Notably, serum AREG levels in IIM patients with ILD were significantly higher than those of HCs (IIM patients with ILD: median, 22.4 pg/mL (IQR: 11.8–34.6); HCs: median, 10.7 pg/mL (IQR: 8.3–11.5); p = 0.027) (Figure 2A). The gene discussed is AREG; the disease is interstitial lung disease.