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Related Experiment Videos

Migraine without aura: a population-based twin study.

M Gervil1, V Ulrich, K O Kyvik

  • 1Department of Neurology, Glostrup Hospital, University of Copenhagen, Glostrup, Denmark.

Annals of Neurology
|October 8, 1999
PubMed
Summary
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Migraine without aura has a genetic component, as shown by higher concordance rates in identical twins compared to fraternal twins. However, the genetic influence is modest, suggesting complex inheritance patterns for this common headache disorder.

Area of Science:

  • Neuroscience
  • Genetics
  • Epidemiology

Background:

  • Migraine without aura is a prevalent neurological disorder with an unclear etiology.
  • Understanding the interplay of genetic and environmental factors is crucial for elucidating migraine pathogenesis.
  • Twin studies provide a powerful approach to disentangle genetic and environmental influences on complex diseases.

Purpose of the Study:

  • To investigate the etiological importance of genetic and environmental factors in migraine without aura.
  • To compare the symptomatology of migraine without aura between monozygotic and dizygotic twin pairs.
  • To estimate the heritability of migraine without aura.

Main Methods:

  • Recruitment of 2,680 twin pairs from the Danish Twin Registry.

Related Experiment Videos

  • Telephone interviews conducted by a physician for diagnosis and symptom assessment.
  • Calculation of pairwise and probandwise concordance rates for monozygotic (MZ) and dizygotic (DZ) twins.

    • Main Results:

    • Significantly higher pairwise concordance rates observed in MZ twins (28%) compared to DZ twins (18%).
    • Probandwise concordance rates were 40% for MZ twins and 28% for DZ twins.
    • While individual symptom concordance did not differ significantly, overall symptom patterns were more concordant in MZ pairs.

    Conclusions:

    • The study demonstrates a significant, albeit modest, genetic contribution to the etiology of migraine without aura.
    • The findings suggest that identifying specific susceptibility genes for migraine without aura may be challenging.
    • Further research is needed to elucidate the complex genetic architecture and environmental interactions underlying migraine.