ITGA6 and skin squamous cell carcinoma: Notably, high expression of Msi1 (P = 0.033 and P = 0.003, Fig. 3a and b), ALDH1 (P = 0.015 and P = 0.002, Fig. 3c and d), and Sox2 (P = 0.005 and P = 0.003, Fig. 3e and f), and low expression of CD49f (P = 0.027 and P = 0.025, Fig. 3a and d) were correlated with poor OS and RFS in all the 179 CSCC patients who received postoperative adjuvant chemotherapy.