrations by 12 weeks of treatment but not resulting in an undetectable viral load after 24 weeks of treatment (partial responders). If dose modifications were necessary during the treatment due to adverse events, the subject must have received at least 80% of the PEG-IFN dose and 80% of the RBV dose to be eligible for the study. HCV genotype 1 only; other HCV genotypes are excluded. Adults, 18+ years old Written informed consent Liver biopsy within 5 years of the first dose of study drug, documenting changes consistent with hepatitis C Adequate bone marrow, liver, and renal function demonstrated by: Hemoglobin > 12 g/dL for females and > 13 g/dL for males White blood cell (WBC) > 3,000/mm3 Neutrophils > 1,500/mm3 Platelets > 80,000/mm3 Total bilirubin < 1.6 mg/dL Direct bilirubin < 1.5 upper limit of normal. If indirect bilirubin is elevated, Gilbert's disease must be documented in chart and substantiated. Albumin > 3.7 g/dL and < 4.9 g/dL Serum creatinine < upper limit of normal per central laboratory. If serum creatinine is > upper limit of normal then calculated creatinine clearance has to be > 100 mL/min (by Cockcroft-Gault formula) for patient to be eligible. Negative pregnancy test in women of childbearing potential. Females of childbearing potential and males who have partners of childbearing potential must use two forms of effective contraception during treatment and during the 6 months after treatment has been concluded. Serum thyroid stimulating hormone (TSH) levels within normal ranges within 21 days of first study treatment, regardless of treatment with L-thyroxin. Exclusion Criteria: Treatment with any IFN based therapies and/or antiviral therapies within 30 days of the first dose of study drug Subjects who have previously received an HCV vaccine Child-Pugh Class B or C History of psychiatric conditions including, but not limited to, psychosis, suicidal ideations, or major depression. Subjects with mild to moderate depression in the past who have a normal to mild Beck Depression Inventory score and no prior history of suicidal gestures or attempts may be enrolled if, in the Investigator's opinion, they are suitable for treatment. Significant cardiovascular disease (e.g., New York Heart Association [NYHA] class 3 congestive heart failure; myocardial infarction within the past 6 months; unstable angina; coronary angioplasty within the past 6 months; or uncontrolled atrial or ventricular cardiac arrhythmias) History of immunodeficiency or autoimmune disease including autoimmune hepatitis, allogeneic transplant, or pre-existing autoimmune or antibody-mediated disease including, but not limited to: systemic lupus erythematosus, rheumatoid arthritis, multiple sclerosis, Sjogren's syndrome, or autoimmune thrombocytopenia. Other serious medical conditions including, but not limited to: HIV-1 Hepatitis B (positive hepatitis B surface antigen [HBsAg]) Cancer (active tumors in the last 5 years) Pregnant, partners of pregnant women, or nursing women Alcohol or drug misuse within 90 days of screening Use of immunosuppressive doses of steroids or any anti-metabolite therapies within 3 months of entry into the study (inhaled and topical corticosteroids are permitted). Receipt of any vaccine or immunoglobulin within 30 days before the first dose of study drug. Flu vaccines are only allowed once the subjects are qualified for 36 additional weeks of treatment. Prior administration of oligodeoxynucleotides (including study medication CPG 10101), ribozymes, or any known allergy to CPG 10101, interferon, RVN or their excipients. Receipt of any investigational drug therapy within 30 days before the first dose of study drug. Any other condition that, in the opinion of the Investigator, may compromise the safety or compliance of the subject or would preclude the subject from successful completion of the study.

