TNF and skin basal cell carcinoma: Our results revealed that the gene expression levels could significantly differentiate between BCC groups (area under the curve (AUC) = 1, p = 0.021, for the ATM, P65, PINK1 and TNF-α genes, with 100% specificity and 100% sensitivity, and AUC = 0.938, p = 0.043, with 100% sensitivity and 75% specificity, for FOXO3a) (Figure 5).