Based on what pathology is behind the bvFTD syndrome generally [4, 5, 8, 50] and the sample size, we very likely have TDP-43 (between 32 and 55% of bvFTD cases, mix of type A/B/C) and tau molecular pathology represented (35–45% of bvFTD cases). The gene discussed is MAPT; the disease is behavioral variant of frontotemporal dementia.