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Behavioural variant frontotemporal dementia (bvFTD) is a clinically, genetically and pathologically heterogeneous neurodegenerative disorder caused by FTLD-tau, FTLD-TDP and FTLD-FUS pathologies. Clinically, patients present with behavioural symptoms that may include one or more of disinhibition, apathy/inertia, loss of sympathy/empathy, perseverative, stereotyped and compulsive/ritualistic behaviour or hyperorality/dietary changes. Cognitive deficits, particularly executive dysfunction, are also seen. Neuroanatomically, patients have frontal and/or temporal lobe atrophy on neuroimaging. However, there is currently no clear correlation between the clinical and neuroanatomical phenotype in life and the underlying pathogenetics. With the advent of clinical trials in bvFTD, establishing the underlying pathology accurately during life will become increasingly important. This review therefore investigates current and future biomarkers that may help make a pathological diagnosis in life, i.e. bvFTD-tau, bvFTD-TDP and bvFTD-FUS, including clinical and neuropsychological data, neuroimaging, blood and CSF markers.
Dementia Research Centre, Department of Neurodegenerative Disease, UCL Institute of Neurology, University College London, Queen Square, London, WC1N 3BG, UK, email@example.com.
This article was published in the following journal.
Name: Journal of molecular neuroscience : MN
Frontotemporal dementia (FTD) is a heterogeneous disease both at the clinical, genetic, and pathobiological level. The underlying pathological spectrum (termed FTLD, frontotemporal lobar degeneration)...
Frontotemporal dementia (FTD) is a heterogeneous disorder with distinct clinical phenotypes associated with multiple neuropathologic entities. Presently, the term FTD encompasses clinical disorders th...
Episodic memory disturbance is still considered as an exclusion criterion for behavioral variant frontotemporal dementia (bvFTD), but growing evidence suggests that memory can be impaired.
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Heterogeneous group of neurodegenerative disorders characterized by frontal and temporal lobe atrophy associated with neuronal loss, gliosis, and dementia. Patients exhibit progressive changes in social, behavioral, and/or language function. Multiple subtypes or forms are recognized based on presence or absence of TAU PROTEIN inclusions. FTLD includes three clinical syndromes: FRONTOTEMPORAL DEMENTIA, semantic dementia, and PRIMARY PROGRESSIVE NONFLUENT APHASIA.
The most common clinical form of FRONTOTEMPORAL LOBAR DEGENERATION, this dementia presents with personality and behavioral changes often associated with disinhibition, apathy, and lack of insight.
A form of presenile DEMENTIA characterized by cortical dementia, NEUROFIBRILLARY TANGLES without SENILE PLAQUES, Fahr's type CALCINOSIS, and ATROPHY in frontotemporal or TEMPORAL LOBE.
An imprecise term referring to dementia associated with CEREBROVASCULAR DISORDERS, including CEREBRAL INFARCTION (single or multiple), and conditions associated with chronic BRAIN ISCHEMIA. Diffuse, cortical, and subcortical subtypes have been described. (From Gerontol Geriatr 1998 Feb;31(1):36-44)
A form of frontotemporal lobar degeneration and a progressive form of dementia characterized by motor speech impairment and AGRAMMATISM, with relative sparing of single word comprehension and semantic memory.
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