Fig. 1.

Selected associations between NBS1 SNPs and smoking-related cancer sites, stratified by smoking status. Grey boxes represent association between SNP and cancer site, white boxes represent findings for never-smokers and black boxes represent findings for ever-smokers. *LA study: lung cancer adjusted for gender, smoking, education, race and age; UADT cancers additionally adjusted for alcohol drinking; MSKCC study: bladder cancer adjusted for gender, smoking, race, education and age. Taixing study: esophageal cancer adjusted for gender, smoking, age, alcohol drinking and education; stomach and liver cancers additionally adjusted for helicobacter pylori infection and HBsAg status, respectively.