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Golli-MBP gene in multiple sclerosis susceptibility

P J Tienari1, S Kuokkanen, T Pastinen

  • 1Department of Human Molecular Genetics, National Public Health Institute, Helsinki, Finland. pentti.tienari@helsinki.fi

Journal of Neuroimmunology
|April 1, 1998
PubMed

Insights

Researchers identified a specific DNA region within the Golli-myelin basic protein (MBP) gene linked to multiple sclerosis (MS) susceptibility in Finnish and Swedish populations. This finding narrows down the search for genetic mutations contributing to MS.

Area of Science:

  • Genetics
  • Neuroimmunology
  • Human Disease

Background:

  • Multiple sclerosis (MS) is a complex neurological disorder with suspected genetic underpinnings.
  • Previous studies suggested a link between MS and the myelin basic protein (MBP) gene locus in the Finnish population.
  • Specific susceptibility genes for MS have remained elusive.

Purpose of the Study:

  • To investigate nucleotide variations within the Golli-myelin basic protein (MBP) gene.
  • To perform association analyses to identify genetic markers linked to MS susceptibility.
  • To refine the candidate region for MS predisposing mutations within the Golli-MBP gene.

Main Methods:

  • Screening of the Golli-MBP gene for nucleotide variations.
  • Multipoint association analyses in Finnish case-control data.
  • Analysis of an independent dataset of 151 MS families from Finland and Sweden.
  • Haplotype analyses to differentiate predisposing and non-predisposing alleles.

Main Results:

  • Association found between MS and alleles within a 1.27 kb range at a (TGGA)n tetranucleotide repeat element, located upstream of MBP exon 1.
  • These associations were consistent in both Finnish and Scandinavian datasets.
  • Haplotype analyses indicated a specific 20-25 kb segment within the Golli-MBP gene is conserved in predisposing haplotypes.

Conclusions:

  • The Golli-myelin basic protein (MBP) locus plays a role in multiple sclerosis susceptibility, particularly in a subset of patients.
  • The study identifies a refined candidate region for MS predisposing mutations within the Golli-MBP gene.
  • These findings provide a basis for targeted efforts to discover specific predisposing mutations for MS.

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