CAT and metabolic dysfunction-associated steatotic liver disease: Interestingly, some studies have revealed significantly reduced CAT activity in MASH patients as compared to patients with simple fatty liver and healthy subjects, respectively (Videla et al. 2004), as well as in MASLD patients in comparison to the healthy controls (Das et al. 2008; Kosmalski et al. 2023; Kumar et al. 2013; Yesilova et al. 2005).