The present invention relates to a novel exosome-derived biomarker for diagnosing Alzheimer's disease, a composition for diagnosing Alzheimer's disease comprising the biomarker, a kit for diagnosing Alzheimer's disease comprising the composition, and a method for providing information for diagnosing Alzheimer's disease using the biomarker, composition or kit. By using the biomarker for diagnosing Alzheimer's disease provided in the present invention, the diagnosis rate of Alzheimer's disease can be increased, and accuracy, sensitivity and specificity can be increased through granular diagnosis according to the Alzheimer's progression stage (normal, MCI, and AD), and thus the biomarker will be widely used for the effective diagnosis of Alzheimer's disease, and furthermore in the treatment of Alzheimer's disease.
NOVEL BIOMARKER FOR DIAGNOSIS OF ALZHEIMER'S DISEASE, DISCOVERED FROM BLOOD-DERIVED EXOSOMES, AND METHOD FOR DIAGNOSING ALZHEIMER'S DISEASE USING SAME