Probable G-protein coupled receptor 146 is a protein that in humans is encoded by the GPR146gene.[5]The receptor has been shown to bind a gut-derived hormone called cholesin/C17orf50 in response to dietary cholesterol.[6] Consistent with this interaction, murine genetic disruption of GPR146 lowers serum cholesterol and reduces atheroscleroticaortic lesions.[7] It has also been identified as a possible receptor for C-peptide.[8]