Subsequently, we upregulated GPX4 expression in MDA-MB-231 cells with poorly expressed LINC00958 (p < 0.05, Figs. 4A-C) and downregulated GPX4 expression in MDA-MB-157 cells with overexpressed LINC00958 (p < 0.05, Figs. 4D-F) to conduct combined experiments to verify that LINC00958 affects ferroptosis in BC cells through GPX4. Here, GPX4 is linked to breast cancer.