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Novel Missense Mutation in Charged Multivesicular Body Protein 2B in... » Isaúde
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Alzheimer Disease and Associated Disorders
2010-10-01 00:00:00

Novel Missense Mutation in Charged Multivesicular Body Protein 2B in a Patient With Frontotemporal Dementia

Descrição: Frontotemporal dementia (FTD) is the second major cause of dementia in persons below the age of 65 years after Alzheimer disease. FTD is clinically, pathologically, and genetically heterogeneous and has been associated with mutations in different genes located on chromosomes 17, 9, and 3. In our study we report a novel heterozygous g.26218G>A variant in exon 6 of charged multivesicular body protein 2B (CHMP2B), predicted to cause the amino acid change p.Ser187Asn, in one patient diagnosed with FTD. We were not able to determine the mode of inheritance of the mutation as we did not have access to the genetically informative family members of the proband; those who were screened did not carry the variant. We did not find this variant in 273 White controls although we did find it in 6 of 94 African-American controls. Most of the mutations in CHMP2B which are considered pathogenic lead to partial deletion of the C-terminus region of CHMP2B protein. Based on previous reports and on our current data, missense mutations in this gene seem unlikely to be pathogenic. The pathogenicity of CHMP2B mutations requires further investigation.

Seção: Case Reports
Volume: 0
Autor: Gong, Gordon; O\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

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