In regard to PD-L1 rs2890658, a positive correlation between this variant and the risk of lung cancer (OR = 1.74, 95% CI = 1.37–2.19, p = 0.000, AC vs. AA; OR = 1.77, 95% CI = 1.41–2.23, p = 0.000, AC+CC vs. AA; OR = 1.72, 95% CI = 1.39–2.13, p = 0.000 C vs. A) was observed (Table 4). This evidence concerns the gene CD274 and lung cancer.