CXCL9 and lung adenocarcinoma: Lung adenocarcinoma patients with high CXCL9 levels had an 80% reduced risk of death (HR = 0.20, 95% CI: 0.05–0.78, p = 0.021) relative to patients with low CXCL9 levels (Table 4), although K–M analysis did not reach statistical significance (log-rank test p = 0.082; Supplement Figure 1).