In our ongoing study, we aimed to evaluate intra- and inter-network FC changes at rest in patients with MCI, including both positive and negative Aβ deposition groups, after 10 sessions of sequential anodal tDCS application to the left DLPFC, according to individual factors associated to AD such as Aβ deposition, APOE ε4 carrier status, BDNF polymorphism, and sex. This evidence concerns the gene BDNF and Alzheimer disease.