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- 50 to 80 years of age - Diagnosis of prodromal/mild cognitive impairment (MCI) due to Alzheimer¡¯s Disease (AD) or mild AD according to National Institute of Aging-Alzheimer¡¯s Association (NIA-AA) -A global Clinical Dementia Rating (CDR) score of 0.5 to 1.0 and CDR-Memory Box (CDRMB) score ¡Ý0.5 at Screening and Baseline - Score of ¡Ü85 for the delayed recall domain of the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) at Screening - Mini-Mental State Examination (MMSE) score ¡Ý20 at Screening - Participant has an identified informant that has and will maintain sufficient contact (minimum of 5 hours per week) with the participant to be able to provide accurate information on the participant¡¯s cognitive, functional, and emotional states and of the participant¡¯s personal care - At least 6 years of formal education after the age of 5 or work experience to exclude mental deficits other than prodromal or mild AD dementia - Evidence of cerebral A¦Â accumulation by either positive amyloid assessment by either positron emission tomography (PET) scan or cerebrospinal fluid pTau181/A¦Â1-42 ratio assessment