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Genetic variants associated with sleep disorders.

Daniel F Kripke1, Lawrence E Kline2, Caroline M Nievergelt3

  • 1Viterbi Family Sleep Center, Scripps Clinic, La Jolla, CA, USA; Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA.

Sleep Medicine
|February 10, 2015
PubMed
Summary
This summary is machine-generated.

Genetic variations (SNPs) show potential links to sleep disorders like sleep apnea and periodic limb movements. Further research is needed to confirm these findings and understand their role in sleep disturbances.

Keywords:
DIMSPPARGC1BSleep apneaSleep-related periodic leg movementsrs10766071rs3923809

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Area of Science:

  • Genetics
  • Sleep Medicine
  • Molecular Biology

Background:

  • Sleep disorders are common and have a heritable component, complicating diagnosis and treatment.
  • Understanding the genetic underpinnings of sleep disorders can help refine diagnostic criteria and guide therapeutic strategies.
  • Polymorphisms in specific genes may be associated with distinct sleep disorder phenotypes.

Purpose of the Study:

  • To investigate the association between single-nucleotide polymorphisms (SNPs) and various sleep disorder phenotypes.
  • To identify genetic markers that could help delineate diagnoses and suggest potential treatments for sleep disorders.
  • To expand the understanding of heritable pathophysiologic mechanisms in sleep disorders.

Main Methods:

  • Recruited adult patients undergoing polysomnography, collecting clinical data, DNA (saliva), and questionnaires.
  • Derived 38 overlapping phenotypes from complex data, including sleep complaints, timing, and polysomnographic disturbances.
  • Genotyped 768 SNPs using a custom chip and analyzed associations with phenotypes using linear regressions, controlling for age, gender, and ancestry.

Main Results:

  • A specific SNP (rs6888451) in PPARGC1B was associated with obstructive sleep apnea markers.
  • Another SNP (rs10766071) in ARNTL correlated with reduced polysomnographic sleep duration.
  • Confirmed the association of rs3923809 in BTBD9 with periodic limb movements during sleep; other SNPs showed weaker associations with sleep latency.

Conclusions:

  • Identified several SNPs potentially associated with various sleep phenotypes.
  • Emphasized the need for independent replication studies to mitigate false discovery risks.
  • Further investigation into the molecular mechanisms underlying these genetic associations is warranted.