GSTM1 and lung cancer: The lung cancer group had higher age (57.00 (52.25–65.75), p < 0.001), higher SBP (126.50 (117.00–136.50), p = 0.014), higher CEA (2.70 (1.35–4.88), p < 0.001), lower UA (327.00 (276.25–383.25), p < 0.001) and lower Hb (128.00 (113.50–133.00), p < 0.001) compared to control group.