NCT03998748

Brief Summary

Biogenetic messages about the etiology of mental illness (e.g., the "chemical imbalance theory" of depression) are increasing but the impact that these have on decision-making and motivation is not yet clear. This study will evaluate the impact of biogenetic feedback on cognitive control and default-mode network functioning, as well as motivation for different psychiatric treatment modalities. Participants with major depressive disorder (MDD) will be instructed that they are being tested for genetic susceptibility to depression and will be randomized to receive feedback that they either do or do not have a genetic predisposition to depression. Before and after receiving this feedback, brain activity will be assessed using high-density electroencephalogram (EEG). The investigators hypothesize that those exposed to the genetic feedback condition will evidence heightened ruminative default mode network activity and perceive medications to be more effective than psychotherapy.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
80

participants targeted

Target at P50-P75 for not_applicable major-depressive-disorder

Timeline
Completed

Started Oct 2019

Typical duration for not_applicable major-depressive-disorder

Geographic Reach
1 country

1 active site

Status
terminated

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 21, 2019

Completed
5 days until next milestone

First Posted

Study publicly available on registry

June 26, 2019

Completed
3 months until next milestone

Study Start

First participant enrolled

October 8, 2019

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2021

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2022

Completed
Last Updated

January 19, 2023

Status Verified

January 1, 2023

Enrollment Period

1.8 years

First QC Date

June 21, 2019

Last Update Submit

January 17, 2023

Conditions

Outcome Measures

Primary Outcomes (2)

  • Default Mode Network Connectivity

    Resting-state EEG

    Through study completion (approximately at hour 4 of study)

  • Error Positivity (Pe)

    Elicited between 200-500ms following an error

    Through study completion (approximately at hour 4 of study)

Secondary Outcomes (1)

  • Treatment Credibility and Expectancy Questionnaire

    Through study completion (approximately at hour 4 of study)

Study Arms (2)

Experimental

EXPERIMENTAL

This group of participants will receive the feedback that they have a genetic vulnerability to depression.

Other: Sham Genetic Feedback

Control

ACTIVE COMPARATOR

This group of participants will receive the feedback that they do not have a genetic vulnerability to depression.

Other: Sham Genetic Feedback

Interventions

Participants will be told either that they have or do not have a genetic predisposition to developing depression.

ControlExperimental

Eligibility Criteria

Age18 Years - 45 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Age 18-45
  • Written informed consent
  • BDI-II score greater than or equal to 14 (Beck et al.,1996)
  • Right-handed (Chapman \& Chapman,1987)
  • Normal or corrected-to-normal vision and hearing
  • Fluency in written and spoken English
  • Absence of any psychotropic medications for at least 2 weeks
  • Absence of any psychotherapy for at least 2 weeks

You may not qualify if:

  • Participants with suicidal ideation where study participation is deemed unsafe by the study clinician
  • Serious or unstable medical illness (cardiovascular, hepatic, renal, respiratory, endocrine, neurologic, or hematologic, autoimmune disease, etc.)
  • History of seizures or seizure disorder
  • Patients with psychotic features
  • Current use of other psychotropic drugs
  • Current use of psychotherapy
  • Clinical or laboratory evidence of hypothyroidism, hyperthyroidism, or other thyroid disorder that is not controlled by medication
  • Patients with a lifetime history of electroconvulsive therapy (ECT)
  • Evidence of sickle cell anemia, Raynaud's disease, ulcerative skin diseases, and hemophilia
  • Evidence of significant inconsistencies in self-report measures
  • History or current diagnosis of dementia
  • Illness receiving acute treatment at time of EEG session (e.g., taking antibiotics)
  • Infections illness (either transient or chronic, such as Lyme disease) at time of EEG session
  • Hairstyles that prevent application of the EEG cap (e.g., braids, dread locks, corn rows, recently dyed hair)
  • History of any psychiatric genotyping
  • +4 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

McLean Hospital

Belmont, Massachusetts, 02478, United States

Location

Related Publications (31)

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MeSH Terms

Conditions

Depressive Disorder, Major

Condition Hierarchy (Ancestors)

Depressive DisorderMood DisordersMental Disorders

Study Officials

  • Diego A Pizzagalli, PhD

    Mclean Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
BASIC SCIENCE
Intervention Model
FACTORIAL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director, Center for Depression, Anxiety and Stress Research

Study Record Dates

First Submitted

June 21, 2019

First Posted

June 26, 2019

Study Start

October 8, 2019

Primary Completion

August 1, 2021

Study Completion

August 1, 2022

Last Updated

January 19, 2023

Record last verified: 2023-01

Data Sharing

IPD Sharing
Will not share

Locations