Figure 7 depicts a heatmap of immunological responses based on several algorithms. Overall, the ERG signature in this study provided the expected predictive performance for GC prognosis. Additionally, a high-risk score was associated with IC50 of chemotherapeutics such as lenalidomide, metformin, and pyrimethamine, implying that the signature might be a prospective predictor of chemosensitivity (Figure S5G–I). The gene discussed is ERG; the disease is gastric cancer.