We selected serum concentrations of ferritin and hepcidin and value of hepcidin/ferritin as dependent variables and considered gender, age, BMI, FBG, TG, CHOL, HDL, LDL, ALT, AST, absence or presence of CP, absence or presence of T2DM, and duration of T2DM as independent variables (X1–X13, Table 3). Here, HAMP is linked to type 2 diabetes mellitus.