FGL2 and lung adenocarcinoma: In the Kaplan–Meier plotter database, high FGL2 mRNA expression was correlated with better overall survival and progression-free survival in lung adenocarcinoma patients (OS HR = 0.64, 95% CI = 0.50 to 0.81, log-rank P = 0.00027; FP HR = 0.57, 95% CI = 0.41 to 0.79, log-rank P = 0.00061) (Figs. 2C–2D).