Sites / Locations

  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site
  • Pfizer Investigational Site

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm 4

Arm Type

Experimental

Experimental

Active Comparator

Experimental

Arm Label

CPG10101 (0.2) + pegylated inteferon + ribavirin

CPG10101 (0.5) + pegylated inteferon + ribavirin

Pegylated interferon + ribavirin

CPG10101 + pegylated interferon + ribavirin (rollover)

Arm Description

Outcomes

Primary Outcome Measures

Serum HCV RNA concentrations, over 12wks, relative to baseline, early virologic response (EVR)
Serum HCV RNA concentrations, 6months after treatment completed, relative to baseline, sustained virologic response (SVR)

Secondary Outcome Measures

Safety and Tolerability: adverse events, vital signs, clinical and laboratory parameters, depression score, physical exam, electrocardiogram (ECG), ophthalmologic exam (if required)
Dose exposure
Child-Pugh score
Serum Biomarkers: cytokines and chemokines, over time, relative to baseline
Immunophenotyping profile, over time, relative to baseline, HCV specific immune response, over time, relative to baseline, level of innate immune activation at baseline

Full Information

First Posted
January 13, 2006
Last Updated
March 7, 2017
Sponsor
Pfizer
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1. Study Identification

Unique Protocol Identification Number
NCT00277238
Brief Title
CPG10101 Combination Therapy For The Treatment Of Hepatitis C In Non-Responder (Null And Partial Responder) Hepatitis C Virus (HCV) Genotype 1 Infected Subjects
Official Title
CPG 10101 Combination Therapy for the Treatment of Hepatitis C: A Phase II Randomized, Open Label, Multi-Center, Parallel Arm, Controlled Trial of CPG 10101 at Two Different Dose Levels With Pegylated-Interferon-Alpha 2B (PEG-IFN) Plus Ribavirin (RBV) or PEG-IFN Plus RBV Without CPG 10101 in the Treatment of Non-Responder (Null and Partial Responder) HCV Genotype 1 Infected Subjects
Study Type
Interventional

2. Study Status

Record Verification Date
March 2017
Overall Recruitment Status
Completed
Study Start Date
February 2006 (undefined)
Primary Completion Date
July 2007 (Actual)
Study Completion Date
July 2007 (Actual)

3. Sponsor/Collaborators

Name of the Sponsor
Pfizer

4. Oversight

Data Monitoring Committee
Yes

5. Study Description

Brief Summary
The purpose of this study is to determine the efficacy and tolerability of CPG 10101 at two different dose levels with pegylated-interferon-alpha 2B (PEG-IFN) plus ribavirin (RBV) compared to PEG-IFN and RBV without CPG 10101 in HCV positive subjects who were classified as non-responders to previous adequate PEG-IFN plus RBV therapy.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Hepatitis, Chronic Active
Keywords
HCV, Hepatitis c virus, Virus diseases, Interferon-alpha, Interferons, Liver diseases

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
113 (Actual)

8. Arms, Groups, and Interventions

Arm Title
CPG10101 (0.2) + pegylated inteferon + ribavirin
Arm Type
Experimental
Arm Title
CPG10101 (0.5) + pegylated inteferon + ribavirin
Arm Type
Experimental
Arm Title
Pegylated interferon + ribavirin
Arm Type
Active Comparator
Arm Title
CPG10101 + pegylated interferon + ribavirin (rollover)
Arm Type
Experimental
Intervention Type
Drug
Intervention Name(s)
CPG10101
Intervention Description
CPG10101, subcutaneous, 0.2mg/kg, weekly, 24wks Pegylated interferon alfa-2b, subcutaneous, 1.5ug/kg, weekly, 24wks Ribavirin, oral, 800-1400mg/day (weight-based), daily, 24wks
Intervention Type
Drug
Intervention Name(s)
CPG10101
Intervention Description
CPG10101, subcutaneous, 0.5mg/kg, weekly, 24wks Pegylated interferon alfa-2b, subcutaneous, 1.5 ug/kg, weekly, 24wks Ribavirin, oral, 800-1400mg/day (weight-based), daily, 24wks
Intervention Type
Drug
Intervention Name(s)
Control
Intervention Description
Pegylated interferon alfa-2b, subcutaneous, 1.5 ug/kg, weekly, 12wks Ribavirin, oral, 800-1400mg/day (weight-based), daily, 12wks
Intervention Type
Drug
Intervention Name(s)
CPG10101
Intervention Description
CPG10101, subcutaneous, 0.5mg/kg, weekly, 24wks Pegylated interferon alfa-2b, subcutaneous, 1.5 ug/kg, weekly, 24wks Ribavirin, oral, 800-1400mg/day (weight-based), daily, 24wks
Primary Outcome Measure Information:
Title
Serum HCV RNA concentrations, over 12wks, relative to baseline, early virologic response (EVR)
Time Frame
12wks
Title
Serum HCV RNA concentrations, 6months after treatment completed, relative to baseline, sustained virologic response (SVR)
Time Frame
72wks
Secondary Outcome Measure Information:
Title
Safety and Tolerability: adverse events, vital signs, clinical and laboratory parameters, depression score, physical exam, electrocardiogram (ECG), ophthalmologic exam (if required)
Time Frame
28wks
Title
Dose exposure
Time Frame
24wks
Title
Child-Pugh score
Time Frame
24wks
Title
Serum Biomarkers: cytokines and chemokines, over time, relative to baseline
Time Frame
24wks
Title
Immunophenotyping profile, over time, relative to baseline, HCV specific immune response, over time, relative to baseline, level of innate immune activation at baseline
Time Frame
24wks

