Rosenstock, Julio, et al. – Long term studies needed to confirm potential of glycemic control. >Summary: The purpose of this research was to review recent clinical trials of oral dipeptidyl peptidase-4 inhibitors and examine their role in managing type 2 diabetes mellitus. Outcomes: Oral dipeptidyl peptidase-4 inhibitors may prove valuable in the treatment of diabetes, given their effectiveness in reducing glycated hemoglobin with neutral weight effects and without the adverse events associated with other agents. Dipeptidyl peptidase-4 inhibitors appear to improve islet function and may modify the course of diabetes; this, however, must be confirmed with long-term controlled studies to demonstrate sustained glycemic control that translates into [beta]-cell preservation