ERCC5 and lung cancer: The XPG codon 1104 Asp/Asp is linked with decreased risk for lung cancer (OR = 0.54, 95% CI 0.37–0.8). Among the lung cancer cases, genotype His/Asp was more frequent than in the controls, while genotype Asp/Asp was lower. The XPG codon 1104 Asp/Asp genotype was associated with a significantly decreased risk of lung cancer (adjusted OR = 0.54, 95% CI 0.37–0.80), compared to the combined His/ His and His/Asp genotype as reference group