DHODH and cancer: Mao et al. reported that DHODH (Dihydroorotate dehydrogenase) coordinates with GPX4 by reducing ubiquitin formation in cancer cells, blocking the action of ferroptosis in mitochondrial intima [52], DHODH inhibitors induce ferroptosis and significantly inhibit tumor growth in solid tumors with low GPX4 expression, and the combination of ferroptosis inducer sulfasalazine and DHODH inhibitors has a good therapeutic effect in solid tumors with high GPX4 expression.