HMOX1 and breast cancer: High expression; Associated with poor prognosis; In iron‐deficient MDA‐MB‐231 cells or after inhibition by HO‐1 and activation by Hipo‐Yap pathway, DMT1 promotes migration and development of breast cancer cells by regulating iron metabolism; DMT1 upregulated by sulfasalazine and DOX contribute to the occurrence of ferroptosis in breast cancer cells [15, 16, 17, 18, 19].