MMP7 and idiopathic pulmonary fibrosis: Actual mean plasma MMP7 concentrations and p-values for IPF and CTD-ILD groups in comparison with the control group (mean MMP7 plasma concentration 1.4 ± 0.15 ng/mL) were as follows: IPF, 3.13 ± 0.38 ng/mL (p < 0.0001); CTD-ILD, 5.14 ± 1.23 ng/mL (p < 0.0001).