TARDBP mutations in frontotemporal lobar degeneration: frequency, clinical features, and disease course.

Rejuvenation Research
B BorroniA Padovani

Abstract

The 43-kD transactive response (TAR)-DNA-binding protein (TARDBP) mutations have been demonstrated to be causative of sporadic and familial forms of amyotrophic lateral sclerosis. More recently, these mutations have been reported in cases of frontotemporal lobar degeneration (FTLD). The aim of this study was to evaluate the role of TARDBP genetic variations in a large sample of consecutive patients with FTLD. A total of 252 FTLD patients were investigated. Each subject had a clinical and neuropsychological evaluation and a brain imaging study. The clinical diagnosis was confirmed by at least 1 year of follow up. The entire TARDBP gene, the intronic flaking regions, and the 5'-untranslated region (5'-UTR) were screened. Six genetic variations were identified in patients with behavioral variant frontotemporal dementia (FTD) and FTD with motor neuron disease phenotypes. Two of these mutations, namely N267S and M359V, lead to amino acid changes within exon 6. We further identified three genetic variations, i.e., Y214Y, IVS-IV + 45C/T, and 5'-UTR G/A, that could potentially affect the normal splicing process as predicted by in silico analyses. None of these genetic variations was found in healthy age-matched controls. Moreover, we i...Continue Reading

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Methods Mentioned

BETA
genotyping
blood collection
PCR
transgenic

Software Mentioned

RESCU
PMUT
Polyphen
ESE
SPSS
ESEfinder
PESX
- ESE
SNAP
ESEfindr

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