This study is testing a medicine called **donanemab** for people with early signs of Alzheimer's Disease, but who do not yet have symptoms. Alzheimer's is a disease that affects the brain, leading to memory loss and other problems. The study will include about 800 people and will last for 12 months to check how safe and effective the medicine is. Participants need to have a good memory score and show certain brain changes that suggest early Alzheimer's. They will need someone close to them, like a family member, to help with the study.
- The study lasts for 12 months.
- Participants will have regular check-ups and tests.
- Some people might experience side effects from the medicine.