MAPT and tauopathy: A common hallmark of tauopathies (such as AD and a major subset of FTLD termed FTLD‐tau) is the pathological intracellular accumulation of the microtubule‐associated protein tau in brain regions that are involved in learning and memory, such as the amygdala and the hippocampus (Goedert & Spillantini, 2006).