Patients with PH had significantly elevated serum MMP-7 levels when compared to the CHD-C only group excluding patients with concurrent BA (154 ng/mL [IQR 76, 238 ng/mL] vs 43 ng/mL [IQR 37–81 ng/mL], p=0.02, see Figure 4). This evidence concerns the gene MMP7 and breast angiosarcoma.