EGFL7 and neoplasm: Heatmap transformation followed by correlation analysis revealed that EGFL7 clustered with stromal markers (Fig 1D), e.g., vascular endothelial growth factor receptor 1 and 2 (VEGFR1/2) or von Willebrand factor (vWF) but not with tumor markers such as the epidermal growth factor receptor (EGFR) or vimentin (VIM).