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Dimensional Brain Behavior Predictors of CBT Outcomes in Pediatric Anxiety

2016-06-22 19:38:21 | BioPortfolio

Summary

Anxiety is among the most prevalent, costly and disabling illnesses and tends emerge early in childhood. Cognitive behavioral therapy (CBT) is the first-line treatment for early life anxiety, but as many as 40% of young patients who receive CBT fail to get better. The proposed study will examine brain changes marking positive response to CBT for anxiety and how these changes may differ in children compared adolescents. By helping us to understand how CBT works, this study will pave the way for new treatments to stop anxiety early.

Description

Impairing anxiety affects 33% of the population by adolescence and can become chronic, leading to depression, substance abuse, school-drop out and even suicide. To reduce anxiety and prevent its sequelae, patients must be effectively treated early; yet, the first line intervention, cognitive behavioral therapy (CBT), has a heterogeneous response with 40-60% of treated patients continuing to experience impairment from residual symptoms. The reasons for variability in CBT outcomes remain poorly understood, but individual (including developmental) differences in brain-behavioral targets of CBT may contribute. This proposal addresses two primary questions: 1) Do individual differences in CBT-relevant brain-behavioral functions lead to variation in CBT outcomes? and 2) Does development contribute to this variation? To answer these questions, this study will measure changes in brain and behavior markers of anxiety, before and after CBT, in children and adolescents across traditional, categorical anxiety disorders (e.g., social, generalized and separation anxiety disorders). Given that CBT facilitates control over fear to enable effective regulation, we hypothesize that brain-behavioral markers of fear sensitivity, cognitive regulatory capacity and cognitive regulation of fear will predict and characterize mechanisms of CBT effect. In addition, we hypothesize that brain-behavioral markers will differentially relate to CBT effect, depending on patient age.

Children and adolescents (7.0 - 17.99 years) with clinically impairing anxiety will be randomized to receive CBT or a relaxation control therapy for 12 weeks. Before and after therapy, all participants will receive an MRI scan to see what regions of the brain become active when emotion and concentration tasks are performed and how that activation is changed after CBT.

While the study itself is of parallel design for its data-collection and measurement purpose, it is listed as a partial-crossover design in the IRB-approved protocol because subjects randomized to the relaxation therapy are given the option of receiving 12-weeks of CBT sessions after the relaxation therapy data has been collected. Some limited data will be collected in patients who are initially randomized to relaxation therapy but then opt to crossover to CBT. MRI data will also be collected in healthy youth before and after 12 weeks (but without intervening therapy) to allow the investigators to control for the simple effects of time that may cause brain changes that are not related to therapy.

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Investigator, Outcomes Assessor), Primary Purpose: Treatment

Conditions

Anxiety Disorders

Intervention

Cognitive Behavioral Therapy, Relaxation Therapy

Location

University of Michigan
Ann Arbor
Michigan
United States
48109

Status

Not yet recruiting

Source

University of Michigan

Results (where available)

View Results

Links

Published on BioPortfolio: 2016-06-22T19:38:21-0400

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