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Investigating biomarkers related to Alzheimer's disease and cognitive impairment

Development of a Database to Investigate Digital and Blood-Based Biomarkers and Their Relationship to Tau and Amyloid PET Imaging in Older Participants Who Are Cognitively Normal (CN), Have Mild Cognitive Impairment (MCI), or Have Mild-to-Moderate AD Dementia

Observational GAP Innovations, PBC · NCT06584357

This study is trying to see how blood tests and brain scans relate to Alzheimer's disease and memory issues in older adults aged 60 to 90.

Quick facts

Study typeObservational
Enrollment1200 (estimated)
Ages60 Years to 90 Years
SexAll
SponsorGAP Innovations, PBC Industry-sponsored
Drugs / interventionsradiation
Locations26 sites (Atlantis, Florida and 25 other locations)
Trial IDNCT06584357 on ClinicalTrials.gov

What this trial studies

This observational study aims to develop a comprehensive database that includes digital and blood-based biomarkers, as well as brain imaging data from PET scans, to explore their relationships with tau and amyloid pathology in older adults. Participants aged 60 to 90, who are cognitively normal, have mild cognitive impairment, or mild-to-moderate Alzheimer's disease, will undergo various assessments including blood tests and MRI scans. The goal is to identify meaningful correlations between these biomarkers and brain imaging results, which could enhance understanding of Alzheimer's disease progression.

Who should consider this trial

Good fit: Ideal candidates for this study are older adults aged 60 to 90 who are cognitively normal, have mild cognitive impairment, or have mild-to-moderate Alzheimer's disease.

Not a fit: Patients with severe cognitive impairment or those outside the specified age range may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved diagnostic tools and treatment strategies for Alzheimer's disease and related cognitive disorders.

How similar studies have performed: Other studies have shown promise in using biomarkers and imaging techniques to understand Alzheimer's disease, indicating that this approach is supported by previous research.

Eligibility criteria

Show full inclusion / exclusion criteria 
Inclusion Criteria:

Pre-screening Inclusion Criteria

Participants must meet ALL of the following criteria to progress to Visit 1 (Screening):

1. Participant is between 60 to 90 years of age (inclusive) at the time of consent; and
2. Participant has a study partner who has sufficient and frequent contact with the participant (defined as at least 8 hours of contact a week) and is able to provide accurate information regarding the participant's cognitive and functional abilities.

Core Study Inclusion Criteria

Participants must meet ALL of the following criteria, in addition to the Pre-screening Inclusion Criteria, for entry into the study:

1. Participants must provide written consent in the IRB-approved or Ethics Committee (EC) approved informed consent form or have a legally authorized representative (LAR) provide written consent on the participant's behalf in accordance with local and national guidance and regulation;
2. Participants must be willing to undergo an MRI brain scan within 90 days and an amyloid and tau PET scan within 120 days of signing informed consent;
3. Participants must be willing to comply with all study procedures as outlined in the informed consent, including blood sampling, genetic testing, and storage of biospecimens for future research;
4. Fluency in the language of the tests used at the study site;
5. Participants must be willing to be contacted for possible participation in clinical research trials once their participation in this study ends; and
6. Participants must have a Mini-Mental State Exam (MMSE) score of 16 to 30 inclusive at screening.

Exclusion Criteria:

Pre-screening Exclusion Criteria

Participants who meet ANY of the following criteria will not be eligible to progress to Visit 1 (Screening):

1. Participant is unable to undergo amyloid and tau PET scans due to self-reported pregnancy, sensitivity to ligands being used, poor venous access, contraindication to PET, or planned or recent exposure to ionizing radiation that in combination with the planned administration of amyloid radioligand would result in a cumulative exposure that exceeds recommended local guidelines;
2. Participants who have reported or have a known negative amyloid PET scan in the past 6 months;
3. Participants with any known contraindication to brain MRI scan;
4. Participants with history of stroke or seizures within 1 year of the Pre-Screening Visit;
5. Participants with history of cancer within the past 5 years with the exception of non-melanoma skin cancer or prostate cancer in situ;
6. Participants with known or suspected alcohol or drug abuse or dependence within 1 year of the Pre- Screening Visit;
7. Participants who report any current unstable psychiatric symptoms that could interfere with study procedures or impact study data (e.g., uncontrolled depression);
8. Participants who have received any potential disease modifying AD treatment within 6 months prior to the Pre-screening Visit; and
9. Participants with known history or self-report to be Human Immunodeficiency Virus (HIV) Positive unless controlled by antiviral medication.

Core Study Exclusion Criteria

Participants who meet ANY of the following criteria, in addition to the Pre-screening Exclusion Criteria, will not be eligible to enroll into the study:

1. Participants who, in the opinion of the Site Principal Investigator, have serious or unstable medical conditions that would prohibit their completion of all study procedures and data collection;
2. Participants who have serious or unstable medical conditions that would likely preclude their participation in an interventional research trial;
3. Participants with self-reported, untreated conditions such as vitamin B12 or folate deficiency or bladder infections that in the opinion of the Site Principal Investigator could contribute to cognitive impairment;
4. Participants who have completed cognitive testing within 1 month of Visit 1 (Screening) where the Site Principal Investigator believes the participant's exposure may cause practice effect;
5. Participants who have any neurological disorder affecting the central nervous system, other than AD, that may be contributing to cognitive impairment (e.g., Parkinson's disease, other dementias, multiple concussions or seizures) as deemed significant by the Site Principal Investigator;
6. Participants with a Geriatric Depression Scale (GDS) score greater than or equal to 8 at Visit 1 (Screening) and is deemed to be clinically significantly depressed by the Site Principal Investigator;
7. Participants with a Rey Auditory Verbal Learning Test (RAVLT) t-score of ≥ 1.2 standard deviation above the mean. For non-African Americans, calculate age-sex-education adjusted t-scores. For African American participants, use the MOANS to calculate the age-education adjusted t-scores;
8. Participants weighing less than 110 pounds;
9. Participants who are direct employees or family members of direct employees of the participating investigators' sites;
10. Participants who are direct employees of the Sponsor;
11. Participants who, in the opinion of the investigator, are unable to complete cognitive testing due to inadequate visual or auditory acuity; and
12. For participants completing the RetiSpec retinal scan: Those with a known history of contraindication or allergy to Tropicamide 1% (pupil dilation drop).

Longitudinal Sub-Study Eligibility

Inclusion Criteria:

Participants must meet ALL of the following criteria for entry into the sub-study:

1. Participants who completed the Bio-Hermes-002 Core Study;
2. Are willing to complete phone call visits with site staff every three months and return to the clinic for an annual evaluation; and
3. Are willing to complete annual PET scans for both amyloid and tau scans.

Exclusion Criteria:

Participants who meet ANY of the following criteria will not be eligible for entry into the sub-study:

1. Those who are enrolled or intend to enroll into a clinical trial for Alzheimer's disease with a potential disease-modifying intervention;
2. Participants who have serious or unstable medical conditions that would likely preclude their participation in an interventional research trial;
3. Those who intend to use medications outside clinical research studies approved by regulatory authorities to modify Alzheimer's disease pathology.

Where this trial is running

Atlantis, Florida and 25 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
View on ClinicalTrials.gov → Find more trials like this →
Conditions Mild Cognitive ImpairmentAlzheimer's DiseaseAlzheimer's Disease, Early OnsetMemory LossMemory DisordersMemory ImpairmentOlder VolunteersHealthy Volunteers
Last reviewed 2026-06-13 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.