Tau Imaging in Subjects With Progressive Supranuclear Palsy, Corticobasal Degeneration and Healthy Volunteers

18F-AV-1451 Injection for Brain Imaging of Tau in Subjects With Progressive Supranuclear Palsy (PSP), Subjects With Corticobasal Degeneration (CBD) and Healthy Volunteers

This study will evaluate flortaucipir for brain imaging of tau in subjects with progressive supranuclear palsy (PSP), corticobasal degeneration (CBD) and healthy volunteers.

Inclusion Criteria:

Cognitively Healthy Volunteers

• Mini-mental state examination (MMSE) ≥ 28
• No history of cognitive decline or parkinsonian motor disorder

CBD and PSP subjects

• Able to walk 10 steps with minimal assistance
• MMSE ≥ 14 and ≤ 30
• Subject has a reliable study partner who agrees to accompany subject to visits and spends at least 5 hours per week with the subject

PSP subjects only

• Meet National Institute of Neurological Disorders and Stroke - Society for Progressive Supranuclear Palsy (NINDS-SPSP) probable or possible PSP criteria as modified for the Neuroprotection and Natural History Parkinson Plus Syndromes (NNIPPS) clinical trial

CBD subjects only

• Meets 2013 consensus criteria for possible or probable corticobasal degeneration, corticobasal syndrome (CBS) subtype

Exclusion Criteria:

All subjects

• Have evidence of structural abnormalities such as vascular disease, large strokes or severe white matter disease or other mass lesion on screening MRI
• Claustrophobia
• Current clinically significant cardiovascular disease or clinically significant abnormalities on screening electrocardiogram (e.g. corrected QT interval >450 msec)
• Have a history of risk factors for Torsades de Pointes (e.g. heart failure, hypokalemia, family history of long QT syndrome)
• Have a current clinically significant infectious disease, endocrine or metabolic disease, pulmonary, renal or hepatic impairment, or cancer
• Females of childbearing potential who are not surgically sterile, not refraining from sexual activity or not using reliable methods of contraception
• Have received or participated in a trial with investigational medications in the past 30 days
• Have had a non-study related radiopharmaceutical imaging or treatment procedure within 7 days prior to the study imaging session
• Have a history of neuroleptic use for a prolonged period of time or within the past 6 months

PSP and CBD subjects

• Have evidence of amyloid deposition
• Meet National Institute on Aging-Alzheimer's Association criteria for probable Alzheimer's Disease
• Have any other neurological condition other than CBS or PSP that could account for cognitive or motor deficits
• Serum or plasma progranulin level less than one standard deviation below the normal subject mean for the laboratory performing the assay
• Have a high-risk family history suggestive of tar DNA binding protein (TDP)-43 pathology or known mutations