We updated the design of this site on December 18, 2017. Learn more.
ClinicalTrials.gov Menu
IMPORTANT: Due to the lapse in government funding, the information on this web site may not be up to date, transactions submitted via the web site may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

Characterization of the Variability of Insulin Secretory Parameters in the Meal Tolerance and the Maximal Stimulation Tests of Subjects With Type 2 Diabetes Mellitus

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01663220
Recruitment Status : Completed
First Posted : August 13, 2012
Last Update Posted : August 14, 2013
Information provided by (Responsible Party):

Study Description
Brief Summary:
A multi-year clinical study to improve tools for measuring the function of insulin-producing beta cells in people with type 2 diabetes mellitus.

Condition or disease
Type 2 Diabetes

Detailed Description:
A three-year observational study to standardize the meal tolerance and maximum stimulational tests for measuring beta cell function in the clinical setting. It also aims to improve methods for the early prediction of the long-term response to an intervention and for identification of patients at risk for rapid beta cell function deterioration, thereby enabling future clinical studies that examine diabetes progression.

Study Design

Study Type : Observational
Estimated Enrollment : 20 participants
Observational Model: Case-Crossover
Time Perspective: Prospective
Official Title: Characterization of the Variability of Insulin Secretory Parameters in the Meal Tolerance and the Maximal Stimulation Tests of Subjects With Type 2 Diabetes Mellitus
Study Start Date : May 2012
Primary Completion Date : February 2013
Study Completion Date : February 2013

Resource links provided by the National Library of Medicine

Drug Information available for: Insulin
U.S. FDA Resources

Groups and Cohorts

obese individuals with type 2 diabetes mellitus

Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   30 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
obese individuals with type 2 diabetes mellitus

Inclusion Criteria:

  1. Ability to give informed consent and comply with all study requirements
  2. Overweight and obese men and women. Healthy is defined as no clinically relevant abnormalities identified by a detailed medical history (with the exception of glucose, see below), full physical examination, including blood pressure and pulse rate measurement, 12 lead ECG and clinical laboratory tests.
  3. T2D diagnosis by ADA criteria 2011
  4. Glucose Parameters:

    1. Fasting glucose 126-270 mg/dL
    2. HbA1c 7.0%--10.0%
  5. Diabetes medications allowed: metformin only: stable dose (8 weeks or longer) and 500-2000 mg/day ;
  6. Estimated creatinine clearance, by Cockcroft-Gault, >60 cc/min
  7. No washout of medications allowed
  8. Women of child-bearing potential are allowed (but must agree to use non-hormonal contraception and not plan to become pregnant for the duration of the study). Must agree to maintain the same contraceptive measures throughout the study. Acceptable contraceptive methods for female subjects of childbearing potential include one of the following:

    • Abstinence.
    • One (1) of the following methods:

      • Tubal ligation
      • Copper-containing intrauterine device (IUD)
      • Condom AND spermicidal foam/gel/film/cream/suppository
      • Male partner who has had a vasectomy for at least 6 months.
  9. It is required that all male subjects use an acceptable method of contraception (as outlined below), starting from the first dose of study medication and continuing for at least 28 days after the last dose of study drug:

    1. Abstinence
    2. A condom AND one of the following:

      • Vasectomy for more than 6 months.
      • Female partner who meets one of the following conditions:

        • Has had a tubal ligation, hysterectomy, or bilateral oophorectomy; or
        • Is post menopausal (menopause is defined as over the age of 60 years, or between 45 and 60 years being amenorrheic for at least 2 years with plasma (FSH) level > 30 UI/L) or
        • Or for female partners of the male participants, in addition to hysterectomy, oophorectorectomy, or post-menopausal status, that the use of a spermicidal gel or foam will constitute adequate protection in conjunction with use of a condom by the male.
  10. BMI 27-40; stable weight (less than 3% change in past 3 months)
  11. Age Range: 30-65
  12. Other conditions may be allowed, if medically stable and controlled for at least four weeks within clinically acceptable limits, including: hypertension, dyslipidemia, osteoarthritis, osteoporosis
  13. Smokers allowed, but must be able to participate on inpatient stay and not smoke

Exclusion Criteria:

Subjects presenting with any of the following will not be included in the study:

  1. Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, neoplastic, or allergic or clinical findings at Screening (seasonal allergies allowed).
  2. Any condition possibly affecting absorption (eg, gastrectomy, malabsorption syndromes, abdominal surgery other than appendectomy, cholecystectomy or hysterectomy).
  3. Use of unacceptable medications (see Appendix A)
  4. A positive urine drug screen.
  5. History of regular alcohol consumption exceeding 7 drinks/week for females or 14 drinks/week for men (1 drink = 5 ounces (150 mL) of wine or 12 ounces (360 mL) of beer or 1.5 ounces (45 mL) of hard liquor) within 6 months of Screening.
  6. Treatment with an investigational drug within 30 days or 5 half-lives preceding the first dose of study medication.
  7. 12 lead ECG demonstrating QTc >450 msec at Screening for males, 470 msec for females. If QTc exceeds 450/470 msec, the ECG should be repeated two more times and the average of the three QTc values should be used to determine the subject's eligibility. An ECG with evidence for possible old myocardial infarction will need to have prior ECGs to document stability of finding.
  8. Supine blood pressure >=140 mm Hg (systolic) or 90 mm Hg (diastolic), on a single measurement. If elevated, confirm by a single repeat, following at least 10 minutes of rest.
  9. Screening serum alanine transaminase (ALT) or serum aspartate transaminase (AST) greater than 2X the upper limit of the laboratory reference range.
  10. Elevated fasting triglycerides at screening (>500 mg/dL), confirmed by a single repeat if deemed necessary.
  11. Pregnant or nursing females; inability to use effective contraception.
  12. Blood donation of approximately 1 pint (500 mL) within 56 days prior to dosing.
  13. Participation in a clinical biomedical research study within prior two months may be excluded, depending on study type and details.
  14. History of sensitivity to heparin or heparin-induced thrombocytopenia, if utilized by the site for blood draws.
  15. Unwilling or unable to comply with directions and procedures described in this protocol.
  16. Subject is the Investigator or a sub-Investigator, research assistant, pharmacist, study coordinator, other staff, or a relative of study personnel directly involved with the conduct of the study.
  17. Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study.
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01663220

United States, Texas
ICON Development Solutions, Gault Lane
San Antonio, Texas, United States, 78209
Sponsors and Collaborators
Foundation for the National Institutes of Health
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Juvenile Diabetes Research Foundation
Amylin Pharmaceuticals, LLC.
Merck Sharp & Dohme Corp.
Eli Lilly and Company
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Principal Investigator: George Atiee, MD ICON Development Solutions
More Information

Responsible Party: Foundation for the National Institutes of Health
ClinicalTrials.gov Identifier: NCT01663220     History of Changes
Other Study ID Numbers: Beta Cell - Protocol 1d
First Posted: August 13, 2012    Key Record Dates
Last Update Posted: August 14, 2013
Last Verified: August 2013

Keywords provided by Foundation for the National Institutes of Health:
type 2 diabetes
beta cell function
meal tolerance test
maximum stimulation test
method standardization
insulin secretion
insulin sensitivity

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 2
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Insulin, Globin Zinc
Hypoglycemic Agents
Physiological Effects of Drugs