Preclinical Alzheimer's Disease (PCAD) is a silent, long-term phase of Alzheimer’s biology, detectable only through advanced tests. While it carries risk, not everyone progresses to dementia, and early detection is key for future preventive strategies. The symposium will highlight the earliest stage of the disease, when biological changes such as amyloid plaque buildup and tau tangle formation are already occurring in the brain, but no cognitive symptoms like memory loss or confusion have appea...