Weight Loss Study for Patients With Obesity Due to Craniopharyngioma or Other Brain Tumor
|Study Design:||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|
- Body Weight (kg) [ Time Frame: baseline, 50 weeks ]Change in body weight from baseline to end of study
- Resting Energy Expenditure (Kcals Per Day) [ Time Frame: baseline, 50 weeks ]Change in resting energy expenditure from baseline to 50 weeks
- 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).
- Insulin Secretion (Area Under the Curve) [ Time Frame: baseline, 50 weeks ]Change in insulin secretion from baseline
- 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
|Study Start Date:||June 2012|
|Study Completion Date:||March 2015|
|Primary Completion Date:||March 2015 (Final data collection date for primary outcome measure)|
All patients received exenatide 10mcg BID x 50 weeks
Treatment with exenatide 5 mcg twice daily for 4 weeks, then 10 mcg twice daily for 46 weeks.
Other Name: Byetta
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.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01484873
|United States, Tennessee|
|Nashville, Tennessee, United States, 37232|
|Principal Investigator:||Ashley Shoemaker, M.D.||Vanderbilt University|