The purpose of this study is to evaluate the efficacy of intranasal esketamine 84 milligram (mg) compared with intranasal placebo in addition to comprehensive standard of care in reducing the symptoms of Major Depressive Disorder (MDD), including suicidal ideation, in participants who are assessed to be at imminent risk for suicide, as measured by the change from baseline on the Montgomery-Asberg Depression Rating Scale (MADRS) total score at 24 hours post first dose.
If you or a loved one are having thoughts of suicide, please seek immediate medical help. Go to the emergency room or call the National Suicide Prevention Lifeline at 1-800-273-8255.
Participants will receive intranasal esketamine 84 milligram (mg) two times per week for 4 weeks (Days 1, 4, 8, 11, 15, 18, 22, and 25).
Participants will receive intranasal placebo two times per week for 4 weeks (Days 1, 4, 8, 11, 15, 18, 22, and 25).
The standard of care antidepressant treatment (antidepressant monotherapy or antidepressant plus augmentation therapy) will be determined by the treating physician(s) based on clinical judgement and practice guidelines prior to randomization, and the treatment will be initiated on Day 1.
Banfield, Argentina
Ciudad de Buenos Aires, Argentina
Córdoba, Argentina
La Plata, Argentina