Figure 5A showed that the B cell, CD4+ T cell, M2 macrophage, neutrophil, and mast cell correlation values with the risk score were -0.368, -0.230, -0.333, -0.238, and -0.282, respectively, indicating that the abundance of these tumor-infiltrating immune cells correlated negatively with the LUAD risk score (Figure 5B–5D). The gene discussed is CD4; the disease is neoplasm.