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Neuromuscul Disord. 2007 Dec;17(11-12):964-7. Epub 2007 Jul 24.

Ciliary neurotrophic factor null alleles are not a risk factor for Charcot-Marie-Tooth disease, hereditary neuropathy with pressure palsies and amyotrophic lateral sclerosis.

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  • 1Rudolf Magnus Institute of Neuroscience, Department of Neurology, University Medical Center Utrecht, Utrecht, The Netherlands.

Abstract

Growth factors, such as ciliary neurotrophic factor (CNTF), have been implicated in neuronal survival and proliferation. About 2% of the human population is homozygous for a polymorphism that induces truncated and biologically inactive CNTF but does not obviously change the phenotype. In a population of patients with hereditary neuropathy, a higher rate of the CNTF null mutation would indicate greater susceptibility for clinically significant disease, and a recent report attributes early onset and rapid deterioration in a case of familial ALS (FALS) to this mutation. We have, therefore, genotyped the CNTF polymorphism in a large group of patients with CMT 1a, HNPP, sporadic ALS, in one pedigree with FALS, and controls. All groups exhibited a similar distribution of the polymorphism. We conclude that absence of CNTF does not increase susceptibility for these disorders and confirm that it does not affect onset and course of familial and sporadic ALS.

PMID:
17651970
[PubMed - indexed for MEDLINE]
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