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. 2022 Feb 5;22:62. doi: 10.1186/s12935-022-02476-3

Fig. 5.

Fig. 5

External validation of the risk signature in GEO cohort. A The survival status for each patient in validation cohort (low-risk population: on the left side of the dotted line; high-risk population: on the right side of the dotted line) (upper panel). Distribution of patients in the GEO cohort based on the median risk score in the TCGA cohort (lower panel). B PCA plot for HNSCC patients in GEO cohort. C Kaplan–Meier curves for comparison of the OS between low- and high-risk groups. D Time-dependent ROC curves for HNSCC