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Overall survival (OS) and receiver operating curve (ROC) analysis of four-gene signature. (a) The OS analysis of four-gene signature in TCGA cohort. (b) The OS analysis of four-gene signature in ICGC cohort. (c) The ROC of four-gene signature for 0.5, 1, 2, 3, and 5 years in TCGA cohort. (d) The ROC of four-gene signature for 0.5, 1, 2, 3, and 5 years in ICGC cohort.
