Hepatitis Clinical Trial
Official title:
Treatment of Nonalcoholic Steatohepatitis With Metformin
Nonalcoholic Steatohepatitis (NASH) is associated with progressive liver disease, fibrosis,
and cirrhosis. Although the cause of NASH is unknown, it is often associated with obesity,
type 2 diabetes, and insulin resistance. At present, there are no approved treatments for
NASH patients, but an experimental approach has focused on improving their insulin
sensitivity. Metformin is one of the most commonly used medications for the treatment of
diabetes.
The purpose of this study is to determine whether the medical problems of NASH patients,
specifically liver damage, improves when their insulin sensitivity is enhanced with
metformin.
The study will last 3 to 5 years and will enroll up to 30 patients. Participants will
undergo a complete medical examination, a series of lab tests, and a liver biopsy. They will
then start taking a single 500-mg tablet of metformin once a day for 2 weeks, then the same
dosage twice a day for 2 more weeks, if they tolerate the first dosage. The dosage will
increase to 1,000 mg twice a day for the remaining 44 weeks of the study. After 1 year,
participants will undergo a repeat medical examination and liver biopsy.
Status | Completed |
Enrollment | 28 |
Est. completion date | March 2008 |
Est. primary completion date | March 2008 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 18 Years and older |
Eligibility |
- INCLUSION CRITERIA: 1. Age at entry at least 18 years. 2. Serum alanine (ALT) or aspartate (AST) aminotransferase activities that are above the upper limits of normal. 3. Evidence of steatohepatitis on liver biopsy done within the previous 12 months with a NASH activity score of at least 4 (of a total possible score of 16) including a score of at least 1 each for steatosis, hepatocellular injury and parenchymal inflammation. Histological criteria of steatohepatitis include: (1) macrovesicular steatosis, (2) acinar zone 3 hepatocellular injury (ballooning degeneration), (3) parenchymal and (4) portal inflammation. Additionally helpful, but not required, features include the presence of (5) Mallory's hyaline and (6) pericellular and/or sinusoidal fibrosis that predominantly involves zone 3. 4. Written informed consent. EXCLUSION CRITERIA: 1. Evidence of another form of liver disease. 1. Hepatitis B as defined as presence of hepatitis B surface antigen (HBsAg). 2. Hepatitis C as defined by presence of hepatitis C virus (HCV) RNA in serum. 3. Autoimmune hepatitis as defined by anti-nuclear antibody (ANA) of 1:160 or greater and liver histology consistent with autoimmune hepatitis or previous response to immunosuppressive therapy. 4. Autoimmune cholestatic liver disorders as defined by elevation of alkaline phosphatase and anti-mitochondrial antibody of greater than 1:80 or liver histology consistent with primary biliary cirrhosis or elevation of alkaline phosphatase and liver histology consistent with sclerosing cholangitis. 5. Wilson disease as defined by ceruloplasmin below the limits of normal and liver histology consistent with Wilson disease. 6. Alpha-1-antitrypsin deficiency as defined by alpha-1-antitrypsin level less than normal and liver histology consistent with alpha-1-antitrypsin deficiency. 7. Hemochromatosis as defined by presence of 3+ or 4+ stainable iron on liver biopsy and homozygosity for C282Y or compound heterozygosity for C282Y/H63D. 8. Drug-induced liver disease as defined on the basis of typical exposure and history. 9. Bile duct obstruction as shown by imaging studies. 2. History of excess alcohol ingestion, averaging more than 30 gm/day (3 drinks per day) in the previous 10 years, or history of alcohol intake averaging greater than 10 gm/day (1drink per day: 7 drinks per week) in the previous one year. 3. Contraindications to liver biopsy: platelet counts less than 75,000/mm(3) or prothrombin time greater than 16 seconds. 4. Decompensated liver disease, Child-Pugh score greater than or equal to 7 points. 5. History of gastrointestinal bypass surgery or ingestion of drugs known to produce hepatic steatosis including corticosteroids, high-dose estrogens, methotrexate, tetracycline or amiodarone in the previous 6 months. 6. Presence of diabetes mellitus as defined by: fasting plasma glucose of greater than or equal to 126 mg/dl on two separate occasion, or diabetic symptoms with a random plasma glucose of greater than or equal to 200 mg/dl (34). 7. Use of anti-diabetic drugs, including insulin, biguanides, sulfonylureas, or thiazolidinediones in the previous 6 months. 8. Significant systemic or major illnesses other than liver disease, including congestive heart failure, coronary artery disease, cerebrovascular disease, pulmonary disease with hypoxia, renal failure, organ transplantation, serious psychiatric disease, malignancy that, in the opinion of the investigator would preclude treatment with metformin and adequate follow up. 9. Positive test for anti-HIV. 10. Active substance abuse, such as alcohol, inhaled or injection drugs within the previous one year. 11. Pregnancy or inability to practice adequate contraception in women of childbearing potential. 12. Evidence of hepatocellular carcinoma: alpha-fetoprotein levels greater than 200 ng/ml and/or liver mass on imaging study that is suggestive of liver cancer. 13. Any other condition, which, in the opinion of the investigators would impede competence or compliance or possibly hinder completion of the study. 14. History of hypersensitivity reactions to metformin. 15. Serum creatinine greater than 1.5 mg/dl in men and greater than 1.4 mg/dl in women. |
Endpoint Classification: Efficacy Study, Masking: Open Label, Primary Purpose: Treatment
Country | Name | City | State |
---|---|---|---|
United States | National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland |
Lead Sponsor | Collaborator |
---|---|
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) |
United States,
Caldwell SH, Oelsner DH, Iezzoni JC, Hespenheide EE, Battle EH, Driscoll CJ. Cryptogenic cirrhosis: clinical characterization and risk factors for underlying disease. Hepatology. 1999 Mar;29(3):664-9. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in the Histological NASH Activity Index at 48 Weeks Compared With Baseline (Number of Participants in Each Change Category) | Patients under went liver biopsy, metabolic profiling and imaging studies before and at the end 48 weeks of metformin (2000 mg/day) therapy. The primary endpoint is a three point improvement in the histological NASH activity index with a decrease in at least two of the component scores and no worsening of fibrosis or increase in Mallory bodies. | from baseline to 48 Weeks | No |
Secondary | Change in Serum Alanine Aminotransferase (ALT) Levels From Baseline (Number of Participants in Each Change Category) | Alanine transaminase <42 U/L is considered normal | from baseline to 48 weeks | No |
Secondary | Change in Insulin Sensitivity (Glucose Tolerance, Homeostatic Model Assessment of Insulin Resistence (HOMA-IR)) From Baseline | HOMA-IR is calculated from Fasting Glucose and Fasting Insulin | from baseline to 48 weeks | No |
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