Mazdutide (IBI-362; LY-3305677) TFA is a long-acting synthetic oxyntomodulin analog. Mazdutide is also a co-agonist of glucagon-like peptide (GLP-1R) and glucagon receptor (GCGR). Mazdutide TFA binds human and mouse GCGR (K_i: 17.7 nM and 15.9 nM, respectively) and GLP-1R (K_i: 28.6 nM and 25.1 nM, respectively) and stimulates insulin secretion from mouse islets (EC₅₀: 5.2 nM). Mazdutide TFA is used in studies of obesity and type 2 diabetes (T2D)^[1][2][3].