GSTM1 and gestational diabetes: The associations between rs2074192 and GDM risk was even more pronounced in subjects of age ≤ 30.04 years, pre-BMI ≤ 22.3 kg/m2, SBP ≤ 110.2 mmHg, Hb ≤ 5.15mg/dl, TG > 2.55 mmol/L, HDL-c ≤ 1.66 mmol/L, and LDL-c > 3.41 mmol/L subgroups, and significant interaction effects were detected between rs2074192 and HDL-c and LDL-c.