Genetic Studies of Insulin & Diabetes

Status Recruiting

Clinical Trial Summary

The study will allow researchers to obtain blood, plasma, DNA, and RNA for genetic studies of insulin. There will be a focus on the causes of insulin resistance and diabetes mellitus. Insulin is a hormone found in the body that controls the level of sugar in the blood. Insulin resistance refers to conditions like diabetes when insulin does not work properly. In this study researchers would like to compare patients with diabetes and other forms of insulin resistance to normal individuals. The study will investigate how insulin attaches to cells. Researchers will take 4 to 6 ounces (100-150 ml) of blood from adult patients and may request up to 12 ounces (one unit) of blood if necessary. Skin samples may be taken for a biopsy if further genetic testing is necessary. In addition some patients may be asked not to eat for up to 72 hours prior to testing.

Clinical Trial Description

Study Description: Insulin is the key hormone responsible for regulating the level of glucose in plasma. In several disease states (e.g., obesity, type 2 diabetes, and acromegaly), the target cells are resistant to insulin action. Insulin resistance leads to metabolic complications including diabetes, dyslipidemia, cardiovascular disease, non-alcoholic fatty liver disease, and reproductive dysfunction. The intramural research program of the NIDDK has a long history of studying patients with rare disorders of extreme insulin resistance. We use what is learned from these rare patients both to develop therapeutics for rare diseases, and to apply what is learned to understand more common forms of insulin resistance. Objectives: Primary Objectives: (1) To understand the pathophysiology of insulin resistance and its relationship to cardiovascular disease, (2) To study the molecular genetics underlying various causes of insulin resistance and diabetes mellitus, and (3) To understand the natural history of insulin resistance disorders, including their response to FDA approved therapies. Endpoints: Primary Endpoint: Genetic causes of insulin resistance Secondary Endpoints: Diabetes control (hemoglobin A1c) and complications (rates of micro- and macrovascular disease) ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00001987
Study type	Observational
Source	National Institutes of Health Clinical Center (CC)
Contact	Megan S Startzell, R.N.
Phone	(301) 402-6371
Email	megan.startzell@nih.gov
Status	Recruiting
Phase
Start date	February 1, 1976

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Genetic Studies of Insulin and Diabetes

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms