Specifically, carbohydrate‐related metabolic pathways in the CD8‐FGFBP2, CD8‐ZNF683, and CD8‐IFNG subgroups were more active in IPF patients, whereas lipid‐related metabolic pathways were more active in the CD8‐ZNF683 subgroup. Here, CD8A is linked to idiopathic pulmonary fibrosis.