Positive Processes and Transition to Health — PATH  

Major Depressive Disorder Clinical Trial

Official title: Treatment of Stress-Related Psychopathology: Targeting Maladaptive and Adaptive Event Processing

Status Completed

Clinical Trial Summary

The R61 will be an open trial to determine if Positive Processes and Transition to Health (PATH) engages the proposed targets: unproductive processing, avoidance, and reward deficits in a sample of 45 adults who have experienced a destabilizing life event involving profound loss or threat, report persistent stressor-related symptoms of PTSD and/or depression, and are elevated on symptoms related to 2 of the 3 therapeutic targets. Additionally, will examine whether patients perceive PATH as helpful and complete/adhere to treatment, and therapist fidelity. Patients will receive 6 sessions of PATH (with 2 boosters, if partial responders). Primary targets will be assessed at pre-treatment, week 4, post-treatment, and at 1- and 3-month follow-up; secondary targets at pre-treatment, weekly during treatment, post-treatment, and at 1- and 3-month follow-ups.

Clinical Trial Description

Evidence-based psychotherapies for posttraumatic stress disorder (PTSD) and depression consistently produce strong, clinically meaningful effects for many individuals. However, these interventions also have significant dropout rates, a large minority of individuals continue to have debilitating symptoms, and even those who respond may be vulnerable to relapse upon future stressors. More efficient and mechanistically precise interventions are needed. Consistent with the cross-cutting theme of studying the role of the environment in the NIMH Strategic Plan, the etiological role of exposure to destabilizing, stressful life events is common to both PTSD and depression. Not only do they share common distress-related triggers, symptoms, and maintaining processes, but they also commonly co-occur (upwards of 60%). Current PTSD and depression treatments typically focus on their respective disorders rather than on common processes that maintain psychopathology; and, importantly, they do not explicitly target positive adaptive processes associated with resilience. Decades of experimental studies, prospective studies, and psychotherapy trials have identified interconnected maladaptive and adaptive processes associated with persistent psychopathology after stressful, destabilizing events. These maladaptive processes include: 1) unproductive event processing; 2) avoidance; and 3) reward sensitivity and processing deficits. These processes prolong negative mood, interfere with adaptive coping and processing of emotional material, and increase sensitivity to future stressful life events. PATH (Positive Processes and Transition to Health) directly targets these maladaptive processes while also teaching parallel adaptive skills (constructive processing, approach, and positive emotion processing and reward seeking). Six, 90-min sessions target individuals who have experienced a destabilizing life event and have persistent stressor-related symptoms. PATH utilizes life event processing (revisiting, meaning making), focusing repeatedly on an identified destabilizing life event, positive life events, and future events as a framework to identify maladaptive processes and teach constructive processing skills. PATH has the potential to reduce dropout, improve treatment engagement and outcomes, identify potential treatment mechanisms, and ultimately reduce the costly human and economic burden of stressor-related psychopathology.

For the open trial's "Go" to be achieved and to proceed to the R33, two criteria must be met. The first is that at least 2 of the 3 primary targets must change via PATH. A moderate effect size (d = 0.60) was chosen to reflect evidence of clinically meaningful target engagement (see Gold et al., 2017), in line with NIMH guidelines for a preliminary signal of target engagement/efficacy in intervention trials. Second, at least one of the secondary measures must show a moderate effect (d = 0.50) from pre- to post-treatment. We included measures of each of the targets, as they are conceptualized as interrelated parts of a "stuck" system. For "Go" to an R01 after the R33, in addition to target engagement, primary outcomes of PTSD and depression must show clinically meaningful gains (e.g., Barth et al., 2016; Cusak et al., 2016). ;

Related Conditions & MeSH terms

• Depression
• Depressive Disorder
• Depressive Disorder, Major
• Major Depressive Disorder
• Post Traumatic Stress Disorder
• Stress Disorders, Post-Traumatic
• Stress Disorders, Traumatic

• NCT number: NCT04678232
• Study type: Interventional
• Source: Case Western Reserve University
• Status: Completed
• Phase: N/A
• Start date: October 1, 2021
• Completion date: June 30, 2023