When we used the median expression levels of the NER proteins in the controls as cutoff values, we found that a significantly increased risk of SCCHN was associated with low expression of XPA [odds ratio (OR), 2.99; 95% confidence interval (CI), 1.22-7.47], XPC (OR, 2.46; 95% CI, 1.04-5.87), XPD (OR, 3.02; 95% CI, 1.18-7.76), and XPF (OR, 5.29; 95% CI, 2.01-13.9), but not ERCC1 and XPG, after adjustment for age, sex, ethnicity, smoking, alcohol use, and sample storage time.
C0037369
Smoking