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Cerebrospinal Fluid Clearance in Preclinical Alzheimer's Disease

Start: July 30, 2018
End: June 2022
Enrollment: 136

What Is This Study About?

In a process known as clearance, cerebrospinal fluid carries waste products from the brain to the bloodstream. This study will use positron emission tomography (PET) scanning to examine whether impaired clearance of amyloid protein from the brain causes amyloid to build up in the brain and increase the risk for Alzheimer's disease. Researchers will conduct PET scans with the tracer, [18F]MK-6240, to measure the level of two proteins, amyloid and tau, in the brain. Participants will also undergo a lumbar puncture.

Do I Qualify To Participate in This Study?

Minimum Age: 40 Years

Maximum Age: 85 Years

Must have:

  • English as a first language or proficient in English (score of >11 on the WAIS vocabulary test)
  • Normal cognition (Clinical Dementia Rating = 0, Global Deterioration Scale <2)
  • Good general health

Must NOT have:

  • Uncontrolled high blood pressure or metabolic disease
  • Neurodegenerative disorders (i.e., Parkinson's disease, Lewy body dementia, frontotemporal disorders)
  • Dementia or mild cognitive impairment
  • Lifelong major depression; lifelong DSM-IV Axis 1 disorders
  • Mental retardation
  • Substance abuse
  • Prohibited medications:
    • Medications limiting validity of neuropsychological tests or imaging
    • Antidepressants with anticholinergic properties
    • Monoamine oxidase inhibitors 
    • Regular use of narcotic analgesics (more than twice per week)
    • Neuroleptics
    • Alzheimer's medications (Aricept, Exelon, Razadyne, Namenda)
    • Parkinsonian medications (Sinemet, amantadine, bromocriptine, pergolide, selegeline)
    • Participants are not excluded for using over-the-counter memory-enhancing or -protecting medications, such as ginkgo biloba or vitamins
  • Implanted medical devices incompatible with magnetic resonance imaging imaging
  • Heart failure stage D as defined by the American Heart Association
  • Chronic kidney disease in stage 4 or greater as defined by the National Kidney Foundation
  • Brain tumor and other neoplastic disorders outside the brain where disease itself or its treatment (e.g., radiation, chemotherapy) is likely to affect brain structure or function
  • Major stroke
  • Significant head trauma
  • Hydrocephalus
Study Contact
Patrick Harvey

Need Help?

Contact NIA’s Alzheimer’s and related Dementias Education and Referral (ADEAR) Center at 800-438-4380 or email ADEAR.

Where Is This Study Located?

New York
Weill Cornell Medicine
New York, NY 10021
Patrick Harvey

Who Sponsors This Study?

Lead: New York University School of Medicine

Source: ID: NCT03663387