Fig. 3

Prognostic analysis of the 6-gene signature model in the TCGA cohort. A Kaplan-Meier curves for the OS of patients in the high-risk group and low-risk group. P = 1.78e−09. B AUC of time-dependent ROC curves in the TCGA cohort. AUC at 3 years = 0.680, AUC at 5 years = 0.667, AUC at 7 years = 0.663. C The dotted line indicates the individual inflection point of the risk score curve, by which the patients are categorized into low-risk (green) and high-risk (red) groups. D Red dots indicate the dead patients and green dots indicate the alive. With the increase of risk score, more patients died. E Univariate Cox regression analysis. Forest plot of associations between risk factors and the survival of NSCLC. F Multiple Cox regression analysis. The ferroptosis-related gene signature is an independent predictor of NSCLC