REVIEW The vascular endothelial growth factor receptor (VEGFR), a signal protein, is responsible for the origination and progression of various tumours. VEGFR-1 plays a major role in the growth of new blood vessels from the old blood vessels (angiogenesis) and tumour growth. VEGFR-2 plays an important role in the endothelial cell proliferation, migration and survival, and angiogenesis. VEGFR-3 is involved in the formation of new lymphatic vessels from already existing lymphatic vessels (lymphangiogenesis). Axitinib has the ability to inhibit VEGFR-1, 2 and 3 selectively. It binds to the receptors of the VEGF and inhibits it, thereby preventing the formation of new blood vessels.
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