(A) Distribution diagram of risk score of NSCLC tumor samples in the validation set (GSE30219). (B) Risk map of tumor samples in the validation set. The X-axis represents the risk score; the Y-axis represents the survival time. (C) Survivorship curve of high- and the low-risk score groups for tumor samples in the validation set. (D) Prognosis prediction ROC curve of patients with NSCLC in the validation set. (E and F) PCA diagram and t-SNE diagram show the risk score groups of the tumor samples in the validation set.