In our previous work on the HNF1A gene, although we did not find an association between T1D, we found that an HNF1A SNP is associated with clinical characteristics of T1D, such as Hemoglobin A1C (HbA1c) levels and Insulin-dose adjusted glycated hemoglobin A1c (IDAA1c) [20]. This evidence concerns the gene HNF1A and type 1 diabetes mellitus.