Transcranial Magnetic Stimulation for MCI

NCT ID: NCT05992831

Last Updated: 2025-04-15

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 60 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-06-18
• Study Completion Date: 2028-04-30

Brief Summary

The goal of this phase II study is to establish the dose-response curves of a safe and clinically feasible non-invasive brain stimulation technique (accelerated Transcranial Magnetic Stimulation (TMS)) to improve both depression and cognitive function in Mild Cognitive Impairment (MCI) patients with comorbid depression. It is known that TMS can effectively treat depression. Identifying the right dose of accelerated TMS in MCI patients is necessary prior to designing subsequent trials to determine efficacy. These results will inform future clinical trials of accelerated TMS for MCI, with the long-term goal of developing an efficacious treatment to prevent dementia.

Detailed Description

Mild Cognitive Impairment (MCI) is a heterogenous syndrome of cognitive and neuropsychiatric symptoms, with as much as 40% of patients being diagnosed with comorbid depression. The goal of this phase II trial is to establish the functional form of the dose-response curves for accelerated intermittent theta burst stimulation (iTBS) to ameliorate depression and cognitive function in MCI. Identifying the right dose is necessary prior to designing subsequent trials to ascertain the efficacy of accelerated iTBS for MCI. In our two phase I trials, we chose treatment parameters based on robust prior literature on accelerated, high-dose rTMS delivery (i.e. accelerated iTBS, 600 pulses at 50 Hz per session), intensity (at 120% resting motor threshold [rMT]), stimulation site left dorsolateral prefrontal cortex (l-dlPFC), and site targeting (Beam F3). The course of treatment was guided by our clinical experience with mild cognitive impairment and vascular cognitive impairment patients as to what we hypothesized they would comfortably tolerate, which was confirmed by the acceptability ratings. In this phase II trial, we focus on manipulating one dosing parameter - total number of active pulses - to rigorously model the dose-response curves such that future phase II/III trials can be more efficient, decrease treatment burden, and accelerate response time.

Aim 1: Establish the dose-response curves for reduced depression following accelerated iTBS in MCI.

Aim 2: Establish the dose-response curves for improved cognition following accelerated iTBS in MCI.

Exploratory Aim 1: Examine alterations in functional connectivity following accelerated iTBS-rTMS in MCI.

Exploratory Aim 2: Examine blood-based biomarkers of neurodegeneration as effect modifiers.

Conditions

Mild Cognitive Impairment; Depression

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Dose Step 1 - 0 Active Accelerated iTBS Sessions

Participant will receive 10 sessions of accelerated iTBS on each of 6 treatment days, including 0/10 active sessions and 10/10 sham sessions per day for a total of 0 active sessions

Group Type: SHAM_COMPARATOR

Sham Comparator

Intervention Type: DEVICE

To achieve adequate blinding, participants will go through the same number of sessions per day irrespective of the active and/or sham dose-step combination to which they are assigned. Sham sessions will be assigned in random order over the 10 sessions. The sequence of active and/or sham sessions for each treatment day is assigned a random code that is entered into the TMS system by the coordinator to maintain the integrity of the blind.

Dose Step 2 - 12 Active Accelerated iTBS Sessions

Participant will receive 10 sessions of accelerated iTBS on each of 6 treatment days, including 2/10 active sessions and 8/10 sham sessions per day for a total of 12 active sessions (7,200 active pulses).

Group Type: EXPERIMENTAL

Accelerated iTBS

Intervention Type: DEVICE

The investigators will treat participants with accelerated intermittent theta burst stimulation. iTBS will be delivered via a MagVenture MagPro TMS System with a Cool-B65 coil, targeting to direct the stimulation to the left dorsolateral prefrontal cortex (l-dlPFC). The investigators will use a standard resting motor threshold (rMT) determination to determine the TMS dose. Treatment will be delivered at 120% of the motor threshold. Total treatment time will be controlled; all participants will perceive receiving active treatment for 10 3-min sessions with 10-15 min inter-session intervals, resulting in a 3-hour treatment day. At pre-treatment, a focal electrical sham will be individually titrated to participant tolerability. Participants then receive an individualized level of sham stimulation throughout treatment, to bolster the blind. Participants will be told that they will be receiving different doses throughout the treatment day, again to maintain the integrity of the blind.

