The metrics from DNA damage and repair study were correlated with the genotypes of common polymorphisms of the hOGG1 and RAD51 genes : a G -- > C transversion at 1245 position of the hOGG1 gene producing a Ser -- > Cys substitution at the codon 326 ( the Ser326Cys polymorphism ) and a G -- > C substitution at position 135 ( 5'-untranslated region ) of the RAD51 gene ( the G135C polymorphism ) .
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