A FDG-PET Study of AGN-242071 Added to Standard-of-Care (Donepezil ± Memantine) for the Treatment of Participants With Mild to Moderate Alzheimer's Disease

AGN-242071 capsules administered once daily to patients receiving donepezil 10 mg with or without memantine as prescribed per standard of care.

Placebo capsules once daily to patients receiving donepezil 10 mg with or without memantine as prescribed per standard of care.

Donepezil 10 mg as prescribed by the physician as per standard of care.

Memantine as prescribed by the physician as per standard of care.