What this phase means
Phase 3: this treatment already looked useful in smaller studies. Now it is tested in a large group, often against standard care or a dummy treatment, to see if it should be approved.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Esketamine, Midazolam, or Oral Placebo. The registry lists allocation as randomized. This study wants to evaluate how well JNJ-54135419 works (how well it works) in addition to comprehensive standard of care (SoC) in rapidly reducing the symptoms of major depressive disorder (major depression, a mental disorder characterized by a persistent feeling of sadness and loss of interest in activities) as compared with psychoactive dummy treatment (placebo) (does not contain JNJ-54135419) plus SoC in adolescent participants with acute suicidal ideation or behavior.
They plan to enroll about 258 people at 49 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
A Double-blind, Randomized, Psychoactive Placebo-controlled Study to Evaluate the Efficacy and Safety of Intranasal Esketamine 84 mg in Addition to Comprehensive Standard of Care for the Rapid Reduction of the Symptoms of Major Depressive Disorder in Adolescent Participants With Acute Suicidal Ideation or Behavior
Interventions: Esketamine, Midazolam, Oral Placebo, Intranasal Placebo
Primary outcome (registry wording): Change from Baseline in Depressive Symptoms Measured by Children's Depression Rating Scale - Revised (CDRS-R) Total Score at 24 Hours Post First Dose