Purpose: To evaluate the effects of AC-1204 on cognition, activities of daily living, quality of life, pharmacokinetic measures, and safety in people with mild to moderate Alzheimer's disease.
Purpose: To assess the efficacy and safety of MK-8931 as a possible treatment for Alzheimer's disease.
Purpose: To assess the safety and tolerability of RG1662 in individuals with Down syndrome.
Purpose: To determine whether intensive blood pressure lowering will reduce the incidence of all-cause dementia, reduce the decline of global cognitive function in key specific domains, and show changes in brain structure.