GSTM1 and hepatitis C virus infection: Patients with high BLLs demonstrated a significant trend for a higher percentage of patients of the male sex (p = .09); significantly higher instances of hepatitis C infection (HCV; p < .001), CTS (p < .001), and receiving hemodiafiltration (p < .001); a lower percentage of DM (p < .001) and residual daily urine of >100 mL (p = .035); a higher hemodialysis duration (p < .001), Kt/Vurea (Daugirdas; p < .001), and hemoglobin (Hb) and iPTH levels; and lower erythropoietin dosages (p < .001) and serum albumin and serum ferritin levels (p = .001; Table 2).