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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05523817
Other study ID # 2022P002110
Secondary ID 1R01MH129367-01A
Status Recruiting
Phase N/A
First received
Last updated
Start date March 12, 2024
Est. completion date December 31, 2028

Study information

Verified date May 2024
Source Massachusetts General Hospital
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Repetitive transcranial magnetic stimulation (rTMS) is a way of non-invasively stimulating specific brain networks and is an established treatment for Major Depressive Disorder (MDD). This proposal will reveal network mechanisms of the therapeutic effects of rTMS by investigating how stimulating each network specifically changes network connectivity and behavior. This will be done in a highly individualized manner in depressed and healthy patients, leading to more effective and more individualized treatments for depression.


Description:

Network models are increasingly invoked to characterize the neurobiological underpinnings of mental illnesses. Dysfunction within specific circuits promotes the formation of specific symptoms. This suggests an opportunity to treat specific symptoms by modulating specific circuits. Repetitive transcranial magnetic stimulation (rTMS) is capable of circuit-specific neuromodulation. It is also an established treatment for Major Depressive Disorder (MDD). Clinical experience suggests that rTMS treats different symptom constructs by stimulating different circuits. However, there remains a critical lack of mechanistic evidence to support putative network mechanisms of rTMS, limiting its ability to treat patients with more personalized and optimized approaches. This mechanistic proposal will first use resting-state functional connectivity (FC) MRI and customized analytic pipelines to characterize functional network topography in healthy and depressed individuals at high resolution.This data will be used to derive rTMS targets functionally situated in discrete prefrontal networks (e.g., control, default, salience, limbic/reward). Next, patients will take part in a within-subject design in which they undergo rTMS to each target on separate days. Each target will be stimulated four times on a given day, and after each stimulation changes will be measured with: (1) REST-BOLD MRI (to assess FC changes), (2) TASK-BOLD MRI (to assess changes in BOLD activation on paradigms validated to test RDoC constructs), (3) state-based questionnaires or (4) neuropsychological tests. This work will facilitate individualized neuromodulation approaches based on network topography. This will pollinate large-scale clinical trials assessing the effects of differential circuit modulation. It will also illuminate circuit-construct relationships across neuropsychiatric disorders.


Recruitment information / eligibility

Status Recruiting
Enrollment 80
Est. completion date December 31, 2028
Est. primary completion date December 31, 2027
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 65 Years
Eligibility Inclusion Criteria for healthy participants: - 18-65 years of age - Capacity to provide informed consent form to participate in the study Inclusion Criteria for participants with Major Depressive Disorder (MDD): - 18-65 years of age - Capacity to provide informed consent form to participate in the study - Currently in a major depressive episode. Comorbid anxiety disorders and personality disorders will be allowed provided that MDD is the primary diagnosis. Exclusion Criteria for all participants: - Meeting criteria, in the past or currently, for bipolar affective disorder, hypomania or mania. - Meeting criteria, in the past or currently, for a primary psychotic disorder (e.g., schizophrenia). - Neurological conditions with known structural brain lesions, e.g., intracranial masses, multiple sclerosis. - Any personal history of seizures or a family history of epilepsy in a first-degree relative. - Metal in the body that is ferromagnetic or metallic injury to the eyes. - Implanted pacemakers, medication pumps, vagal stimulators, deep brain stimulators, or ventriculoperitoneal shunts, etc. - Substance abuse or dependence that is current and active within the last six months, as indicated by self-report (e.g., heroin, cocaine, methamphetamines). - Inability to meet the safety criteria for MRI scanning for any other reason. - Severe or unstable medical illness. - Currently pregnant, as assessed with urine pregnancy test in women of childbearing age.

Study Design


Intervention

Device:
Intermittent Theta Burst Stimulation (iTBS)
iTBS is a form of non-invasive brain stimulation used to treat depression. It works on the principles of electromagnetic induction.

Locations

Country Name City State
United States Massachusetts General Hospital Boston Massachusetts

Sponsors (2)

Lead Sponsor Collaborator
Massachusetts General Hospital National Institute of Mental Health (NIMH)

Country where clinical trial is conducted

United States, 

References & Publications (2)

Eldaief MC, Halko MA, Buckner RL, Pascual-Leone A. Transcranial magnetic stimulation modulates the brain's intrinsic activity in a frequency-dependent manner. Proc Natl Acad Sci U S A. 2011 Dec 27;108(52):21229-34. doi: 10.1073/pnas.1113103109. Epub 2011 Dec 12. — View Citation

Fox MD, Halko MA, Eldaief MC, Pascual-Leone A. Measuring and manipulating brain connectivity with resting state functional connectivity magnetic resonance imaging (fcMRI) and transcranial magnetic stimulation (TMS). Neuroimage. 2012 Oct 1;62(4):2232-43. doi: 10.1016/j.neuroimage.2012.03.035. Epub 2012 Mar 19. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Resting-state functional connectivity (FC) Changes in connectivity within and between brain networks 1 hour
Primary Blood oxygenation level dependent (BOLD) activation Changes in activation resulting from performing a specific functional MRI (fMRI) task 1 hour
Primary Applied Cognition-General Concerns scale Subjects rate how statements about cognition and attention apply to them, e.g., "Thinking is foggy." Score range is 8-40, with higher scores indicating lesser cognitive concerns. 10 minutes
Primary Profile of Mood States Tension subscale Subjects are asked to rate how much certain adjectives about their mood apply to them at that moment, e.g., "tense", "nervous", "shaky." Score range: 0-28, higher scores indicating more tension. 5 minutes
Primary Profile of Mood States Vigor subscale Subjects rate how much mood adjectives apply to them at that moment, e.g., "full of pep," "energetic," "vigorous." Score range 0-28, higher scores indicating more vigor. 5 minutes
Primary Profile of Mood States Dejection subscale Subjects rate how much mood adjectives apply to them at that moment, e.g., "unworthy." Score range 0-28, higher scores indicating higher dejection. 5 minutes
Primary State Shame and Guilt Scale Subjects rate how much certain statements apply to them, e.g., "I feel regret." Score range is 10-50, higher scores indicate more shame/guilt. 5-10 minutes
Primary Fawcett-Clark Pleasure Capacity Scale Subjects anticipate how much they would enjoy a certain scenario, e.g., "you sit watching a beautiful sunset in an isolated part of the world." Score range is 36 to 180, higher scores indicate higher pleasure capacity. 5-10 minutes
Primary Digit-Span Test Subjects repeat number lists in forward or reverse order (maximum score is 8 forwards and 8 backwards, higher scores indicate better performance). 5 minutes
Primary Tower of London Task Subjects plan a series of moves to match a start set to a goal set. 5-10 minutes
Primary Delayed Match to Sample Task Subjects match patterns to a recently viewed sample pattern. Score ranges from 0-30, with higher scores indicating better performance. 5 minutes
Primary The Simon Test Subjects press different buttons based on incongruent spatial and/or color cues. Scores range from 0-30, with higher scores indicating better performance. 5 minutes
Primary Face-name Associative Paradigm Subjects must remember names paired with certain faces (DN-A). Scores range from 0-32, with higher scores indicating better performance. 30 minutes
Primary Reading the Mind Through the Eyes Test Subjects judge another person's mental state by looking at pictures of only their eyes. Score ranges from 0-41, higher scores indicate better performance. 10 minutes
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