Studies have shown that glutathione peroxidase 2 (GPX2) in cervical cancer cells activates EMT through the Wnt/β-catenin signaling pathway, leading to poor tumor prognosis, and confirmed that GPX2 can reduce apoptosis by reducing intracellular ROS accumulation, which fully proved the close relationship between ROS and the Wnt/β-catenin signaling pathway and EMT process in tumor cells [63]. The gene discussed is GPX2; the disease is cervical cancer.