The results demonstrated that PDGFA expression remained independently associated with OS (HR, 1.536; 95% CI, 1.034–2.282; P = .034), as well as N stage (HR, 2.143; 95% CI, 1.400–3.279; P = .000) and tumor location (lower vs upper: HR, 0.488; 95% CI, 0.255–0.934; P = .030) (Table 5). The gene discussed is PDGFA; the disease is neoplasm.