XPC and lung cancer: Females carrying XPC 939Gln/Gln vs. XPC 939Lys/Gln. 939Gln/Gln had significantly increased risk of lung cancer as well as other females and males with several combination of polymorphisms in XPC, XPD (Lys751Gln), hOGG1 (Ser326Cys) and XRCC1 (Arg399Gln)