VEGFA and polycystic ovary syndrome: In addition to VEGF, several other angiogenic factors, such as angiopoietins (e.g., Ang-1 and Ang-2), PDGF (platelet-derived growth factor) [24], TGF-β (transforming growth factor-β), and basic bFGF (fibroblast growth factor) are also dysregulated in PCOS [25].