Sham Comparator

Intervention Type: DEVICE

To achieve adequate blinding, participants will go through the same number of sessions per day irrespective of the active and/or sham dose-step combination to which they are assigned. Sham sessions will be assigned in random order over the 10 sessions. The sequence of active and/or sham sessions for each treatment day is assigned a random code that is entered into the TMS system by the coordinator to maintain the integrity of the blind.

Dose Step 3 - 24 Active Accelerated iTBS Sessions

Participant will receive 4/10 active sessions and 6/10 sham sessions per day for a total of 24 active sessions (14,400 active pulses).

Group Type: EXPERIMENTAL

Accelerated iTBS

Intervention Type: DEVICE

The investigators will treat participants with accelerated intermittent theta burst stimulation. iTBS will be delivered via a MagVenture MagPro TMS System with a Cool-B65 coil, targeting to direct the stimulation to the left dorsolateral prefrontal cortex (l-dlPFC). The investigators will use a standard resting motor threshold (rMT) determination to determine the TMS dose. Treatment will be delivered at 120% of the motor threshold. Total treatment time will be controlled; all participants will perceive receiving active treatment for 10 3-min sessions with 10-15 min inter-session intervals, resulting in a 3-hour treatment day. At pre-treatment, a focal electrical sham will be individually titrated to participant tolerability. Participants then receive an individualized level of sham stimulation throughout treatment, to bolster the blind. Participants will be told that they will be receiving different doses throughout the treatment day, again to maintain the integrity of the blind.

Sham Comparator

Intervention Type: DEVICE

To achieve adequate blinding, participants will go through the same number of sessions per day irrespective of the active and/or sham dose-step combination to which they are assigned. Sham sessions will be assigned in random order over the 10 sessions. The sequence of active and/or sham sessions for each treatment day is assigned a random code that is entered into the TMS system by the coordinator to maintain the integrity of the blind.

Dose Step 4 - 36 Active Accelerated iTBS Sessions

Participant will receive 6/10 active sessions and 4/10 sham sessions per day for a total of 36 active sessions (21,600 active pulses).

Group Type: EXPERIMENTAL

Accelerated iTBS

Intervention Type: DEVICE

The investigators will treat participants with accelerated intermittent theta burst stimulation. iTBS will be delivered via a MagVenture MagPro TMS System with a Cool-B65 coil, targeting to direct the stimulation to the left dorsolateral prefrontal cortex (l-dlPFC). The investigators will use a standard resting motor threshold (rMT) determination to determine the TMS dose. Treatment will be delivered at 120% of the motor threshold. Total treatment time will be controlled; all participants will perceive receiving active treatment for 10 3-min sessions with 10-15 min inter-session intervals, resulting in a 3-hour treatment day. At pre-treatment, a focal electrical sham will be individually titrated to participant tolerability. Participants then receive an individualized level of sham stimulation throughout treatment, to bolster the blind. Participants will be told that they will be receiving different doses throughout the treatment day, again to maintain the integrity of the blind.

Sham Comparator

Intervention Type: DEVICE

To achieve adequate blinding, participants will go through the same number of sessions per day irrespective of the active and/or sham dose-step combination to which they are assigned. Sham sessions will be assigned in random order over the 10 sessions. The sequence of active and/or sham sessions for each treatment day is assigned a random code that is entered into the TMS system by the coordinator to maintain the integrity of the blind.

Dose Step 5 - 48 Active Accelerated iTBS Sessions

Participant will receive 8/10 active sessions and 2/10 sham sessions per day for a total of 48 active sessions (28,800 active pulses).

