A log-rank test showed that the SOX2 expression level was associated with PFI for thyroid carcinoma (THCA; p = 0.010; Figure 7A), KIRC (p = 0.006; Figure 7B), COAD (p = 0.005; Figure 7C), LUAD and LUSC (p < 0.001; Figure 7D), GBM and MLGG (p < 0.001; Figure 7E), and BLCA (p = 0.018; Figure 7F). Here, SOX2 is linked to thyroid gland carcinoma.