**Figure 2.** **Identification of PDEIRGs through univariate Cox regression analysis.** The red dots represent DEIRGs with hazard ratios > 1 (*p* < 0.05), the green dots represent DEIRGs with hazard ratios < 1 (*p* < 0.05) and the black dots represent DEIRGs that were not associated with prognosis (*p* > 0.05).