Coherent with this idea, the lungs of patients with COPD and IPF commonly exhibit increased CD8+ T‐cells (Maeno et al., 2007; Papiris et al., 2007; Serezani et al., 2022; Villaseñor‐Altamirano et al., 2023). Here, CD8A is linked to idiopathic pulmonary fibrosis.