Significantly increased lung adenocarcinoma (AC) risk was also considered as “highly credible” or “positive” in Asians for the GSTM1 (OR = 1.35, 95% CI = 1.22–1.48, I2 = 25.5%, statistical power = 0.988, FPRP < 0.001, BFDP < 0.001, and Venice criteria: ABB) and GSTT1 (OR = 1.36, 95% CI = 1.17–1.58, I2 = 30.2%, statistical power = 0.900, FPRP = 0.061, BFDP = 0.727, and Venice criteria: ABB) null genotype. This evidence concerns the gene GSTM1 and lung adenocarcinoma.