RecruitingPhase 1Drug trialA Master Protocol Studying Multiple Amyloid-Targeting Therapies in Healthy Participants and Participants With Alzheimer's DiseaseThe purpose of this Master Protocol is to support multiple studies looking at safety and tolerability of different drugs in healthy participants and participants with Alzheimer's disease, and if they remove clumps of protein (amyloid plaque) in the brain in participants with Alzheimer's Disease. Participants will enroll into either A1D-MC-AT01 (NCT07787182) or A1D-MC-AT02 (upcoming).