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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00220961
Other study ID # 02-062A
Secondary ID
Status Completed
Phase Phase 3
First received September 14, 2005
Last updated December 2, 2015
Start date January 2004
Est. completion date April 2010

Study information

Verified date December 2015
Source The University of Texas Health Science Center at San Antonio
Contact n/a
Is FDA regulated No
Health authority United States: Institutional Review Board
Study type Interventional

Clinical Trial Summary

The purpose of this study is to examine whether pioglitazone versus placebo can reduce the conversion rate of impaired glucose tolerance (IGT) to type 2 diabetes mellitus


Description:

IGT is a prediabetic state. If IGT can be prevented from progressing to overt diabetes, the hyperglycemia-related complications of this devastating disease can be prevented. Subjects with IGT will be identified with an oral glucose tolerance test (OGTT). Eligible subjects also will have a measurement of first phase insulin secretion and insulin sensitivity using the frequently sampled intravenous glucose tolerance test (FSIVGTT) and carotid intimal media thickness using carotid ultrasound. Following these measurements subjects will be randomized to receive pioglitazone or placebo and they will return every 3 months for determination of fasting plasma glucose (FPG) concentration and interim medical history. Recruitment will take place over 15 months. From the time that the recruitment period ends, subjects will be followed for a total of 24 months on pioglitazone or placebo. The OGTT will be repeated at 15,27, and 39 months, or if the FPG is ≥ 126 mg/dl on the 3-month follow up visits. If the diagnosis of diabetes is established before month 39 or at month 39, the FSIVGTT and carotid ultrasound will be repeated. At 39 months, subjects will be washed out of pioglitazone or placebo and the OGTT, FSIVGTT, and carotid ultrasound will be repeated at month 45.


Recruitment information / eligibility

Status Completed
Enrollment 600
Est. completion date April 2010
Est. primary completion date April 2010
Accepts healthy volunteers No
Gender Both
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Men and women

- All ethnic groups

- 18 years of age and older

- Impaired glucose tolerance by glucose tolerance test (fasting glucose 95-125 mg/dl and 2 hr glucose of 140-199 mg/dl)

- At least one of the following:

- One or more components of the insulin resistance syndrome (HDL < 40 mg/dl in females and <35 mg/dl in males, fasting triglycerides > 150 mg/dl, blood pressure > 135/85 mmHg, BMI > 24 kg/m2, waist circumference > 102 cm in men and > 88 cm in women)

- One or more first degree relatives with type 2 diabetes

- History of gestational diabetes

- Polycystic ovarian disease

- Minority ethnic background (Mexican American, African American, Asian and Pacific Islanders, Native American)

Exclusion Criteria:

- Type 2 diabetes

- Previously treated with thiazolidinediones (ever) or metformin (within one year)

- Previously treated with a sulfonylurea, a meglitinide, an alpha glucosidase inhibitor for more than a week within last year or within the 3 months prior to randomization

- Previously treated with insulin (other than during pregnancy) for more than one week within the last year or within the 3 months prior to randomization

- Cardiovascular disease

- Hospitalization for treatment of heart disease or stroke in past 6 months

- New York Heart Association Functional Class > 2

- Left bundle branch block or third degree AV block

- Aortic stenosis

- SBP > 180 mmHg or DBP > 105 mmHg

- Renal disease

- Anemia

- Hepatitis

- GI diseases (pancreatitis, inflammatory bowel disease)

- Recent or significant abdominal surgery

- Advanced pulmonary disease

- Chronic infections

- Weight loss > 10% in past 6 months

- Pregnancy and childbearing

- Major psychiatric disorders

- Excessive alcohol intake

- Thiazide use > 25 mg per day

- Non-selective beta blockers

- Niacin

- Systemic glucocorticoids

- Weight loss or weight gain medication

- Thyroid disease-suboptimally treated

- Active endocrine diseases (Cushing's, acromegaly)

- Plasma triglycerides over 400 mg/dl (despite treatment)

- History bladder cancer

- Hematuria

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Prevention


Intervention

Drug:
Pioglitazone


Locations

Country Name City State
United States Pennington Biomedical Research Center Baton Rouge Louisiana
United States SUNY Health Science Center Brooklyn New York
United States USC-Keck School of Medicine Los Angeles California
United States University of Tennessee Memphis Tennessee
United States Carl T. Hayden VA Medical Center Phoenix Arizona
United States Texas Diabetes Institute San Antonio Texas
United States University of California San Diego-San Diego VA Medical Center San Diego California
United States Georgetown University Washington District of Columbia

Sponsors (3)

Lead Sponsor Collaborator
The University of Texas Health Science Center at San Antonio Takeda Pharmaceuticals North America, Inc., University of Texas

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Prevention of Type 2 Diabetes No
Secondary Improvement in glycemic control No
Secondary Change in insulin secretion No
Secondary Change in insulin sensitivity No
Secondary Improvement in cardiovascular risk factors No
Secondary Change in blood pressure No
Secondary Change in atherosclerosis No
Secondary Occurrence of cardiovascular morbidity and mortality No
Secondary Change in body composition No
Secondary Change in adipocytokines No
Secondary Change in plasma sex steroids No
Secondary Change in renal function No
Secondary Adverse events No
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