ARG1 and type 2 diabetes mellitus: Four variables hs-CRP (P< 0.0001), arginase-1 levels (P =0.0005), ARG1 rs278166-G/T polymorphism (P <0.0001), and ARG1 rs2781665-A/T polymorphism (P< 0.0001) were independently associated with T2DM.