Trace amine-associated receptor 1 (TAAR1) is a member of the G protein-coupled receptor (GPCR) TAAR family, which has been shown to be enriched in the central nervous system and periphery. TAAR1 can couple to diverse G protein subtypes, including Gs, Gq and Gi. Shandong University investigators have recently reported the discovery of a novel TAAR1 agonist as an antipsychotic drug candidate.