Locus-coeruleus Function in Normal Elderly and AD Risk
Public ClinicalTrials.gov record NCT04403165. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Growing evidence suggests that Alzheimer's disease (AD) pathological changes begin decades before clinical symptoms and tau abnormalities in the locus coeruleus (LC) can be observed since midlife. We have previously demonstrated functional vulnerability of the LC to aging and stress, as well as an association between higher cerebrospinal fluid (CSF) tau and impaired sleep phenomena influenced by the LC. We now aim to test whether LC dysfunction can be measured in preclinical AD stages by LC targeted imaging, and whether it objectively affects sleep architecture and attention. We will test this hypothesis in 30 cognitively normal older adults by performing a full clinical evaluation, one night of polysomnography, a lumbar puncture to obtain cerebrospinal fluid, \[11C\]MRB PET-MR, and attention testing. This study has the potential to identify a new mechanism by which tau pathology contributes to sleep and attention dysfunction and may provide a new therapeutic target for AD prevention.
Study identification
- NCT ID
- NCT04403165
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 30 participants
Conditions and interventions
Conditions
Interventions
- Nocturnal polysomnography (NPSG) Procedure
- Lumbar Puncture (LP) Procedure
- PET-MR measurement with a norepinephrine transporter (NET)-selective radiotracer (S,S)-[11C]Omethylreboxetine ([11C]MRB) Other
- Psychomotor Vigilance Task (PVT) Behavioral
Procedure · Other · Behavioral
Eligibility (public fields only)
- Age range
- 55 Years to 75 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 5, 2020
- Primary completion
- Mar 25, 2024
- Completion
- Mar 25, 2024
- Last update posted
- May 27, 2026
2020 – 2024
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| NYU Grossman School of Medicine | New York | New York | 10016 | — |
| Icahn School of Medicine Mount Sinai | New York | New York | 10029 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04403165, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 27, 2026 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04403165 live on ClinicalTrials.gov.