NCT03860857 · University of California, Irvine
Biomarker Exploration in Aging, Cognition and Neurodegeneration
(BEACoN)
What this study is about
The purpose of this research study is to understand the factors that underlie changes in thinking and memory with increasing age. The investigators will test the usefulness of MRI, PET, and cognitive testing in detecting subtle changes in the brain that precede cognitive decline.
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The purpose of this research study is to understand the factors that underlie changes in thinking and memory with increasing age. The investigators will test the usefulness of MRI, PET, and cognitive testing in detecting subtle changes in the brain that precede cognitive decline. An addendum to this study includes additional PET scans to examine the relationship between tau protein in the brain and cognitive decline. Tau is a protein that is known to form tangles in the areas of the brain important for memory, and these tau tangles are a hallmark of Alzheimer's disease. This sub-study research aims to look at the tau accumulation in the brain using an investigational drug called MK-6240, which is a radio tracer that gets injected prior to a positron emission tomography (PET) scan.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Aged 60 or older;
- Speaks fluent English or Spanish;
- Visual and auditory acuity adequate for neuropsychological and computerized testing;
- Good general health with no disease(s) expected to interfere with the study;
- Willing and able to participate for the duration of the study and in all study procedures including MRI and PET;
- Normal cognition defined as a Clinical Dementia Rating of 0 and a Mini-Mental State Examination score of 25 or higher. FAST Stage 1 or 2.
- Subjective memory or other cognitive complaints will be included.
Exclusion criteria
- Significant co-morbid neurologic disease such as Parkinson's disease, multiple sclerosis, brain cyst, tumor or aneurysm;
- Major health conditions, except for Type II diabetes mellitus, hypercholesterolemia, and hypertension, which are NOT exclusionary for this study given their high prevalence in our target populations;
- Significant psychiatric disorders such as schizophrenia, bipolar disorder, or attention-deficit hyperactivity disorder, except for depression and anxiety, which are NOT exclusionary for this study given their high prevalence in our target populations;
- Existing diagnosis of dementia or mild cognitive impairment;
- Alcohol or substance abuse or dependence within the past 2 years (DSM-IV criteria);
- MRI contraindications, e.g. pacemakers, aneurysm clips, artificial heart valves, ear implants, metal fragments or foreign objects in the eyes, skin or body. Females who are pregnant or trying to get pregnant are also excluded;
- PET contraindications, e.g. significant prior radiation exposure and pregnancy.
Where
- Irvine, California
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jan 23, 2026 · Source of record for eligibility and locations