Clinical trial Recruiting at 1 site Phase1; Phase2 Interventional Ages 50 and up

Using rTMS to enhance thinking in Veterans with Parkinson's disease

Official title: rTMS as a Cognitive Rehabilitation Approach in Veterans With Parkinson's Disease

Run by VA Office of Research and Development · NCT03836950 · Data updated 2026-11-12

This study is testing whether a non-invasive brain treatment called rTMS can help improve thinking skills in Veterans with Parkinson's disease who have mild cognitive issues.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages50 Years and up
SexAll
Enrollment56 (estimated)
SponsorVA Office of Research and Development
Federal
Locations2 sites (Chicago, Illinois and 1 other locations)
StatusRecruiting
StartedApril 1, 2020
Main results expectedMarch 31, 2027
Study endsMarch 30, 2028
Registry record updatedApril 21, 2026
Trial IDNCT03836950 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are Veterans aged 50 and older with a diagnosis of Parkinson's disease or atypical parkinsonism and mild cognitive impairment.

Probably not a fit

Patients with dementia, severe depression, or those who have undergone deep brain stimulation surgery may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the safety and effectiveness of repetitive transcranial magnetic stimulation (rTMS) as a non-invasive treatment for Veterans suffering from Parkinson's disease or atypical parkinsonism with mild cognitive impairment. Participants will be randomly assigned to receive either active rTMS or a sham treatment, and their cognitive functions will be assessed through standardized tests at the beginning, end, and one month after the treatment. The study aims to explore changes in executive function and other cognitive domains, as well as brain connectivity using advanced neuroimaging techniques. By examining these effects, the research seeks to determine the potential of rTMS in improving cognitive outcomes for this population.

Why it matters

Potential benefit: If successful, this treatment could significantly enhance cognitive function and quality of life for Veterans with Parkinson's disease.

How similar studies have gone: While rTMS has shown promise in other cognitive rehabilitation contexts, this specific application in Parkinson's disease with mild cognitive impairment is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Veterans who seek services at Hines VA Hospital or Jesse Brown VA Medical Center
* Diagnosis of PD or atypical parkinsonism as determined by a neurologist
* Meet criteria for having mild cognitive impairment
* Receiving stable (i.e., no changes in medication and medication dose) medication and who are expected to remain on stable medication for the duration of the RCT
* Speak and read English
* 50 years or older

Exclusion Criteria:

* Dementia
* Failure to demonstrate decision making capacity
* History of deep brain stimulation surgery
* Severe depression
* Resting head tremor
* Dyskinesia that will interfere with collecting imaging data
* Has congestive heart failure
* Implanted cardiac pacemaker or defibrillator
* Cochlear implant, nerve stimulator, or intracranial metal clips
* Implanted medical pump
* Increased intracranial pressure
* History of claustrophobia
* Metal in eyes/face, shrapnel/bullet remnants in brain
* Participants at potential increased risk of seizure including those who have the following:

  * history (or family history) of seizure or epilepsy
  * history of stroke, head injury, or unexplained seizures
  * presence of other neurological disease that may be associated with an altered seizure threshold

    * such as CVA, cerebral aneurysm, dementia, increased intracranial pressure
* Concurrent medication use such as tricyclic antidepressants, neuroleptic medications, any other drug known to lower seizure threshold
* Secondary conditions that may significantly alter electrolyte balance or lower seizure threshold
* No quantifiable motor threshold such that rTMS dosage cannot be accurately deter-mined

Where it's running

  • Edward Hines Jr. VA Hospital, Hines, IL
    Hines, Illinois, United States
    Recruiting
  • Jesse Brown VA Medical Center, Chicago, IL
    Chicago, Illinois, United States
    Not yet recruiting

Study contacts

  • Principal investigator: Sandra L. Kletzel, PhD BA — Edward Hines Jr. VA Hospital, Hines, IL
  • Study coordinator: Sandra L Kletzel, PhD BA
  • Email: Sandra.Kletzel@va.gov
  • Phone: (708) 202-5735

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.