Amyloid Imaging And Safety Study Of ACC-001 In Subjects With Early Alzheimer's Disease

Inclusion Criteria: * Concern about a change in cognition expressed by the subject or by an informant that knows the subject well * Mini-Mental State Examination (MMSE) score ≥ 25 * Global Clinical Dementia Rating = 0.5. * General cognition and functional performance sufficiently preserved such that a diagnosis of Alzheimer's dementia cannot not be made by the site physician at the time of screening. * Amyloid burden detected on screening brain PET scan. * Other inclusion criteria apply. Exclusion Criteria: * Significant neurological disease other than early Alzheimer's disease * Major psychiatric disorder or symptom * Contraindication to undergo brain MRI * Unstable medical conditions * Other exclusion criteria apply