CCND1 and angiosarcoma: Expression of cyclin D1 (CCND1), a cell proliferation marker, VEGFA and VEGF165 (a splice variant of VEGFA), potent inducers of angiogenesis, was significantly higher in angiosarcoma cells than in normal endothelial cells and HAMON cells showed higher expression than ISO-HAS-B (Supplementary Fig. S3).