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Weight Loss Study for Patients With Obesity Due to Craniopharyngioma or Other Brain Tumor

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. Identifier: NCT01484873
Recruitment Status : Completed
First Posted : December 2, 2011
Results First Posted : August 11, 2016
Last Update Posted : March 3, 2017
Information provided by (Responsible Party):
Ashley Shoemaker, Vanderbilt University Medical Center

Brief Summary:
The purpose of this study is to determine whether exenatide can cause weight loss in patients with a history of craniopharyngioma or other brain lesion.

Condition or disease Intervention/treatment Phase
Obesity Overweight Craniopharyngioma Drug: Exenatide Phase 2

Detailed Description:

Hypothalamic obesity occurs in up to 60% of patients with tumors in the hypothalamic region, most commonly craniopharyngiomas. Hypothalamic dysfunction can be due to tumor infiltration and as a consequence of surgery or radiation therapy. Survivors who develop obesity have greater morbidity and mortality than normal weight survivors. Prevention and treatment of obesity in this population is vital in order to decrease the morbidity and mortality from diabetes, stroke and myocardial infarction.

Exenatide (Byetta®) is a GLP-1 homologue that was FDA approved for treatment of type 2 diabetes in 2005. It also decreases the rate of gastric emptying and increases satiety and has been shown to cause weight loss in some people. Exenatide may improve insulin sensitivity and satiety in patients with hypothalamic obesity but without the risks of bariatric surgery. The investigators hypothesize that treatment with exenatide will lead to weight loss in patients with hypothalamic obesity.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 10 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Effects of Exenatide on Body Weight in Patients With Hypothalamic Obesity
Study Start Date : June 2012
Actual Primary Completion Date : March 2015
Actual Study Completion Date : March 2015

Arm Intervention/treatment
Experimental: Exenatide
All patients received exenatide 10mcg BID x 50 weeks
Drug: Exenatide
Treatment with exenatide 5 mcg twice daily for 4 weeks, then 10 mcg twice daily for 46 weeks.
Other Name: Byetta

Primary Outcome Measures :
  1. Body Weight (kg) [ Time Frame: baseline, 50 weeks ]
    Change in body weight from baseline to end of study

Secondary Outcome Measures :
  1. Resting Energy Expenditure (Kcals Per Day) [ Time Frame: baseline, 50 weeks ]
    Change in resting energy expenditure from baseline to 50 weeks

  2. Visual Analogue Scales for Post-meal Satiety [ Time Frame: baseline, 50 weeks ]
    Change in visual analogue scales scores from baseline to 50 weeks. Higher score indicates greater satiety (minimum 0, maximum 100).

  3. Insulin Secretion (Area Under the Curve) [ Time Frame: baseline, 50 weeks ]
    Change in insulin secretion from baseline

  4. Gastric Emptying Rate (13C-octanoic Acid Isotope Excretion Half Life) [ Time Frame: baseline, 50 weeks ]
    Change in the isotope excretion half life during a gastric emptying test at baseline and at 50 weeks

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Age 18 to 40 years old
  • History of craniopharyngioma or other lesion in the hypothalamic region
  • Greater than 6 months post-treatment, including chemotherapy, surgery or radiation
  • BMI >30 mg/m2
  • Females must be post-menopausal, surgically sterile or using effective birth control for at least 12 weeks

Exclusion Criteria:

  • HgbA1C >7%
  • Use of diabetes medications other than metformin in the past 12 weeks, including exenatide
  • Use of weight loss drugs or initiation of a weight loss program in past 3 months
  • Impaired renal function or history of kidney transplant
  • History of gall stones (unless s/p cholecystectomy), pancreatitis or alcoholism
  • Personal or family history of medullary carcinoma of the thyroid or MEN type 2
  • History of gastroparesis or other gastric motility problems as exenatide decreases gastric motility
  • History of allergic reaction to exenatide or other medication components
  • Other significant comorbidities other than pituitary deficiencies
  • Currently prescribed warfarin (exenatide may alter warfarin metabolism)
  • Pregnant or lactating females
  • History of severe hypoglycemia (BG <60 and requiring assistance from another person)

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 identifier (NCT number): NCT01484873

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United States, Tennessee
Vanderbilt University
Nashville, Tennessee, United States, 37232
Sponsors and Collaborators
Vanderbilt University Medical Center
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Principal Investigator: Ashley Shoemaker, M.D. Vanderbilt University
Additional Information:
Publications of Results:
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Responsible Party: Ashley Shoemaker, Assistant Professor of Pediatrics, Vanderbilt University Medical Center Identifier: NCT01484873    
Other Study ID Numbers: 111185
First Posted: December 2, 2011    Key Record Dates
Results First Posted: August 11, 2016
Last Update Posted: March 3, 2017
Last Verified: January 2017
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Keywords provided by Ashley Shoemaker, Vanderbilt University Medical Center:
Hypothalamic Obesity
Additional relevant MeSH terms:
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Nutrition Disorders
Body Weight
Neuroectodermal Tumors
Neoplasms, Germ Cell and Embryonal
Neoplasms by Histologic Type
Neoplasms, Nerve Tissue
Bone Neoplasms
Neoplasms by Site
Bone Diseases
Musculoskeletal Diseases
Hypoglycemic Agents
Physiological Effects of Drugs
Anti-Obesity Agents
Hormones, Hormone Substitutes, and Hormone Antagonists