There are two common polymorphisms of the PON2 gene, PON2-148 [C/G: Ala (A)/Gly (G)] and PON2-311 [C/G: Cys (C)/Ser (S)], and the PON2-148 "G" (G variant) is associated with higher fasting blood glucose in NIDDM patients [22]. Here, PON2 is linked to type 2 diabetes mellitus.