CAT and neoplasm: Notably, while the trends in peroxisomal mRNA/protein levels varied by tumour type, all neoplastic parotid gland samples expressed higher levels of catalase and other peroxisomal antioxidants, which may be an adaptation to the severe redox imbalance observed in cancers, raising the possibility of targeting the antioxidant activity of peroxisomes as a therapy to reduce tumour cell survival (Meyer et al. 2021).