VEGFA and invasive breast carcinoma: This prospective study was designed to examine the utility of stromal cell-derived factor 1α (SDF-1α) and selected vasculo-angiogenic parameters—vascular endothelial growth factor A (VEGF-A), the soluble forms of VEGF receptors type 1 and 2, and the number of circulating endothelial progenitor cells (circulating EPCs)—for estimating the probability of disease relapse in invasive breast cancer (IBrC) patients.