PGRMC2 and cancer: Some proteins, such as Vimentin (VIM), Rho GDP-dissociation inhibitor 1 (Rho GDI), Lysosome-associated membrane glycoprotein 1 (LAMP1) and Membrane-associated progesterone receptor component 2 (PGRMC 2), have been previously identified as potential biomarkers for various cancers [10–14].