The O'Reilly Factor | The X Factor (UK) | Microphthalmia-associated transcription factor | The X Factor | Alpha Phi Alpha | Fear Factor | Sigma Alpha Epsilon | Max Factor | Kappa Alpha Psi | Alpha | Phi Mu Alpha Sinfonia | Pi Kappa Alpha | Alpha Blondy | The X Factor (TV series) | Piper Alpha | B-cell activating factor | Alpha Delta Phi | Alpha Centauri | alpha | Epidermal growth factor receptor | Sigma Alpha Mu | Kappa Alpha Theta | ISO 3166-1 alpha-2 | Alpha Video | Alpha Kappa Alpha | Alpha Epsilon Pi | Sony Alpha | Psi Factor: Chronicles of the Paranormal | Kappa Alpha Society | Astro Boy: Omega Factor |
HIF-1α causes the production of vascular endothelial growth factor, platelet derived growth factor B, erythropoietin and transforming growth factor alpha, which act to stimulate growth of cells within the tumour.