Effect on Weight Loss of Exenatide Versus Placebo

Effect on Weight Loss of Exenatide Versus Placebo in Subjects With Type 2 Diabetes Participating in a Lifestyle Modification Program

This trial is designed to compare the effects of twice-daily exenatide and twice-daily placebo on weight loss. This trial will evaluate overweight and obese subjects with type 2 diabetes who have inadequate glycemic control with metformin, sulfonylurea, or metformin plus a sulfonylurea. Subjects will be treated with exenatide or placebo in addition to their current oral antidiabetes agent regimen and participate in a lifestyle modification program.

Inclusion Criteria:

• Diagnosed with type 2 diabetes for at least 6 months
• Have been treated with a stable dose of the following for at least 6 weeks prior to screening: *immediate or extended release metformin, or *a sulfonylurea, or *a fixed-dose sulfonylurea/metformin combination therapy
• Have an HbA1c of 6.6% to 10.0%, inclusive
• Have a Body Mass Index (BMI) of 25 kg/m^2 to 39.9 kg/m^2, inclusive

Exclusion Criteria:

• Are treated with any of the following excluded medications: *exogenous insulin, thiazolidinedione, or alpha-glucosidase inhibitor for more than 1 week within 6 weeks of screening; *Symlin injection at any time; * Byetta injection within 3 months of screening or discontinuation of therapy at any time due to adverse reaction; *drugs that directly affect gastrointestinal motility; *use of a weight loss drug (including those available over the counter) within 3 months of screening; *chronic (lasting longer than 2 weeks) systemic corticosteroids (excluding topical, intranasal, and inhaled preparations) by oral, intravenous, or intramuscular route within 2 months of screening
• Have conditions contraindicating metformin and/or sulfonylurea use
• Have had a change in lipid-lowering agents within 6 weeks of screening
• Have received glucagon-like peptide-1 (GLP-1) analogs, or dipeptidyl peptidase-IV inhibitors (DPP-IV inhibitors) or have previously participated in this study
• Have received treatment within the last 30 days with a drug that has not received regulatory approval for any indication at the time of study entry