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 Cognitive Processing Therapy, Prolonged Exposure, or Skills Training for Affective and Interpersonal Regulation. The registry lists allocation as randomized. This study will look at: How practical it is to offer another round of proven therapy.
They plan to enroll about 400 people at Chicago. Taking part typically means following a program (exercise, therapy, diet, or an app) plus check-ins.
Official title (unrewritten)
Evaluating Evidence Based Options for Initial PTSD Treatment Non-Responders
Interventions: Cognitive Processing Therapy, Prolonged Exposure, Skills Training for Affective and Interpersonal Regulation
Primary outcome (registry wording): PTSD Checklist for DSM-5 (PCL-5)