CTAD 2025: Key trends redefining therapeutic and diagnostic strategies in Alzheimer's disease.

This article synthesizes key themes emerging from the CTAD 2025 meeting, highlighting significant advances in Alzheimer's disease (AD) research and clinical practice. New disease-modifying approaches-ranging from next-generation anti-amyloid-β and anti-tau antibodies to small-molecule aggregation inhibitors and gene-based strategies-underscore a growing shift toward multi-target therapeutic frameworks. Blood-based biomarkers, such as p-tau217, p-tau181, glial fibrillary acidic protein, and neurofilament light, are nearing clinical readiness, while digital biomarkers and wearable technologies are enabling remote, continuous assessment of cognitive and physiological functions. Clinical trial design is increasingly oriented toward earlier disease stages and genetically or biomarker-defined high-risk groups, incorporating adaptive methodologies and real-world data to enhance efficiency and generalizability. Collectively, these developments signal an impending transition over the next two to three years from a centralized, cognitive scale-driven model of AD care to a more decentralized, biomarker-guided precision paradigm. CTAD 2025 thus marks a pivotal inflection point in the evolving structure of AD diagnosis and treatment.