FAP and pheochromocytoma: Figure 4B–4H further demonstrated that individuals with high FAP expression have shorter DFI times, including ESCA (p-value = 0.004), GBMLGG (p-value = 0.0095), KIRP (p-value < 0.0001), LGG (p-value = 0.0082), PAAD (p-value = 0.012), STES (p-value < 0.0001), and STAD (p-value = 0.00056). In contrast, pheochromocytoma and paraganglioma (PCPG) patients with high FAP expression had longer DFI times (p-value = 0.014) (Figure 4I).