MAPT and Alzheimer disease: The present findings encourage further investments in future multicentric (harmonized) studies carried out in SMC participants, including a systematic evaluation of AD‐related amyloid and tau pathology, an extended assessment of CR beyond educational attainment, the above and structural (MRI) and neurophysiological (rsEEG) measures, and annual follow‐ups for more than 2 years to track the transition from earlier Alzheimer's pathology to preclinical and prodromal stages of AD.