did not reach statistical significanceP = 0.1629
In patients with PM, ET‐1 levels were 27.9% higher in the subgroup with ILD (13.01 ± 4.59 pg/mL) compared to the subgroup without ILD (10.17 ± 3.12 pg/mL), though this difference did not reach statistical significance ( P = 0.1629; Figure 2C ).