Treating Nonalcoholic Steatohepatitis With Pioglitazone

Completed · Phase 2

Conditions studied: Hepatitis

In brief

Nonalcoholic steatohepatitis (NASH) is a common liver disease that resembles alcoholic hepatitis but occurs in persons who drink little or no alcohol. The etiology of NASH is unclear, but it is commonly associated with diabetes, obesity, and insulin resistance. Several pilot studies, including a study of pioglitazone at the NIH Clinical Center (01-DK-0130), have shown that the insulin-sensitizing thiazolidinediones lead to decreases in serum alanine aminotransferase (ALT) levels and improved liver histology. Once therapy is stopped, however, ALT levels rapidly return to pre-treatment values. Inaddition we are currently enrolling patients with NASH in a pilot study of metformin therapy for 48-weeks, however our results in 3 patients thus far have not been very encouraging. In the current study, patients who have completed the pilot study of pioglitazone and have been off therapy for 48 weeks will be offered re-treatment for 3 years. We also propose to treat patients who have not had a satisfactory response to metformin with pioglitazone for the same duration. After a repeat medical and metabolic evaluation and liver biopsy, patients with moderate-to-severe NASH (activity score greater than or equal to 4) will restart pioglitazone at a dose of 15 mg daily. If after 48 weeks, ALT levels are not normal or improved to the degree identified during the pilot study, the dose will be increased to 30 mg daily at the end of 3 years, all patients will undergo repeat medical and metabolic evaluation and liver biopsy. The primary end point will be improvement in liver histology. Secondary end points will be improvements in insulin sensitivity, reduction in visceral fat, liver volume, and liver biochemistry. The aim of this study is to evaluate whether long-term pioglitazone therapy can safely achieve and maintain biochemical and histological improvements in NASH. ...

Key facts

Study ID: NCT00062764
Run by: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
People needed: 18
Starts: 2003-06-01
Expected to finish: 2009-02-01
Last updated by the study team: 2012-12-19

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may not qualify if…

Evidence of another form of liver disease (these largely will have been excluded based upon enrollment in the previous study, 01-DK-0130 and 03-DK-0233).
Hepatitis B as defined as presence of hepatitis B surface antigen (HBsAg).
Hepatitis C as defined by presence of hepatitis C virus (HCV) RNA in serum.
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.
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.
e. Wilson disease as defined by ceruloplasmin below the limits of normal and liver histology consistent with Wilson disease.
Alpha-1-antitrypsin deficiency as defined by alpha-1-antitrypsin level less than normal and liver histology consistent with alpha-1-antitrypsin deficiency.
Hemochromatosis as defined by presence of 3+ or 4 iron on liver biopsy stain and homozygosity for C282Y or compound heterozygosity for C282Y/H63D.
Drug-induced liver disease as defined on the basis of typical exposure and history.
Bile duct obstruction as shown by imaging studies.
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 (1 drink per day: 7 drinks per week) in the previous one year.
Contraindications to liver biopsy: platelet counts less than 75,000/mm(3) or prothrombin time greater than 16 seconds.
Decompensated liver disease, Child-Pugh score greater than or equal to 7 points.
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.
Preexistent diabetes mellitus or the development of diabetes mellitus during the study requiring the use of another drug in addition to pioglitazone for glycaemic control. Diabetes being as defined by: fasting plasma glucose of greater than or equal to 126 mg/dl on two separate occasions, or diabetic symptoms with a random plasma glucose of greater than or equal to 200 mg/dl.
Use of anti-diabetic drugs, including insulin, biguanides, sulfonylureas, or thiazolidinediones at the time of enrollment or in the previous 48 weeks.
Significant systemic or major illnesses other than liver disease, including congestive heart failure, coronary artery disease, cerebrovascular disease, pulmonary disease, renal failure, organ transplantation, serious psychiatric disease, malignancy that, in the opinion of the investigator would preclude treatment with pioglitazone and adequate follow up.
Positive test for anti-HIV.
Active substance abuse, such as alcohol, inhaled or injection drugs within the previous one year.
Pregnancy or inability to practice adequate contraception in women of childbearing potential.
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.
Any other conditions, which, in the opinion of the investigators would impede competence or compliance or possibility, hinder completion of the study.

Where it is running

National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

Full record on ClinicalTrials.gov

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