These data were corroborated by several publications reporting reduced peroxisomal protein abundance (catalase, ABCD3, ACOX1, PXMP2) or enzymatic activities (catalase, D-amino acid oxidase, polyamine oxidase, peroxisomal β-oxidation) in colon tumor tissue, implying an overall reduction of peroxisome abundance and function in the neoplastic tissue (Baur and Wendel 1980; Cablé et al. 1992; Keller et al. 1993; Lauer et al. 1999). This evidence concerns the gene CAT and colonic neoplasm.