GSTM1 and diabetes mellitus: In a stepwise multiple regression, tinzaparin, male gender, BMI, SBP, HD time, TIBC, sodium, phosphate, and uric acid were significantly related to serum TG levels; tinzaparin, male, diabetes, HD time, albumin, Hb, and TIBC to serum TC levels; male gender, lipid-lowering agent, AK, albumin, AST, and iron to serum LDL levels; and age, DM, BMI, kt/V, albumin, ferritin, and iPTH to serum HDL levels.