Group Type: EXPERIMENTAL

Accelerated iTBS

Intervention Type: DEVICE

The investigators will treat participants with accelerated intermittent theta burst stimulation. iTBS will be delivered via a MagVenture MagPro TMS System with a Cool-B65 coil, targeting to direct the stimulation to the left dorsolateral prefrontal cortex (l-dlPFC). The investigators will use a standard resting motor threshold (rMT) determination to determine the TMS dose. Treatment will be delivered at 120% of the motor threshold. Total treatment time will be controlled; all participants will perceive receiving active treatment for 10 3-min sessions with 10-15 min inter-session intervals, resulting in a 3-hour treatment day. At pre-treatment, a focal electrical sham will be individually titrated to participant tolerability. Participants then receive an individualized level of sham stimulation throughout treatment, to bolster the blind. Participants will be told that they will be receiving different doses throughout the treatment day, again to maintain the integrity of the blind.

Sham Comparator

Intervention Type: DEVICE

To achieve adequate blinding, participants will go through the same number of sessions per day irrespective of the active and/or sham dose-step combination to which they are assigned. Sham sessions will be assigned in random order over the 10 sessions. The sequence of active and/or sham sessions for each treatment day is assigned a random code that is entered into the TMS system by the coordinator to maintain the integrity of the blind.

Dose Step 6 - 60 Active Accelerated iTBS Sessions

Participant will receive 10/10 active sessions and 0/10 sham sessions per day for a total of 60 active sessions (36,000 active pulses).

Group Type: EXPERIMENTAL

Accelerated iTBS

Intervention Type: DEVICE

The investigators will treat participants with accelerated intermittent theta burst stimulation. iTBS will be delivered via a MagVenture MagPro TMS System with a Cool-B65 coil, targeting to direct the stimulation to the left dorsolateral prefrontal cortex (l-dlPFC). The investigators will use a standard resting motor threshold (rMT) determination to determine the TMS dose. Treatment will be delivered at 120% of the motor threshold. Total treatment time will be controlled; all participants will perceive receiving active treatment for 10 3-min sessions with 10-15 min inter-session intervals, resulting in a 3-hour treatment day. At pre-treatment, a focal electrical sham will be individually titrated to participant tolerability. Participants then receive an individualized level of sham stimulation throughout treatment, to bolster the blind. Participants will be told that they will be receiving different doses throughout the treatment day, again to maintain the integrity of the blind.

Interventions

Accelerated iTBS

The investigators will treat participants with accelerated intermittent theta burst stimulation. iTBS will be delivered via a MagVenture MagPro TMS System with a Cool-B65 coil, targeting to direct the stimulation to the left dorsolateral prefrontal cortex (l-dlPFC). The investigators will use a standard resting motor threshold (rMT) determination to determine the TMS dose. Treatment will be delivered at 120% of the motor threshold. Total treatment time will be controlled; all participants will perceive receiving active treatment for 10 3-min sessions with 10-15 min inter-session intervals, resulting in a 3-hour treatment day. At pre-treatment, a focal electrical sham will be individually titrated to participant tolerability. Participants then receive an individualized level of sham stimulation throughout treatment, to bolster the blind. Participants will be told that they will be receiving different doses throughout the treatment day, again to maintain the integrity of the blind.

Intervention Type: DEVICE

Sham Comparator

To achieve adequate blinding, participants will go through the same number of sessions per day irrespective of the active and/or sham dose-step combination to which they are assigned. Sham sessions will be assigned in random order over the 10 sessions. The sequence of active and/or sham sessions for each treatment day is assigned a random code that is entered into the TMS system by the coordinator to maintain the integrity of the blind.

