Development of a Novel Transdiagnostic Intervention for Anhedonia - R61 Phase
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Detailed Description
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Locations
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North Carolina
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Chapel Hill, North Carolina, United States, 27599
- UNC Chapel Hill
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- 18-50 years old and treatment seeking;
- SHAPS scores ≥ 20, corresponding to clinically significant anhedonia;
- Clinician's Global Impression Scale-Severity score (CGI-S) > 3 to assure a clinically impaired sample;
- Seeking treatment for anhedonia (i.e., referred from an outpatient clinic or responded to an advertisement for anhedonia treatment; endorses desire for treatment during screening).
Exclusion Criteria:
- Those for whom medication management is the primary gold-standard treatment, including those with bipolar disorder/mania, schizophrenia spectrum, and other psychotic disorders;
- Prior treatment with behavioral activation therapy for depression or mindfulness-based treatments (those with exposure to other forms of psychotherapy, e.g., supportive therapy, will be eligible);
- Those who may have difficulty understanding the cognitive components of BATA, including those with intellectual disability, neurocognitive disorders, and dissociative disorders;
- Feeding and eating disorders which may have confounding effects on the fMRI signal;
- Substance Use Disorders given confounding effects of substances of abuse on the fMRI signal;
- Suicidal intent and plan;
- Psychotropic medication use in the past 4 weeks (8 weeks for fluoxetine) and/or current psychotherapy. Participants must be medication-free at study entry; study personnel will not supervise medication taper for the purpose of the study, but those who taper under the supervision of their regular provider will be eligible;
- Currently pregnant, as measured by urine pregnancy screen immediately before MRI scans;
- Positive urinalysis screen for cocaine, marijuana, opiates, methadone, amphetamines, and benzodiazepines (conducted on-site via Biosite Triage Meter Plus) at study entry.
- No neurological conditions (e.g., history of stroke, seizure, or TBI);
- Contraindications for fMRI imaging: Metal in the body, dental work that is not fillings or gold, any tattoos, any metal in the body, any metal injury - especially those to the eyes, any other type of implant unless they are 100% plastic.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
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Experimental: Behavioral Activation
Treatment will consist of 15 weekly 45-minute sessions.
Session 1 provides orientation and psychoeducation on anhedonia, and activity monitoring is introduced.
Sessions 2-3 include structured values assessments of 10 life areas to enhance motivation for sustained behavior change and to clarify goals.
Following goals clarification, an activity hierarchy is developed, establishing a set of idiographic behavioral targets across life areas prioritized by ease of implementation to scaffold task engagement during the course of treatment.
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Treatment will consist of 15 weekly 45-minute sessions.
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Active Comparator: Mindfulness Treatment
BATA will be compared to mindfulness based cognitive therapy (MBCT), chosen because its mechanisms of action are hypothesized to impact different brain mechanisms than BATA.
Mindfulness is nonjudgmentally bringing awareness and acceptance to one's present-moment experience.
MBCT will be administered in an individual format.
The MBCT protocol will be modeled on the session outlines presented in Wahbeh et al., 2014.
Treatment will be compromised of 15 weekly 45-minute sessions.
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Treatment will consist of 15 weekly 45-minute sessions.
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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Change From Baseline to Week 15 in Neural Activation
Time Frame: Baseline, 15 weeks
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Change due to BATA, relative to MBCT, from baseline in right caudate nucleus activation during the anticipation phase of the Monetary Incentive Delay (MID) task assessed by Functional Magnetic Resonance Imaging (fMRI).
The BOLD (Blood Oxygen Level-Dependent signal change is expressed as a z-score that represents the magnitude of change relative to baseline.
A score of 0 would correspond to no change, and a score of 1 would represent 1 standard deviation of change.
The difference in z-scores between the BATA and the MBCT groups reflects the difference in change in fMRI responses between the two treated groups.
Thus even a score of 0 in the BATA group may reflect greater change than observed in the MBCT group if change in the MBCT group is negative.
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Baseline, 15 weeks
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Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Change From Baseline to Week 15 in Snaith-Hamilton Pleasure Scale Score
Time Frame: Baseline, 15 weeks
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The Snaith-Hamilton Pleasure Scale (SHAPS), used to assess hedonic capacity.
The sum of the 14 items scores ranges from 0 to 56.
A higher score represents more anhedonic symptoms.
The below means represent change in units on the Snaith-Hamilton Pleasure Scale.
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Baseline, 15 weeks
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Collaborators and Investigators
Sponsor
Sponsor
Collaborators
Collaborators
Investigators
Investigators
- Principal Investigator: Gabriel S Dichter, PhD, UNC-Chapel Hill
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- 16-2268a
- R61MH110027-01A1 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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