NCT00001987|RecruitingFDA Device
Genetic Studies of Insulin and Diabetes
Natural History of Disorders of Insulin Resistance
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Natural History of Disorders of Insulin Resistance
Sponsor study identifier
Secondary identifiers
observational
1,200
1 country
1
Study Start
February 1, 1976
Actual (reported)Primary Completion
Not reported
Date not reportedStudy Completion
Not reported
Date not reportedThe 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....
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
Not reported
Date not reportedClick on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
February 1, 1976
Actual (reported)January 28, 2000
Actual (reported)January 31, 2000
Actual (reported)Diabetes control
To help prevent additional health issues associated with poor glucose and insulin levels.
every 6-12 months
Genetics of insulin resistance
To discover the cause of the insulin resistance to better assist with treatment for it.
End of Study
Pathophysiology of insulin resistance and its relationship to cardiovascular disease.
To understand the pathophysiology of insulin resistance and its relationship to cardiovascular disease.
End of study
Obtain tissue samples for ex vivo studies.
To understand physiology and pathophysiology of insulin resistance and develop possible treatments.
End of study
Healthy Volunteers
patients with severe insulin resistance manifesting with acanthosis nigricans, hyperinsulinemia, type A and B insulin resistance syndromes, and patients with lipodystrophy.
HR-pQCT is a non-invasive, low-dose three-dimensional imaging method used to evaluate volumetric bone mineral density and bone microarchitecture of peripheral skeletal sites, including distal radius and distal tibia. HR-pQCT has an ability to differentiate between cortical and trabecular bone compartments providing density and structure parameters.
Subjects with severe insulin resistance disorders.
National Institutes of Health Clinical Center
Bethesda, Maryland, 20892, United States
Okawa MC, Tuska RM, Lightbourne M, Abel BS, Walter M, Dai Y, Cochran E, Brown RJ. Insulin Signaling Through the Insulin Receptor Increases Linear Growth Through Effects on Bone and the GH-IGF-1 Axis. J Clin Endocrinol Metab. 2023 Dec 21;109(1):e96-e106. doi: 10.1210/clinem/dgad491.
Walzer D, Turcu AF, Jha S, Abel BS, Auchus RJ, Merke DP, Brown RJ. Excess 11-Oxygenated Androgens in Women With Severe Insulin Resistance Are Mediated by Adrenal Insulin Receptor Signaling. J Clin Endocrinol Metab. 2022 Aug 18;107(9):2626-2635. doi: 10.1210/clinem/dgac365.
Rebecca J Brown, M.D.
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
First Submitted
January 28, 2000
First Posted
January 31, 2000
Study Start
February 1, 1976
Actual (reported)Last Updated
October 29, 2026
Record last verified: 2026-10-02
Screening Adolescents for Type 2 Diabetes Mellitus in a Community Clinic
Contact the study team to confirm eligibility.
Okawa MC, Cochran E, Lightbourne M, Brown RJ. Long-Term Effects of Metreleptin in Rabson-Mendenhall Syndrome on Glycemia, Growth, and Kidney Function. J Clin Endocrinol Metab. 2022 Feb 17;107(3):e1032-e1046. doi: 10.1210/clinem/dgab782.
Meral R, Malandrino N, Walter M, Neidert AH, Muniyappa R, Oral EA, Brown RJ. Endogenous Leptin Concentrations Poorly Predict Metreleptin Response in Patients With Partial Lipodystrophy. J Clin Endocrinol Metab. 2022 Mar 24;107(4):e1739-e1751. doi: 10.1210/clinem/dgab760.
Nguyen ML, Sachdev V, Burklow TR, Li W, Startzell M, Auh S, Brown RJ. Leptin Attenuates Cardiac Hypertrophy in Patients With Generalized Lipodystrophy. J Clin Endocrinol Metab. 2021 Oct 21;106(11):e4327-e4339. doi: 10.1210/clinem/dgab499.
Sekizkardes H, Chung ST, Chacko S, Haymond MW, Startzell M, Walter M, Walter PJ, Lightbourne M, Brown RJ. Free fatty acid processing diverges in human pathologic insulin resistance conditions. J Clin Invest. 2020 Jul 1;130(7):3592-3602. doi: 10.1172/JCI135431.
Klubo-Gwiezdzinska J, Lange M, Cochran E, Semple RK, Gewert C, Brown RJ, Gorden P. Combined Immunosuppressive Therapy Induces Remission in Patients With Severe Type B Insulin Resistance: A Prospective Cohort Study. Diabetes Care. 2018 Nov;41(11):2353-2360. doi: 10.2337/dc18-0884. Epub 2018 Sep 10.
Brown RJ, Joseph J, Cochran E, Gewert C, Semple R, Gorden P. Type B Insulin Resistance Masquerading as Ovarian Hyperthecosis. J Clin Endocrinol Metab. 2017 Jun 1;102(6):1789-1791. doi: 10.1210/jc.2016-3674.
Kassai A, Muniyappa R, Levenson AE, Walter MF, Abel BS, Ring M, Taylor SI, Biddinger SB, Skarulis MC, Gorden P, Brown RJ. Effect of Leptin Administration on Circulating Apolipoprotein CIII levels in Patients With Lipodystrophy. J Clin Endocrinol Metab. 2016 Apr;101(4):1790-7. doi: 10.1210/jc.2015-3891. Epub 2016 Feb 22.
Subject level data will be shared upon request after appropriate collaboration agreements are in place.
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Source: ClinicalTrials.gov.
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