KLF5 and esophageal squamous cell carcinoma: Although KLF5 expression in ESCC cells did not change significantly at this time (Figure 2A), both Ferrostatin‐1 and NAC treatments resulted in elevated clonal number of cells under radiation and enhanced cell proliferative activity (Figure 2B); as well as significant increases in migrating cells (Figure 2C) and invasion ability (Figure 2D).