The ability of neuropilin‐ 1 (NRP1) to bind and augment the action of growth factors such as vascular endothelial growth factor (VEGF), transforming growth factor‐β1 (TGF‐β1), placental growth factor (PLGF), HGF (scatter factor) and Semaphorins 3A, 4F (Pellet‐Many, Frankel, Jia, & Zachary, 2008) are consistent with its emerging role as a tumor promoting receptor acting by a number of mechanisms. Here, NRP1 is linked to neoplasm.