Compass Pathways, or COMPASS Pathways, is a British pharmaceutical company developing psychedelics as potential medicines.[1][2] Its main drug candidate, psilocybin (COMP360), is currently in phase 3 clinical trials for treatment-resistant depression.[1][3] This candidate has received breakthrough therapy status from the U.S. Food and Drug Administration (FDA).[1] It is the most advanced psychedelic drug candidate in development besides Lykos Therapeutics's midomafetamine (MDMA).[4]