CYBA and diabetes mellitus: An association study of C936T polymorphism of the VEGF gene and the C242T polymorphism of the p22phox gene with T2D and DPN in a population of Caucasian ethnicity was studied by Ghisleni et al. According to their results, the C936T polymorphism of the VEGF gene and C242T polymorphism of the p22phox gene did not correlate with the risk of developing diabetes mellitus or neuropathic signs and symptoms.