GSTM1 and hydrops fetalis: Groups IV and III had significantly lower EF than group II (P < 0.001) (Table 1), and levels of total cholesterol, LDL-C, triglycerides ALT, AST, urea, and HbA1c were significantly higher in HF groups than in controls (P < 0.001), but lower in HDL-C and hemoglobin (Hb) (P < 0.001).