Fig. 2. The correlations of OCT4, SOX2, and NANOG expressions with OS. (A) Correlation of OCT4⁺ and OCT4⁻ with OS. (B) Correlation of SOX2⁺ and SOX2⁻ with OS. (C) Correlation of NANOG⁺ and NANOG⁻ with OS. Kaplan-Meier curves were used to analyse the correlation of OCT4, SOX2, and NANOG expressions with OS. Comparison of two groups was made by log-rank test. p<0.05 was considered significant. OS, overall survival; OCT4, octamer-binding transcription factor 4; SOX2, sex determining region Y-box 2; NANOG, Nanog homebox.