ML162 is a small molecule that induces ferroptosis via covalent inhibition of cellular phospholipid glutathione peroxidase (GPX-4; GPX4; GSHPx-4; PHGPx; snGPx; snPHGPx). Synthetic lethality studies in cancer cultures identify contributing factors such as HRas(G12V) expression and fumarate hydratase (FH) deletion to ML162 sensitivity (IC50 = 25 nM & 35 nM, respectively, in BJeLR-HRas(G12V) & UOK262-FH-/- cultures).