We did not validate the results of the PTPRD variations (rs17584499 and rs649891) reported in the published GWASs for T2D, but we observed that PTPRD rs10511544 A>C, rs10756026 T>A and rs10809070 C>G were significantly associated with a decreased risk of GDM using the additive model [adjusted OR (95% CI) = 0.83 (0.72-0.97) for rs10511544; adjusted OR (95% CI) = 0.81 (0.70-0.94) for rs10756026; adjusted OR (95% CI) = 0.78 (0.65-0.92) for rs10809070] (Table 2–3). This evidence concerns the gene PTPRD and gestational diabetes.