NCT02740634 · Mayo Clinic
Molecular and Structural Imaging in Alzheimer's Disease: A Longitudinal Study
What this study is about
This is a neuroimaging study designed to learn more about amyloid and tau burden in the brain of patients with typical and atypical Alzheimer's Disease and how burden may change over a one year period.
View original scientific description
This is a neuroimaging study designed to learn more about amyloid and tau burden in the brain of patients with typical and atypical Alzheimer's Disease and how burden may change over a one year period.
Interventions
DRUG
F-18 AV 1451
Tau binding agent
DRUG
C-11 PiB
Amyloid binding agent
Primary outcome measures
Amount of Amyloid protein in the brain of patients with Logopenic Aphasia (LPA) or Posterior Cortical Atrophy (PCA).
Time frame: 5 years
Amount of Tau protein in the brain of patients with Logopenic Aphasia (LPA) or Posterior Cortical Atrophy (PCA).
Time frame: 5 years
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
- Over the age of 21
- Must have an informant who will be able to provide independent evaluation of functioning
- English is primary language
- All subjects must have insidious onset, report progression of their symptoms, and meet current clinical diagnostic criteria for typical amnestic AD or an atypical AD syndrome such as Logopenic Aphasia (LPA) or Posterior Cortical Atrophy (PCA).
- All subjects with Logopenic Aphasia (LPA) must present with early and dominant impairments in language
- All subjects with typical amnestic AD must have relative preservation of episodic memory compared to impairment in the non-episodic memory domain
Exclusion criteria
- If you have had a stroke or tumor that could explain your symptoms
- Subjects that present with early episodic memory impairment or meet clinical criteria for mild cognitive impairment will not be recruited into the study
- Subjects that meet specific criteria for another neurodegenerative disorder, including behavioral variant frontotemporal dementia, semantic dementia, primary progressive apraxia of speech, probable corticobasal syndrome, or progressive supranuclear palsy, will be excluded
- Subjects will be excluded if they have poor vision (20/400)
- Women that are pregnant or post-partum and breast-feeding will be excluded
- Subjects will be excluded from the study if they are unable to undergo the tau-PET scan due to a prolonged QT interval on ECG, or if they have any of the following genetic conditions which can increase the chance of cancer: Cowden disease, Lynch syndrome, hypogammaglobulinemia, Wiskott-Aldrich syndrome, and Down's syndrome
- Subjects will also be excluded if MRI is contraindicated (metal in head, cardiac pace maker, e.t.c.), if there is severe claustrophobia, if there are conditions that may confound brain imaging studies (e.g. structural abnormalities, including subdural hematoma or intracranial neoplasm), or if they are medically unstable or are on medications that might affect brain structure or metabolism,(e.g. chemotherapy)
Where
- Rochester, Minnesota
Collaborators
National Institute on Aging (NIA)
Related conditions & keywords
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 Jul 17, 2026 · Source of record for eligibility and locations