Finally, our recent publication [23] demonstrated the involvement of ORs in tumor progression: we showed, for the first time, that the PSGR (Prostate Specific G protein-coupled Receptor, also named OR51E2), an OR endogenously expressed in LNCaP prostate cancer cells, promotes cell invasiveness in vitro and metatasis emergence in vivo. Here, OR51E2 is linked to prostate carcinoma.