Figure 2. Evaluation and validation of the DRLs signature in the training, testing, and TCGA cohorts. (A) Distribution of normalized DRLs risk scores. (B) Survival status and survival time in relation to DRLs risk scores. (C) Heatmaps showing high- and low-risk groups. Kaplan-Meier analyses of OS (D) and PFS (E) for high- and low-risk groups. (F) PCA analysis of all genes. (G) PCA analysis of DRGs. (H) PCA analysis of all DRLs. (I) PCA analysis of DRLs risk score. Abbreviations: DRLs: disulfidptosis-related lncRNAs; OS: overall survival; PFS: progression-free survival; PCA: principal component analysis; DRGs: disulfidptosis-related genes.