Univariate Cox results indicated that age (HR = 1.0279, 95% CI: 1.0071–1.0492), N stage (HR = 2.0961, 95% CI: 1.2486–3.5188), histological grade (HR = 2.3502, 95% CI: 1.443–2.287), tumor status at follow-up (HR = 2.4912, 95% CI: 1.0770–5.7623), history of radiotherapy (HR = 0.4525, 95% CI: 0.2566–0.7980), DCC subtype (HR = 1.7700, 95% CI: 1.0773–2.9080), and residual tumor (HR = 1.7703, 95% CI: 1.0971–2.8568) were predictive of clinical outcomes in the TCGA cohort (Figure S4a). The gene discussed is DCC; the disease is neoplasm.