Hormones and GFs that influence tumor growth and progression can be classified into several groups, amongst the most important being steroid hormones such as estrogens and androgens, Epidermal GFs (EGFs) and Neuregulins (NRGs), Insulin-like GFs (IGFs), Transforming GF-β (TGF-β), and Vascular Endothelial GFs (VEGFs) [5]. Here, TGFB1 is linked to neoplasm.