Finally, since differences in neuroimaging profiles for the identified genetic mutation (C9orf72 vs. GRN) have been identified in bvFTD (135, 136), further studies should also consider genetic risk variants in relation to neuroanatomical and clinical features that converge between EO-OABD and bvFTD, which may allow deepening our understanding of their shared underlying mechanisms. Here, C9orf72 is linked to behavioral variant of frontotemporal dementia.