Figure 4. Construction of the FRG-based survival model for prognostic prediction of LUAD. (A) Univariate Cox regression analysis showing the hazard ratios (HRs) with 95% confidence intervals (CIs) and p values for 14 FRGs. (B) Kaplan–Meier survival curves showing the overall survival of high- and low-risk LUAD patients divided according to the risk score calculated using the new survival model based on the expression of 5 FRGs. (C) ROC curve analysis showing the prognostic prediction efficiency of the new survival model. (D) Kaplan–Meier survival curves analysis of the GSE30219 cohort.