In addition, to further explore the predictive ability of EPOR on the prognosis of patients with COAD, KIRC, LUAD, MESO, and PAAD, we first performed ROC analysis jointly with TCGA and GTEx databases and unexpectedly found that EPOR had better predictive ability on the prognosis of COAD, LUAD, and PAAD, with AUCs above 0.8 (Figure 4A). Here, EPOR is linked to colon adenocarcinoma.