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FUS mutations in familial amyotrophic lateral sclerosis in the Netherlands

Groen, E. J. and Es van, M. A. and Vught van, P. W. and Spliet, W.G.M. and Engelen-Lee van, J. and Visser de, M. and Wokke, J. H. and Schelhaas, H. J. and Ophoff, R. A. and Fumoto, K. and Pasterkamp, R.J. and Dooijes, D. and Cuppen, E. and Veldink, J. H. and Berg van den, L. (2010) FUS mutations in familial amyotrophic lateral sclerosis in the Netherlands. Archives of Neurology, 67, 224-30. ISSN 0003-9942.

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OBJECTIVES: To assess the frequency of FUS mutations in 52 probands with familial amyotrophic lateral sclerosis (FALS) and to provide careful documentation of clinical characteristics. DESIGN: FUS mutation analysis was performed using capillary sequencing on all coding regions of the gene in a cohort of patients with FALS. The clinical characteristics of patients carrying FUS mutations were described in detail. SETTING: Three university hospitals in the Netherlands (referral centers for neuromuscular diseases). PATIENTS: Fifty-two probands from unrelated pedigrees with FALS. MAIN OUTCOME MEASURE: FUS mutations. RESULTS: We identified 3 mutations in 4 of 52 probands. We observed 2 previously identified mutations (p.Arg521Cys and p.Arg521His) and 1 novel mutation (p.Ser462Phe). In addition, a p.Gln210His polymorphism was identified in 1 proband and 3 healthy control subjects. Phenotypic analysis demonstrated that patients may lack upper motor neuron signs, which was confirmed at autopsy, and disease survival was short (<36 months for 8 of 10 patients). CONCLUSIONS: We discovered FUS mutations in Dutch patients with FALS and the occurrence of benign variations in the gene. Therefore, caution is warranted when interpreting results in a clinical setting. Although the phenotype associated with FUS mutations is variable, most patients predominantly demonstrate loss of lower motor neurons and have short disease survival.

Item Type:Article
Institutes:Hubrecht Instituut
ID Code:9539
Deposited On:11 Feb 2011 01:00
Last Modified:07 Sep 2011 17:01

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