FIGURE 4.

Association of the 23‐gene expression levels with clinical outcomes. A, Heat map and unsupervised hierarchical clustering showing the genes along rows and cases along columns in all cases. Green denotes low and red indicates high gene expression. Clusters 1 and 2 were characterized by high expression of genes associated with favorable and poor outcome, respectively. B, Kaplan‐Meier curves for progression‐free survival of cases with clusters 1 and 2 in all cases (n = 48). C, the nOR group (n = 39). Log‐rank P‐values are shown in the graphs