Alternative titles and symbols : Frontotemporal dementia, chromosome 3-linked; Amyotrophic lateral sclerosis 17; FTD3; ALS17; Amyotrophic lateral sclerosis, chmp2b-related;
Description : A substantial minority of degenerative dementias, perhaps 10%, lack the distinctive
pathologic features that allow subclassification as Alzheimer disease (see 104300)
or other forms of dementia. In perhaps half of these cases of nonspecific dementia,
there is a positive family history of dementia, with an apparent autosomal dominant
mode of inheritance. See also frontotemporal lobe dementia (FLDEM; 600274), which
maps to chromosome 17 and is caused by mutation in the microtubule-associated protein
tau gene (MAPT; 157140).;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the chromatin-modifying protein 2B (CHMP2B, 609512.0001);