What this phase means
Phase 2: researchers already know a roughly safe dose (from phase 1). This stage asks whether the treatment actually helps the condition, and watches side effects more closely.
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 SPT-300, or Placebo. The registry lists allocation as randomized. This is a randomly assigned, parallel-group, neither you nor the study doctors know who gets the real treatment, compared with a dummy treatment, this drug alone study to measure the how well it works, safety, and tolerability of SPT-300 (GlyphAllo) in adults with major depressive disorder (major depression), with or without anxious distress.
They plan to enroll about 360 people at 54 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
A Randomized, Parallel-Group, Double-Blind, Placebo-Controlled, Monotherapy Study of the Efficacy, Safety, and Tolerability of SPT-300 in Adults With Major Depressive Disorder (MDD), With or Without Anxious Distress
Interventions: SPT-300, Placebo
Primary outcome (registry wording): Change From Baseline to Day 42 in Hamilton Depression Rating Scale-17 (HAM-D-17) Total Score