Kerry J Ressler1, Jordan W Smoller2. 1. Division of Depression and Anxiety Disorders, James and Patricia Poitras Chair in Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA, USA. 2. Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Department of Epidemiology, Harvard T.H. Chan School of Public Health, Stanley Center for Psychiatric Research, Broad Institute, Boston, MA, USA.