Objective To explore the relationship between xeroderma pigmentosum group D( ERCC2/XPD),Bcl-2 associated athanogene 1( BAG-1) and DNA repair gene RAD51 polymorphism and clinicopathological characteristics of non-small cell lung cancer( NSCLC). Methods A casecontrol study with 100 NSCLC cases and 80 controls matched by age and sex was conducted,the polymerase chain reaction-restriction fragment length polymorphism( PCR-RFLP) was analyzed. Logistic regression model was made to calculate the odd ratios( ORs) a...