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Roux-en-Y (RYGB) gastric bypass reduces the size and capacity of the stomach and bypasses a portion of the small intestine which leads to decreased food intake and higher levels of a gut hormone called GLP-1 (glucagon-like-peptide-1). These changes lead to weight loss, improved blood sugars and often remission of type 2 diabetes but most patients do not qualify or want surgery. The investigators are searching for ways to make the beneficial effects of RYGB available to most type 2 diabetes patients rather than a select few that undergo RYGB.
The investigators believe that parts of RYGB can be medically reproduced through a combination of diet and medicine. Once weekly injectable GLP-1 medicine that leads to weight loss and improved blood sugar control in type 2 diabetes are now FDA approved. Optifast is a medically supervised diet that safely reduces calorie intake to 800 calories per day for three months by replacing normal meals with specially prepared bars and shakes which leads to weight loss and improved blood sugar control in type 2 diabetes. Normal meals are then gradually reintroduced over 6 weeks and the bars/shakes are stopped. The investigators hypothesize that Optifast (diet) + once weekly GLP-1 will lead to weight loss and improvement in blood sugar control in type 2 diabetes similar to what is seen after RYGB.
Full description
MRB II is a two arm 50-week study that will recruit Veteran DM2 patients already on a stable dose of a GLP-1 agonist +/- DM2 agents. The investigators will recruit 50 patients and assign 25 subjects to the control arm and 25 subjects to the experimental arm. The control and experimental arm (n=25) will have in-person visits with the study PI, certified diabetes educator (CDE) and behavioral psychologist (Psych) at baseline, week 12, week 24 and week 48 to optimize glycemic control. Visits with the PI will be one-on-one but visits with CDE/Psych will be shared-medical appointments. Furthermore, the experimental arm (n=25) will also be enrolled in the Optifast medical weight loss program starting with a 2-week run-in phase to determine if they are able to tolerate Isocaloric Optifast (7 meal replacements/day) while also minimizing significant weight loss prior to the start of the study. The patients in the experimental arm successfully completing the run-in phase will then continue and enter the 50-week study.
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50 participants in 2 patient groups
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Central trial contact
Sandra Garcia Juarez, BS
Data sourced from clinicaltrials.gov
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