Furthermore, high PD-L1 was significantly correlated with higher tumor stage (OR = 3.9, 95% CI = 2.71-5.61, <i>p</i> < 0.001) and distant metastasis (OR = 2.5, 95% CI = 1.22-5.1, <i>p</i> = 0.012), while PD-L1 overexpression was not correlated with sex, tumor grade, lymph node status, and multifocality. Here, CD274 is linked to neoplasm.