DPP4 and diabetes mellitus: Incretin-based therapies, including glucagon-like peptide 1 receptor agonists (GLP-1 RAs) and dipeptidyl peptidase-4 (DPP-4) inhibitors, are essential treatments in diabetes management due to their efficacy in glycemic control and the additional benefits of GLP-1 RAs, which include cardiovascular and renal protection.