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A prepro-orexin gene polymorphism is associated with narcolepsy.

M Gencik1, N Dahmen, S Wieczorek

  • 1Department of Molecular Human Genetics, Ruhr-University, Bochum, Germany. martin.gencik@ruhr-uni-bochum.de

Neurology
|January 10, 2001
PubMed
Summary

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Researchers investigated the orexin (hypocretin) gene

Area of Science:

  • Neuroscience
  • Genetics
  • Sleep Medicine

Background:

  • The orexin (hypocretin) system is implicated in narcolepsy pathogenesis.
  • Reduced orexin A levels are observed in narcoleptic patients' cerebrospinal fluid (CSF).

Purpose of the Study:

  • To investigate the genetic contribution of the orexin system to narcolepsy etiology.
  • To screen the prepro-orexin gene for mutations and polymorphisms in narcolepsy patients.

Main Methods:

  • Screening of the entire prepro-orexin gene in 133 narcolepsy patients.
  • Association study of gene variants with narcolepsy in a larger cohort of 178 patients.

Main Results:

  • A rare polymorphism in the prepro-orexin gene was identified.

Related Experiment Videos

  • This polymorphism showed an association with narcolepsy in the studied cohort.

    • Conclusions:

    • Genetic variations in the prepro-orexin gene may contribute to narcolepsy.
    • Further research is warranted to elucidate the role of orexin gene polymorphisms in narcolepsy.