While Val762Ala polymorphism was associated with reduced susceptibility to DR, the Arg399Gln polymorphism contributed an elevated to risk for DR in South-Indian T2DM individuals.
No significant difference was observed in the genotype and allele distribution of eNOS -786T > C, intron 4a4b, p22phox 242C > T and XRCC1 Arg399Gln polymorphisms between T2DM groups with and without DN.