Table 1 lists a number of putative GPCRs identified by NC-IUPHAR [161], for which preliminary evidence an endogenous ligand has been published, or there exists potential link to disease, disorder. These have recently reviewed in detail [121]. The are all Class A, rhodopsin-like GPCRs. A orphan not listed with as-yet unidentified ligands.Table 1: ligands GPR3GPR4GPR6GPR12GPR15GPR17GPR20 GPR22GPR...