The covariate-adjusted AUC showed a weak distinction between HNF1A–MODY and T2DM (AUC = 0.70; 95 % CI 0.51–0.88), and only a slightly better for GCK–MODY and T2DM (AUC = 0.77; 95 % CI 0.58–0.97). The gene discussed is GCK; the disease is type 2 diabetes mellitus.