Summary of DURATION development program select efficacy results: absolute difference in change in A1C, body weight, systolic blood pressure, and LDL cholesterol between exenatide once weekly and comparators. Summary of DURATION development program select efficacy results: absolute difference in change in A1C, body weight, systolic blood pressure, and LDL cholesterol between exenatide once weekly and comparators. Susan LaRue et al. Diabetes Spectr 2013;26:46-52 ©2013 by American Diabetes Association