Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Insulin Resistance Associated With Chronic Hepatitis C (CHC) and the Effect of Antiviral Therapy

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified September 2005 by University Health Network, Toronto.
Recruitment status was:  Recruiting
Information provided by:
University Health Network, Toronto Identifier:
First received: September 9, 2005
Last updated: November 28, 2005
Last verified: September 2005

The literature suggests that there may be an association between hepatitis C and type 2 diabetes mellitus independent of the presence of cirrhosis, the likely mechanism for which is insulin resistance. The prevalence of insulin resistance in patients with hepatitis C is unknown. Furthermore, there are no studies that indicate an increased prevalence of insulin resistance in patients with hepatitis C compared to other etiologies of liver disease. The role that hepatitis C may have in the development of insulin resistance is unclear. The effect of antiviral therapy for hepatitis C virus on insulin resistance has not been addressed. The long-term consequence of insulin resistance is type 2 diabetes mellitus. There is significant morbidity and mortality from type 2 diabetes mellitus in the general population, and similar complications would be expected in patients with hepatitis C and insulin resistance particularly if they develop type 2 diabetes mellitus.

Our hypothesis: The prevalence of insulin resistance is increased in patients with chronic hepatitis C compared to chronic hepatitis B. Secondarily, insulin resistance when present in patients with chronic hepatitis C improves with successful antiviral therapy.

This study has two phases. The first phase of our study will be to estimate the prevalence of insulin resistance in individuals with chronic hepatitis C without cirrhosis compared to patients with chronic hepatitis B without cirrhosis. The second phase of the study will be restricted to those patients with hepatitis C found to be insulin resistant from phase 1, in the absence of known risk factors for insulin resistance (cirrhosis, diabetes). The effect on insulin resistance of anti-viral therapy to eradicate hepatitis C will be assessed.

Condition Intervention
Hepatitis C
Hepatitis B
Drug: Pegasys; Copegus.

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Insulin Resistance Associated With Chronic Hepatitis C (CHC) and the Effect of Anti-Viral Therapy

Resource links provided by NLM:

Further study details as provided by University Health Network, Toronto:

Primary Outcome Measures:
  • Phase I - To evaluate the prevalence of insulin resistance in patients with hepatitis C without cirrhosis and compare it to that observed in patients with hepatitis B also without cirrhosis.
  • Phase II - Interventional phase - To evaluate the effect of anti-viral therapy on insulin resistance, determined by the OGTT method, in patients with hepatitis C found to have insulin resistance pre-treatment.
  • - To evaluate the safety, efficacy and tolerability of Pegasys (peginterferon alfa-2a) given in combination with Copegus (ribavirin) given for 24 weeks or 48 weeks in treatment naïve patients with chronic hepatitis C (CHC).

Estimated Enrollment: 200
Study Start Date: August 2003
  Show Detailed Description


Ages Eligible for Study:   18 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • patients attending Liver Clinic at Toronto Western Hospital, Toronto, ON, Canada
  • Male and female patients
  • Serologic evidence of chronic hepatitis C infection by an anti-HCV antibody test
  • Detectable serum HCV-RNA
  • Negative urine or blood pregnancy test (for women of childbearing potential) documented within the 24-hour period prior to the first dose of study drug
  • All fertile males and females receiving Copegus must be using two forms of effective contraception during treatment and during the 6 months after treatment end
  • All patients should have insulin resistance (>2.1) determined by the homeostasis model assessment (HOMA) method.

Exclusion Criteria:

  • Women with ongoing pregnancy or breast feeding
  • Therapy with any systemic anti-neoplastic or immunomodulatory treatment (including supraphysiologic doses of steroids and radiation) < 6 months prior to the first dose of study drug
  • Any investigational drug < 6 weeks prior to the first dose of study drug
  • Co-infection with active hepatitis A, hepatitis B and/or human immunodeficiency virus (HIV)
  • History or other evidence of a medical condition associated with chronic liver disease other than HCV (e.g., hemochromatosis, autoimmune hepatitis, metabolic liver disease, alcoholic liver disease, toxin exposures)
  • Signs or symptoms of hepatocellular carcinoma
  • History or other evidence of bleeding from esophageal varices or other conditions consistent with decompensated liver disease
  • Neutrophil count <1500 cells/mm3 or platelet count <90,000 cells/mm3 at screening
  • Serum creatinine level >1.5 times the upper limit of normal at screening
  • History of severe psychiatric disease, especially depression. Severe psychiatric disease is defined as treatment with an antidepressant medication or a major tranquilizer at therapeutic doses for major depression or psychosis, respectively, for at least 3 months at any previous time or any history of the following: a suicidal attempt, hospitalization for psychiatric disease, or a period of disability due to a psychiatric disease
  • History of a severe seizure disorder or current anticonvulsant use
  • History of immunologically mediated disease, chronic pulmonary disease associated with functional limitation, severe cardiac disease, major organ transplantation or other evidence of severe illness, malignancy, or any other conditions which would make the patient, in the opinion of the investigator, unsuitable for the study
  • History of thyroid disease poorly controlled on prescribed medications, elevated thyroid stimulating hormone (TSH) concentrations with elevation of antibodies to thyroid peroxidase and any clinical manifestations of thyroid disease
  • Evidence of severe retinopathy (e.g. CMV retinitis, macula degeneration)
  • Evidence of drug abuse (including excessive alcohol consumption) within one year of study entry
  • Inability or unwillingness to provide informed consent or abide by the requirements of the study
  • Cirrhosis on liver biopsy
  • Type II diabetes mellitus
  • Diabetogenic medications including steroids
  • Current daily alcohol use of greater than 20 gm
  • Known hypersensitivity to any of the contents of the study drug
  • Patients currently participating in other Clinical Trials
  • Patients previously treated for hepatitis C / received alfa-interferon

Additional exclusion criteria for patients receiving Copegus:

  • Male partners of women who are pregnant
  • Hgb <12 g/dL in women or <13 g/dL in men at screening
  • Any patient with an increased baseline risk for anemia (e.g. thalassemia, spherocytosis, history of GI bleeding, etc) or for whom anemia would be medically problematic
  • Patients with documented or presumed coronary artery disease or cerebrovascular disease should not be enrolled if, in the judgment of the investigator, an acute decrease in hemoglobin by up to 4 g/dL (as may be seen with Copegus therapy) would not be well-tolerated
  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 identifier: NCT00188240

Contact: Tharini Ganeshram 416-603-5839

Canada, Ontario
Liver Clinic, Toronto Western Hospital, UHN. Recruiting
Toronto, Ontario, Canada, M5T 2S8
Contact: E.J.L. (Jenny) Heathcote, MD    416-603-5914      
Principal Investigator: E.J.L (Jenny) Heathcote, M.D.         
Sponsors and Collaborators
University Health Network, Toronto
Principal Investigator: E.J.L (Jenny) Heathcote, MD UHN - Toronto Western Hospital, University of Toronto
  More Information Identifier: NCT00188240     History of Changes
Other Study ID Numbers: 03-0510-AE 04-0292-A
Study First Received: September 9, 2005
Last Updated: November 28, 2005

Keywords provided by University Health Network, Toronto:
hepatitis C
insulin resistance
antiviral therapy

Additional relevant MeSH terms:
Hepatitis A
Hepatitis C
Hepatitis, Chronic
Hepatitis B
Insulin Resistance
Hepatitis C, Chronic
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Hepadnaviridae Infections
DNA Virus Infections
Glucose Metabolism Disorders
Metabolic Diseases
Hypoglycemic Agents
Physiological Effects of Drugs processed this record on April 21, 2017