HIF1A and neoplasm: Hypoxia‐inducible factor 1‐α (HIF‐1α), a master regulator of numerous hypoxia‐inducible genes, can upregulate VEGF, promoting angiogenesis33 and enhancing tumour survivability through mitogen‐activated protein kinase/extracellular signal‐regulated kinases (MAPK/ERK) pathway.34