Proline‐rich acidic protein 1 (PRAP1) colocalizes with MTTP in the ER and facilitates MTTP‐mediated lipid transport.[31] PRAP1 protects gastrointestinal epithelial cells from radiation‐induced apoptosis.[32] Therapy‐resistant cancer cells have recently been reported to exhibit increased susceptibility to ferroptosis,[33, 34] possibly due to their increased lipid metabolism, which is mediated by zinc finger E‐box binding homeobox 1 (ZEB1).[35]. Here, MTTP is linked to cancer.