SOX2 and neoplasm: There was a statistically significant correlation between SOX2 and the age (64 years, p < 0.025), the pathological tumor size (T1/T2 vs. T3/T4, p < 0.001), the clinical stage (I/II vs. III/IV, p < 0.004), and extracapsular spread (Ecs0 vs. Ecs+, p < 0.031).