Figure 9. External validation of the IRRS model in predicting RFS of GC based on the GSE26253 cohort. (A) The Kaplan–Meier survival analysis of the IRRS signature for predicting the RFS of GC patients based on the GSE26253 cohort. (B) The distribution of the risk score of GC patients in the GSE26253 cohort. (C) The expression heatmap of three prognostic variables in the GSE26253 cohort. (D) The distribution of the recurrent status of GC patients in the GSE26253 cohort.