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: HCV positive subjects documented by serum HCV RNA concentration > 100,000 IU/mL within 21 days of first study treatment Receipt of adequate previous PEG-IFN and RBV therapy for a minimum of 12 weeks (PEG-IFN alpha-2a doses of > 180 μg/wk or PEG-IFN alpha-2b 1.5 µg/kg/wk and at least 800 mg RBV daily) not resulting in a minimum of a 2 log decrease in HCV RNA concentrations while on treatment (null responders). Or, receipt of adequate previous treatment PEG-IFN and RBV therapy for a minimum of 24 weeks (PEG-IFN alpha-2a doses of ≥ 180 μg/wk or PEG-IFN alpha-2b 1.5 µg/kg/wk and at least 800 mg RBV daily) resulting in a minimum of a 2 log decrease in serum HCV RNA concentrations by 12 weeks of treatment but not resulting in an undetectable viral load after 24 weeks of treatment (partial responders). If dose modifications were necessary during the treatment due to adverse events, the subject must have received at least 80% of the PEG-IFN dose and 80% of the RBV dose to be eligible for the study. HCV genotype 1 only; other HCV genotypes are excluded. Adults, 18+ years old Written informed consent Liver biopsy within 5 years of the first dose of study drug, documenting changes consistent with hepatitis C Adequate bone marrow, liver, and renal function demonstrated by: Hemoglobin > 12 g/dL for females and > 13 g/dL for males White blood cell (WBC) > 3,000/mm3 Neutrophils > 1,500/mm3 Platelets > 80,000/mm3 Total bilirubin < 1.6 mg/dL Direct bilirubin < 1.5 upper limit of normal. If indirect bilirubin is elevated, Gilbert's disease must be documented in chart and substantiated. Albumin > 3.7 g/dL and < 4.9 g/dL Serum creatinine < upper limit of normal per central laboratory. If serum creatinine is > upper limit of normal then calculated creatinine clearance has to be > 100 mL/min (by Cockcroft-Gault formula) for patient to be eligible. Negative pregnancy test in women of childbearing potential. Females of childbearing potential and males who have partners of childbearing potential must use two forms of effective contraception during treatment and during the 6 months after treatment has been concluded. Serum thyroid stimulating hormone (TSH) levels within normal ranges within 21 days of first study treatment, regardless of treatment with L-thyroxin. Exclusion Criteria: Treatment with any IFN based therapies and/or antiviral therapies within 30 days of the first dose of study drug Subjects who have previously received an HCV vaccine Child-Pugh Class B or C History of psychiatric conditions including, but not limited to, psychosis, suicidal ideations, or major depression. Subjects with mild to moderate depression in the past who have a normal to mild Beck Depression Inventory score and no prior history of suicidal gestures or attempts may be enrolled if, in the Investigator's opinion, they are suitable for treatment. Significant cardiovascular disease (e.g., New York Heart Association [NYHA] class 3 congestive heart failure; myocardial infarction within the past 6 months; unstable angina; coronary angioplasty within the past 6 months; or uncontrolled atrial or ventricular cardiac arrhythmias) History of immunodeficiency or autoimmune disease including autoimmune hepatitis, allogeneic transplant, or pre-existing autoimmune or antibody-mediated disease including, but not limited to: systemic