SLC2A2 rs5400 was not associated with plasma ascorbic acid concentration (p = 0.54) or the risk of islet autoimmunity, IAA first or GADA first; however, SLC2A2 rs5400 was associated with increased risk of type 1 diabetes (OR 1.66 [95% CI 1.06, 2.60], p = 0.028) (Table 3). This evidence concerns the gene SLC2A2 and type 1 diabetes mellitus.