Insoluble hyperphosphorylated filamentous tau forms NFTs in AD, and they are present in other diseases known as tauopathies, which includes chronic traumatic encephalopathy, progressive supranuclear palsy, corticobasal degeneration or frontotemporal dementia and parkinsonism linked to chromosome 17 [26, 27]. The gene discussed is MAPT; the disease is tauopathy.