lupus erythematosus, rheumatoid arthritis, multiple sclerosis, Sjogren's syndrome, or autoimmune thrombocytopenia. Other serious medical conditions including, but not limited to: HIV-1 Hepatitis B (positive hepatitis B surface antigen [HBsAg]) Cancer (active tumors in the last 5 years) Pregnant, partners of pregnant women, or nursing women Alcohol or drug misuse within 90 days of screening Use of immunosuppressive doses of steroids or any anti-metabolite therapies within 3 months of entry into the study (inhaled and topical corticosteroids are permitted). Receipt of any vaccine or immunoglobulin within 30 days before the first dose of study drug. Flu vaccines are only allowed once the subjects are qualified for 36 additional weeks of treatment. Prior administration of oligodeoxynucleotides (including study medication CPG 10101), ribozymes, or any known allergy to CPG 10101, interferon, RVN or their excipients. Receipt of any investigational drug therapy within 30 days before the first dose of study drug. Any other condition that, in the opinion of the Investigator, may compromise the safety or compliance of the subject or would preclude the subject from successful completion of the study.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Pfizer CT.gov Call Center
Organizational Affiliation
Pfizer
Official's Role
Study Director
Facility Information:
Facility Name
Pfizer Investigational Site
City
Chicago
State/Province
Illinois
ZIP/Postal Code
60611
Country
United States
Facility Name
Pfizer Investigational Site
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46202
Country
United States
Facility Name
Pfizer Investigational Site
City
New Orleans
State/Province
Louisiana
ZIP/Postal Code
70115
Country
United States
Facility Name
Pfizer Investigational Site
City
Detroit
State/Province
Michigan
ZIP/Postal Code
48202-2689
Country
United States
Facility Name
Pfizer Investigational Site
City
Kansas City
State/Province
Missouri
ZIP/Postal Code
64131
Country
United States
Facility Name
Pfizer Investigational Site
City
St. Louis
State/Province
Missouri
ZIP/Postal Code
63104
Country
United States
Facility Name
Pfizer Investigational Site
City
New York
State/Province
New York
ZIP/Postal Code
10021
Country
United States
Facility Name
Pfizer Investigational Site
City
Durham
State/Province
North Carolina
ZIP/Postal Code
27710
Country
United States
Facility Name
Pfizer Investigational Site
City
Cleveland
State/Province
Ohio
ZIP/Postal Code
44195
Country
United States
Facility Name
Pfizer Investigational Site
City
Hershey
State/Province
Pennsylvania
ZIP/Postal Code
17033
Country
United States
Facility Name
Pfizer Investigational Site
City
Germantown
State/Province
Tennessee
ZIP/Postal Code
38138
Country
United States
Facility Name
Pfizer Investigational Site
City
Dallas
State/Province
Texas
ZIP/Postal Code
75208
Country
United States
Facility Name
Pfizer Investigational Site
City
San Antonio
State/Province
Texas
ZIP/Postal Code
78215
Country
United States
Facility Name
Pfizer Investigational Site
City
Richmond
State/Province
Virginia
ZIP/Postal Code
23249
Country
United States

12. IPD Sharing Statement

Learn more about this trial

CPG10101 Combination Therapy For The Treatment Of Hepatitis C In Non-Responder (Null And Partial Responder) Hepatitis C Virus (HCV) Genotype 1 Infected Subjects

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