| Recruiting | 2 | 180 | Europe | OSU6162, OSU-6162, PNU-96391, Placebo | Göteborg University, Arvid Carlsson Research AB | Depression, Depressive Disorder, Treatment-Resistant, Depressive Disorder, Depressive Episode, Recurrent Depressive Disorder, Recurrent Depression | 05/26 | 08/26 | | |