DDAH2 and type 2 diabetes mellitus: While GWAS data available for the general population [PhenoScanner database http://www.phenoscanner.medschl.cam.ac.uk/], suggested that the variant rs9267551 C was associated with lower risk of CAD (OR = 0.95, 95% CI 1.028–1.085; p = 3.88 × 10−8 [24]), to the best of our knowledge, this is the first study showing a role of the rs9267551 polymorphism in the DDAH2 gene on MI in patients with T2DM.