ROC curves were used to verify that GPX3 is a valuable diagnostic biomarker in several types of cancers, including BRCA, COAD, LUAD, stomach adenocarcinoma (STAD), head and neck squamous cell carcinoma (HNSC), kidney renal papillary cell carcinoma (KIRP), and THCA, as shown in Figure 1C (AUCs > 0.7). This evidence concerns the gene GPX3 and colon adenocarcinoma.