STING1 and metastatic malignant neoplasm in the lymph nodes: Multivariate analysis further demonstrated that tumor depth (HR = 1.815, 95% CI: 1.181–2.789, P = 0.007), lymph node metastasis (HR = 2.203, 95% CI: 1.543–3.146, P < 0.001), and STING expression (HR = 0.636, 95% CI: 0.408–0.991, P = 0.045) remained as the independent prognostic factors for OS of LUAD patients among the variables examined (Supplementary Table S8).