The result of the ROC curve demonstrated that THBS2 had a high predictive value in distinguishing GC from cancer-adjacent tissues (Figure 3C, GSE13911, AUC = 0.915, 95%CI: 0.843–0.987; Figure 3D, GSE54129, AUC = 0.979, 95%CI: 0.957–1.000). The gene discussed is THBS2; the disease is cancer.