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Study of Recombinant Human Insulin-Like Growth Factor I in Patients With Severe Insulin Resistance

2014-07-23 21:56:51 | BioPortfolio

Summary

OBJECTIVES: I. Determine the efficacy and toxic effects of recombinant human insulin-like growth factor I (rhIGF-I) on carbohydrate tolerance, insulin action, insulin secretion, hyperandrogenism, and hyperlipidemia in patients with severe insulin resistance who have failed other therapies.

II. Determine the dose and time response of rhIGF-I on carbohydrate homeostasis and secondary abnormalities in this patient population.

III. Determine the effect of rhIGF-I on insulin clearance, the regulation of insulin-like growth factor binding protein 1, the regulation of sex hormone binding globulin, and hypothalamic pituitary gonadal axis in this patient population.

Description

PROTOCOL OUTLINE: This is an open label study. Patients receive the first dose of subcutaneous recombinant human insulin-like growth factor I (rhIGF-I) on day 7.

Patients receive rhIGF-I twice daily 15-30 minutes before breakfast and dinner, and are hospitalized for the first week of therapy. Patients return for an outpatient exam on day 19 of rhIGF-I therapy. Approximately 30 days into the therapy, patients are readmitted to the clinical center for repeat screening tests. Patients then receive maintenance therapy of rhIGF-I for up to 6-12 months. A washout period follows the maintenance therapy phase.

Patients are followed weekly, biweekly, or monthly depending on blood glucose response of patients off rhIGF-I therapy. Weekly phone contact with study coordinator is mandatory during this time.

Study Design

Masking: Open Label, Primary Purpose: Treatment

Conditions

Insulin Resistance

Intervention

insulin-like growth factor I

Location

Beth Israel Deaconess Medical Center
Boston
Massachusetts
United States
02215

Status

Recruiting

Source

FDA Office of Orphan Products Development

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-23T21:56:51-0400

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Medical and Biotech [MESH] Definitions

A well-characterized basic peptide believed to be secreted by the liver and to circulate in the blood. It has growth-regulating, insulin-like, and mitogenic activities. This growth factor has a major, but not absolute, dependence on GROWTH HORMONE. It is believed to be mainly active in adults in contrast to INSULIN-LIKE GROWTH FACTOR II, which is a major fetal growth factor.

A well-characterized neutral peptide believed to be secreted by the LIVER and to circulate in the BLOOD. It has growth-regulating, insulin-like and mitogenic activities. The growth factor has a major, but not absolute, dependence on SOMATOTROPIN. It is believed to be a major fetal growth factor in contrast to INSULIN-LIKE GROWTH FACTOR I, which is a major growth factor in adults.

A syndrome with excessively high INSULIN levels in the BLOOD. It may cause HYPOGLYCEMIA. Etiology of hyperinsulinism varies, including hypersecretion of a beta cell tumor (INSULINOMA); autoantibodies against insulin (INSULIN ANTIBODIES); defective insulin receptor (INSULIN RESISTANCE); or overuse of exogenous insulin or HYPOGLYCEMIC AGENTS.

Diminished effectiveness of INSULIN in lowering blood sugar levels: requiring the use of 200 units or more of insulin per day to prevent HYPERGLYCEMIA or KETOSIS. It can be caused by the presence of INSULIN ANTIBODIES or the abnormalities in insulin receptors (RECEPTOR, INSULIN) on target cell surfaces. It is often associated with OBESITY; DIABETIC KETOACIDOSIS; INFECTION; and certain rare conditions. (from Stedman, 25th ed)

One of the six homologous soluble proteins that bind insulin-like growth factors (SOMATOMEDINS) and modulate their mitogenic and metabolic actions at the cellular level.

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