NCT04482179

Brief Summary

Impaired verbal communication is a cardinal symptom of Alzheimer Disease (AD) and the source of enormous distress and disability. Effective therapies for this deficit are lacking. In light of the emerging literature demonstrating that Transcranial Magnetic Stimulation (TMS) improves general cognition in subjects with Alzheimer Disease (AD), the investigators propose to study the effectiveness of TMS as a therapy for impaired verbal communication. The hypothesis to be tested is that TMS combined with Constraint Induced Language Therapy (CILT) improves verbal communication more than sham TMS and CILT. A second aim is to use state-of-the-art neuroimaging to understand the mechanisms underlying any beneficial effect of the treatment.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
23

participants targeted

Target at P25-P50 for phase_1 alzheimer-disease

Timeline
Completed

Started Feb 2020

Longer than P75 for phase_1 alzheimer-disease

Geographic Reach
1 country

1 active site

Status
completed

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

Study Start

First participant enrolled

February 19, 2020

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

July 17, 2020

Completed
5 days until next milestone

First Posted

Study publicly available on registry

July 22, 2020

Completed
4.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 31, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 31, 2024

Completed
1 year until next milestone

Results Posted

Study results publicly available

September 15, 2025

Completed
Last Updated

September 15, 2025

Status Verified

August 1, 2025

Enrollment Period

4.5 years

First QC Date

July 17, 2020

Results QC Date

August 27, 2025

Last Update Submit

August 27, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in WAB-AQ Score

    The primary outcome measure will be the change in score on the Western Aphasia Battery Aphasia Quotient (WAB-AQ), a score assessing overall aphasia recovery. Scores can range from 0-100, with higher scores representing better outcomes. 0-25 is very severe, 26-50 is severe, 51-75 is moderate, and 76-above is mild. A score of 93 or higher is considered recovered.

    12 weeks post-treatment

Secondary Outcomes (1)

  • Change in Percentage of Items Correct on the PNT

    12 weeks post-treatment

Study Arms (2)

Active TMS

ACTIVE COMPARATOR

There will be 10 TMS sessions over 2 consecutive weeks in which 30 two-second stimulation trains of 10 Hz TMS will be delivered every 30 seconds to the left inferior pars triangularis and to the left posterior superior left temporal gyrus. Each TMS treatment session will be immediately followed by a 60-90 minute session of Constrained Induced Language Therapy (CILT).

Device: Active TMSBehavioral: CILT

Sham TMS

SHAM COMPARATOR

There will be 10 TMS sessions over 2 consecutive weeks in which 30 two-second stimulation trains of 10 Hz sham TMS will be delivered every 30 seconds to the left inferior pars triangularis and to the left posterior superior left temporal gyrus. Sham TMS will be administered with a sham TMS coil that looks and sounds like the active coil but does not generate a magnetic field. Each TMS treatment session will be immediately followed by a 60-90 minute session of Constrained Induced Language Therapy (CILT).

Behavioral: CILTDevice: Sham TMS

Interventions

Active TMS will be delivered at 100% motor threshold

Active TMS
CILTBEHAVIORAL

60-90 minutes of CILT will be administered during each treatment session

Also known as: Constraint Induced Language Therapy
Active TMSSham TMS
Sham TMSDEVICE

Sham TMS will be administered

Sham TMS

Eligibility Criteria

Age60 Years - 85 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • A diagnosis of mild-moderate AD as defined by the National Institute of Aging - Alzheimer's Disease and Related Disorders Association criteria
  • Mild-moderate cognitive impairment, indicated by Mini-Mental Status Exam (MMSE) scores between 23 and 15 inclusive
  • Must be right handed as defined by the Edinburgh Handedness Inventory
  • Must be a native English speaker
  • Must be able to understand the nature of the study, and give informed consent

You may not qualify if:

  • History of stroke
  • History of seizure
  • History of any other significant neurologic disease (e.g., ALS)
  • Significant depression as defined by the Geriatric Depression Scale.
  • Any significant medical disorder that, in the view of the investigators, could threaten the subject's ability to complete the study (e.g., cancer, significant cardiac disease)
  • Any contraindications to TMS, including uncontrolled seizures, previous brain surgery, and history of tinnitus

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Pennsylvania

Philadelphia, Pennsylvania, 19104, United States

Location

Related Publications (47)

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MeSH Terms

Conditions

Alzheimer Disease

Condition Hierarchy (Ancestors)

DementiaBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesTauopathiesNeurodegenerative DiseasesNeurocognitive DisordersMental Disorders

Results Point of Contact

Title
Daniela Sacchetti, MS
Organization
Clinical Research Coordinator

Study Officials

  • H. Branch Coslett, MD

    University of Pennsylvania

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
The individual administering TMS will keep the master file of subject assignments, but all other individuals in contact with the subject or their data will be unaware of group assignment. Participants will not be informed of their assignment to active or sham status.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Participants will be randomized to either TMS or sham TMS in a 2:1 allocation ratio.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

July 17, 2020

First Posted

July 22, 2020

Study Start

February 19, 2020

Primary Completion

August 31, 2024

Study Completion

August 31, 2024

Last Updated

September 15, 2025

Results First Posted

September 15, 2025

Record last verified: 2025-08

Data Sharing

IPD Sharing
Will not share

Locations