AC Adenocarcinoma, SC Squamous cell carcinoma, SCLC Small cell lung cancer, *Random-effect model was used when P value of heterogeneity test (Ph)<0.10; otherwise, fixed-effect model was used.
Three genetic loci for lung cancer risk have been identified by genome-wide association studies (GWAS), but inherited susceptibility to specific histologic types of lung cancer is not well establishe
