LCN2 and hepatocellular carcinoma: We utilized HCC cells cultured with RSL3 as a positive control for ferroptosis and found that LCN2 overexpression led to a significant decrease in the intracellular levels of MDA, 4‐HNE (Figure 4D; Figure S4D, Supporting Information) and total iron (Figure 4E; Figure S4E, Supporting Information), as well as an increase in the GSH/GSSG ratio (Figure S4F, Supporting Information).