APOE in the Predisposition to, Protection From, and Prevention of Alzheimer's Disease
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ClinicalTrials.gov Identifier: NCT04994847 |
Recruitment Status :
Recruiting
First Posted : August 6, 2021
Last Update Posted : August 6, 2021
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Condition or disease | Intervention/treatment |
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Alzheimer Disease | Drug: Amyloid and Tau PET |
This study aims to establish, use, and extensively share a comprehensive longitudinal resource of genetic, non-genetic, and cognitive data, brain imaging and fluid biomarker measurements of amyloid-β, tau pathophysiology, neurodegeneration, and inflammation and biological samples to advance the study of cognitively unimpaired older adults at six levels of genetic risk for Alzheimer's disease due to their APOE genotype including understudied APOE2 and APOE4 homozygotes (HMs) at the lowest and highest risk and those APOE4 HMs and heterozygotes (HTs) who remain unimpaired at older ages due to unknown protective factors and spared pathophysiological effects despite their genetic risk.
Each participant will provide blood samples for clinical lab analysis, DNA, RNA, plasma, serum, and peripheral blood mononuclear cells (PBMCs) every 12 months; amyloid and tau PET scans, a nearly one hour battery of MRIs, a lumbar puncture (LP) for the collection of CSF samples, and a comprehensive battery of cognitive, behavioral, risk factor, and other assessments every 24 months. Extracted DNA will be used to characterize the participant's APOE genotype, screen for rare APOE variants that might make them eligible for other studies, and perform whole genome sequencing (WGS) and genome-wide genotyping.
Study Type : | Observational |
Estimated Enrollment : | 300 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | APOE in the Predisposition to, Protection From, and Prevention of Alzheimer's Disease |
Actual Study Start Date : | May 1, 2021 |
Estimated Primary Completion Date : | June 30, 2026 |
Estimated Study Completion Date : | June 30, 2026 |

Group/Cohort | Intervention/treatment |
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APOE Unimpaired Observational Trial
300 participants who are cognitively unimpaired; Yearly procedures: blood draw Every Two Year Procedures: cognitive and clinical assessments, CSF collection, MRI, and Tau and Amyloid PET scans
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Drug: Amyloid and Tau PET
NAV4694 and MK6240 PET scans completed every two years |
- Amyloid PET Scan [ Time Frame: 5 years ]The study will acquire NAV4694, a radiotracer specific to amyloid, PET scans to monitor total amyloid levels in the brain.
- Tau PET Scan [ Time Frame: 5 years ]The study will acquire MK6240, a radiotracer specific to Tau, PET scans to monitor total tau levels in the brain.
- MRI [ Time Frame: 5 years ]The study will acquire 3T MRI to look at brain volume
Biospecimen Retention: Samples With DNA

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Ages Eligible for Study: | 50 Years to 90 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Male or female age 50 to 90 years old in good general health with no diseases expected to interfere with the study.
- Willing to undergo health and cognitive assessments, brain imaging sessions (MRI and PET), and collection and banking of blood with venipuncture and CSF by lumbar puncture for genetic research, biomarker research, and DNA banking.
- Determined to be cognitively unimpaired by PI (mechanisms may include verbal interview, participant or study partner reports or specific scores on cognitive assessments)
Exclusion Criteria:
- Participants with significant health issues or medical diseases that may interfere with participation, including infectious diseases that pose a risk to study personnel.
- For PET or MRI: Female participant who is pregnant, lactating, or of childbearing potential without a negative pregnancy test or being two years postmenopausal or surgically sterile.
- For MRI: Any contraindication for MRI including, but not limited to, pacemaker, aneurysm clips, artificial heart valves, ear implants, metal fragments or foreign objects in the eyes, skin, or body.
- For CSF collection: Medical or surgical contraindication for lumbar puncture (e.g. on anti-coagulant therapy or had prior lumbar spinal surgery).

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04994847
Contact: Jennifer Craig-Muller | 602.839.6538 | jennifer.craig-muller@bannerhealth.com |
United States, Arizona | |
Banner Alzheimer's Institute | Recruiting |
Phoenix, Arizona, United States, 85006 | |
Contact: Katie DeMarco 602-839-2033 Kathryn.DeMarco@bannerhealth.com |
Responsible Party: | Banner Health |
ClinicalTrials.gov Identifier: | NCT04994847 |
Other Study ID Numbers: |
NIH-APOE-R01-001 |
First Posted: | August 6, 2021 Key Record Dates |
Last Update Posted: | August 6, 2021 |
Last Verified: | July 2021 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Alzheimer Disease Disease Susceptibility Dementia Brain Diseases Central Nervous System Diseases Nervous System Diseases |
Tauopathies Neurodegenerative Diseases Neurocognitive Disorders Mental Disorders Disease Attributes Pathologic Processes |