AOC3 and idiopathic pulmonary fibrosis: Amine oxidase copper-containing 3 (AOC3), previously identified as an IF/TA-related DEG [12,17], and carcinoembryonic antigen-related cell adhesion molecule 3 (CEACAM3) expression were reportedly upregulated in PBMCs from idiopathic pulmonary fibrosis patients [52].