NCT02740634 · RECRUITING
Molecular and Structural Imaging in Alzheimer's Disease: A Longitudinal Study
This study uses two brain scans, PiB for amyloid and AV-1451 for tau, to look at how those proteins build up in people already diagnosed with typical or atypical Alzheimer's. Researchers scan them again after one year to see what changes. It is an imaging study, not a treatment test. Nothing is being given to treat the disease.
You may qualify if
- 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
You're excluded if
- 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)
The sponsor's own eligibility wording, lightly reformatted. The study team makes the final eligibility decision — worth discussing with your doctor.
Eligibility criteria as of 2026-07-17