Figure 6.
SOX2 and IGF1R as prognostic factors in bladder cancer. (a,b) Kaplan–Meier analysis of SOX2 (a) and SOX4 (b) expression with recurrence-free survival in patients from TCGA_BLCA cohort. The significance was examined by log-rank test. *P < 0.05. (c) Kaplan–Meier analysis to assess the correlation of SOX2-high/SOX4-low and SOX2-low/SOX4-high signatures with recurrence-free survival in patients from TCGA_BLCA cohort. The significance was examined by log-rank test. *P < 0.05. (d) Kaplan–Meier analysis of IGF1R expression with recurrence-free survival in patients from TCGA_BLCA cohort. The significance was examined by log-rank test. **P < 0.01. (e) Kaplan–Meier analysis to assess the correlation of SOX2-high/IGF1R-high and SOX2-low/IGF1R-low signatures with recurrence-free survival in patients from TCGA_BLCA cohort. The significance was examined by log-rank test. ***P < 0.001. (f) The schematic model of SOX2-mediated oncogenesis of bladder cancer. SOX2 induces the expression of IGF2 and IGF1R, but suppresses that of IGFBP1, thus promoting AKT phosphorylation, with increased proliferation and survival of bladder cancer cells.