What this phase means
This study does not use the classic phase 1–4 drug ladder. It may be a device, a behavior program, a surgery timing study, or an early feasibility test.
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 Transdiagnostic app intervention, or Transdiagnostic mastery course. The registry lists allocation as randomized. Some adolescents experience periods of anxiety and/or depression, and some find that these periods return over time.
They plan to enroll about 495 people at Oslo. Taking part typically means following a program (exercise, therapy, diet, or an app) plus check-ins.
Official title (unrewritten)
Digital Interventions for Relapse Prevention in Adolescence
Interventions: Transdiagnostic app intervention, Transdiagnostic mastery course
Primary outcome (registry wording): Relapse: Number of participants scoring above the diagnostic cut-off on the PHQ-9 modified for teens during the 12-month follow-up.