Vascular endothelial growth factor (VEGF) has roles both in promoting blood vessel formation and in regulating the immune response, particularly in glioblastoma.
Treatment of glioblastoma patients with radiation, temozolomide (TMZ), and bevacizumab (BEV) led to a significant decrease in regulatory T cells (Tregs) but did not change their proportion relative to other immune cells.
Additionally, while there were decreases in certain T cell populations, levels of VEGF and placental growth factor (PlGF) in the blood increased, suggesting potential implications for combining immunotherapy with anti-angiogenic treatments.