Genes blocking ferroptosis were upregulated (e.g., Slc40a1, Slc7a11, Slc3a2, and Gpx4) in Tyro3-OE 4T1 tumor cells, whereas genes that induced or enhanced ferroptosis were downregulated (e.g., Slc5a1 and Tfrc), compared with levels in 4T1-P cells. This evidence concerns the gene SLC7A11 and neoplasm.