Moreover, higher percentages of mononuclear myeloid cells in the BALF were observed in patients with AAV-ILD and SSc-ILD, and a more detailed analysis revealed differences in the phenotypes of these mononuclear myeloid cells, such as an increase in the percentage of mononuclear myelocytes expressing NEAT1 in patients with AAV-ILD. The gene discussed is NEAT1; the disease is systemic sclerosis.