Clinical trial Recruiting at 1 site Interventional Ages 55 to 95

Using near-infrared light to help brain blood flow and thinking in people with mild cognitive impairment

Official title: Neurovascular and Mitochondrial Mechanisms of Transcranial Photobiomodulation in Vascular Mild Cognitive Impairment

Run by University of Oklahoma · NCT07651787 · Data updated 2026-11-12

This trial tests whether daily 20-minute transcranial photobiomodulation with near-infrared light can improve brain blood flow regulation and memory in people with mild cognitive impairment.

Quick facts

Study typeInterventional
Ages55 Years to 95 Years
SexAll
Enrollment40 (estimated)
SponsorUniversity of Oklahoma
Academic / other
Locations1 site (Oklahoma City, Oklahoma)
StatusRecruiting
StartedOctober 1, 2025
Main results expectedDecember 31, 2026
Study endsDecember 31, 2026
Registry record updatedJune 16, 2026
Trial IDNCT07651787 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 55-95 with MCI and evidence of cerebrovascular pathology who can complete the assessments and speak English.

Probably not a fit

Participants without measurable improvements in brain hemodynamics or cognition may not experience benefit.

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

What this trial studies

In this study, participants with mild cognitive impairment will be randomly assigned to active tPBM or sham treatment using the Vielight Neuro RX-Duo device for 20 minutes daily. The goal is to see if the light therapy improves cognitive function and cerebral hemodynamic responses during memory and motor tasks, and whether it reduces markers of oxidative stress and inflammation. Researchers will also explore whether cognitive gains relate to amyloid status and brain inflammation. The trial compares active stimulation to a sham control to determine if observed effects are due to the treatment rather than placebo. Overall, the study focuses on neurovascular coupling as a mechanism and a potential therapeutic target in vascular-related cognitive decline.

Why it matters

Potential benefit: If successful, participants may experience improvements in brain blood flow regulation and cognitive performance.

How similar studies have gone: Prior research on similar photobiomodulation approaches has shown signal in neurological conditions, but results in MCI are still emerging and further validation is needed.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age: 55-95 years of age
* Clinical Dementia Rating (CDR) equal to 0.5 and/or Montreal Cognitive Assessment (MoCA) \<26 and ≥19
* Adequate hearing and visual acuity to participate in the examinations
* English speaker
* Presence of cerebrovascular pathology confirmed by structural brain imaging method

Exclusion Criteria:

* Active CNS disease including multiple sclerosis, uncontrolled seizures, active brain cancer
* Cerebrovascular accident other than TIA within 60 days prior to Visit 0
* Diagnosis of amyloid angiopathy
* Major psychiatric disease, including major depression not controlled on medications, alcohol or drug abuse
* Neurodegenerative diseases, e.g: Parkinson's, any kind of dementia
* Patients currently using commercial brain stimulation / neuromodulation device as part of a research study
* Patients currently take dietary supplements with an expected cerebrovascular benefit such as NAD- or NR-supplementum, L-citrullin, urolithin
* Unstable medical condition, including uncontrolled diabetes, chronic heart issues, heart failure, chronic obstructive pulmonary disease, hypertension uncontrolled by medication (\>160/100 mmHg)
* Any other medical condition or medication which, in the opinion of investigator, would render the patient too unstable to complete the study protocol
* Severe sensory deficits interfering with the testing

Where it's running

  • University of Oklahoma Health Campus
    Oklahoma City, Oklahoma, United States
    Recruiting

Study contacts

  • Principal investigator: Peter Mukli, MD, PhD — Department of Neurosurgery, University of Oklahoma Health Campus, Oklahoma, USA
  • Study coordinator: Peter Mukli
  • Email: peter-mukli@ou.edu
  • Phone: +1 (405) 271-8001

Similar studies

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

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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.