HNF1B and type 1 diabetes mellitus: In both groups, 15 subjects (31%: 4 subjects with T1D, 1 with T2D, 5 with pancreatogenic diabetes, 1 with MODY-HNF1B and 4 undetermined in the PERT group; 10 subjects with T1D, 2 with T2D, 1 with post-transplantation diabetes and 2 undetermined in the control group) presented with relevant hypoglycemia.