Association between synapsin III gene promoter SNPs and multiple sclerosis in Basque patients

Background Synapsins are a family of neuron-specific phosphoproteins, one of whose subunits is encoded by the SYN3 gene. This gene is located close to one of the multiple sclerosis susceptibility regions (in 22q13.1). Two single-nucleotide polymorphisms (SNPs) (rs133945 and rs133946) in the promoter...

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Veröffentlicht in:Multiple sclerosis 2009-01, Vol.15 (1), p.124-128
Hauptverfasser: Otaegui, D, Zuriarrain, O, Castillo-Triviño, T, Aransay, AM, Ruíz-Martinez, J, Olaskoaga, J, Marti-Masso, JF, Lopez de Munain, A
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Sprache:eng
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Zusammenfassung:Background Synapsins are a family of neuron-specific phosphoproteins, one of whose subunits is encoded by the SYN3 gene. This gene is located close to one of the multiple sclerosis susceptibility regions (in 22q13.1). Two single-nucleotide polymorphisms (SNPs) (rs133945 and rs133946) in the promoter region of this gene have been proposed as factors protecting against MS. This relationship is not clear because another report failed to found such association. Objectives In an attempt to clarify this association, the frequency of these SNPs was analyzed in a population of 221 Spanish MS patients with a cluster of 72 Basque patients and in 373 controls with a cluster of 138 controls of a Basque origin. Methods The SNis analysis was performed by 9 PCR. Results According to our findings, these SNPs are differently distributed in the two populations. This significant bias should therefore be taken into account in association studies. Our data suggest that the C/C genotype in rs133946 and the G/G genotype in rs133945 could be protecting factors against MS in the Basque population.
ISSN:1352-4585
1477-0970
DOI:10.1177/1352458508096682