MAPT and Alzheimer disease: Likewise, neuronal death (as measured by fluid or neuroimaging biomarkers) also occurs later than CSF p‐tau changes in the disease continuum. Furthermore, the phosphorylation pattern of tau differs in the brain and CSF of individuals with and without AD (Barthélemy et al, 2019) and dynamically changes during the course of the disease (Barthélemy et al, 2020c).