DPP4 and type 2 diabetes mellitus: However, we found that the rs17574 DPP4 polymorphism was associated with protection for pCAD in T2DM patients (pCAD + T2DM) under additive (OR = 0.68, p = 0.007), dominant (OR = 0.61, p = 0.003), heterozygote (OR = 0.61, p = 0.003), and co-dominant 1 (OR = 0.60, p = 0.003) models (Figure 3); all of them were appropriate inheritance models according to the Hosmer–Lemeshow criteria.