GSTP1 and Erythema: Our results show a level that is not statistically significant in the protection towards developing an erythema, i.e. lower odds (OR = 0.3; 95% CI, 0.08-1.08), in the presence of at least one allelic variant (mut/het i.e. aa/Aa) of XRCC1 Arg194Trp or of GSTP1 (Ile105Val).