Nonetheless, the inheritance of the ε4 allele of the Apolipoprotein (APO) E gene, which is associated with both increased Aβ deposition and tau pathology (Shi et al., 2017; Shi et al., 2021), constitutes the strongest genetic risk factor for sporadic AD, determining the age at onset of the disease and strictly influencing its progression (Cerf et al., 2011; Hashimoto et al., 2012; Koffie et al., 2012). Here, MAPT is linked to Alzheimer disease.