GPX4 and colorectal carcinoma: Correspondingly, cellular ROS generation, lipid peroxidation, accumulation of MDA contents and iron levels, and GSH reduction were strongly induced by sh‐FOXA2 both in drug‐sensitive and ‐resistant CRC cells, eventually contributing to ferroptosis through retarding the expression of Nrf2/GPX4 signaling, which was accompanied by decreased cell proliferation.