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

i. Age 60-85 (inclusive). ii. English as a first/primary language. iii. Adequate sensorimotor function and verbal expressive abilities to complete all assessments.

iv. Must have a Co-Participant (e.g. spouse, adult child or relative, sibling, cohabitator, friend, caregiver) who has at least weekly in-person contact with the participant and is willing to participate in the study as a collateral informant.

v. Is on fixed pharmacotherapy (i.e. a stable dose of medication/s) for at least 4 weeks prior to enrollment. Cholinesterase inhibitors, NMDA receptor antagonists, and antidepressants are allowed if on a stable regimen for at least 4 weeks prior to enrollment vi. A documented diagnosis of MCI per NIA-AA criteria or Mild Neurocognitive Disorder per DSM-5 criteria by a healthcare provider within the past 2 years, with a presumed etiology of either (or both): vi.a Possible or probable AD vi.b Chronic cerebrovascular disease (CVD), specifically small vessel disease as defined in STRIVE-2 which includes small subcortical infarcts, lacunes, white matter hyperintensities, perivascular spaces, cerebral micro bleeds, cortical superficial siderosis, or cortical cerebral microinfarcts. .

vii. Met actuarial neuropsychological criteria for MCI within the past 2 years (i.e. ≥2 impaired scores within one cognitive domain, or ≥1 impaired scores in ≥3 domains, where an impaired score is defined as ≤16th percentile using appropriate demographically-corrected norms).

viii. Major Depressive Disorder of at least mild severity per DSM-5 and a HAM-D Total ≥ 8.

Exclusion Criteria

i. A TICS score of ≤ 19 suggestive of dementia. ii. Prior diagnosis of Dementia (NIA-AA) or Major Neurocognitive Disorder (DSM-5).

iii. Daily/weekly anticholinergic or sedative use. Stimulants may be allowed pending investigator review.

iv. History of significant or unstable condition/s or treatments for these condition/s that may impact cognition (as determined by the study investigators) such as significant cardiac (e.g. heart failure), infectious (e.g. HIV, urinary tract infection), or metabolic disease (e.g. labile diabetes), cancer (e.g. brain cancer, chemotherapy-induced cognitive impairment), developmental disorder (e.g. autism spectrum disorder, intellectual disability), or other neurologic disease (e.g. movement disorder, multiple sclerosis, moderate to severe brain injury, seizures).

v. Past or current treatment for AD/MCI with monoclonal antibody therapy or plan to initiate treatment within three months of enrollment.

vi. Current use of any implanted brain stimulation device. vii. Enrolled in a clinical trial or has received an investigational medication or device in the last 30 days.

viii. MRI contraindications (e.g., ferromagnetic implants, claustrophobia) ix. TMS contraindications (e.g., ferromagnetic implants, conditions or treatments that lower seizure threshold, taking medications that have short half-lives, no identifiable motor threshold).

x. Current alcohol or substance use disorder, bipolar disorder, schizophrenia spectrum or other psychotic disorder, suicidal/homicidal intent within the past month, or any suicide attempts within the past year.

• Minimum Eligible Age: 60 Years
• Maximum Eligible Age: 85 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National Institute on Aging (NIA)

NIH

Sponsor Role: collaborator

Medical University of South Carolina

OTHER

Sponsor Role: lead

Responsible Party

Andreana Benitez

Associate Professor-Faculty

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Andreana Benitez, PhD

Role: PRINCIPAL_INVESTIGATOR

Medical University of South Carolina

Lisa McTeague

Role: PRINCIPAL_INVESTIGATOR

Medical University of South Carolina

Locations

Medical University of South Carolina

Charleston, South Carolina, United States

Site Status: RECRUITING

Countries

United States

Central Contacts

Andreana Benitez, PhD

Role: CONTACT

benitez@musc.edu

843-876-2479

Katrina Madden, MBA

Role: CONTACT

maddenka@musc.edu

843-792-9186

Facility Contacts

Katrina Madden

Role: primary

PUSHstudy@musc.edu

843-792-9186

Other Identifiers

R01AG081237

Identifier Type: NIH

Identifier Source: secondary_id

View Link

Pro00127160

Identifier Type: -

Identifier Source: org_study_id