COMPASS Pathways revealed positive topline results from the mental healthcare firm’s Phase IIB clinical trial on the use of COMP360 psilocybin to address treatment-resistant depression (TRD). 

When major depressive disorder does not respond to at least two different types of antidepressant treatments in a moderate-to-severe depressive episode, it’s reclassified as treatment-resistant depression (TRD). South San Francisco-based VistaGen Therapeutics’ AV-101 failed to meet the primary efficacy endpoints for TRD in a Phase II clinical trial.

The U.S. FDA approved Johnson & Johnson’s nasal spray antidepressant Spravato for people resistant to other treatments, but placed restrictions on use of the drug.