Evidence for an X-linked genetic component in familial typical migraine
Nyholt, Dale R., Dawkins, Jennifer L., Brimage, Peter J., Goadsby, Peter J., Nicholson, Garth A., & Griffiths, Lyn R. (1998) Evidence for an X-linked genetic component in familial typical migraine. Human Molecular Genetics, 7(3), pp. 459-463.
Migraine is a common complex disorder that shows strong familial aggregation. There is a general increased prevalence of migraine in females compared with males, with recent studies indicating that migraine affects 18% of females compared with 6% of males. This preponderance of females among migraine sufferers coupled with evidence of an increased risk of migraine in first degree relatives of male probands but not in relatives of female probands suggests the possibility of an X-linked dominant gene. We report here the localization of a typical migraine susceptibility locus to the X chromosome. Of three large multigenerational migraine pedigrees two families showed significant excess allele sharing to Xq markers (P = 0.031 and P = 0.012). Overall analysis of data from all three pedigrees gave significant evidence in support of linkage and heterogeneity (HLOD = 3.1). These findings provide conclusive evidence that familial typical migraine is a heterogeneous disorder. We suggest that the localization of a migraine susceptibility locus to the X chromosome could in part explain the increased risk of migraine in relatives of male probands and may be involved in the increased female prevalence of this disorder.
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|Item Type:||Journal Article|
|Additional Information:||Articles free to read on journal website after 12 months|
|Divisions:||Current > Institutes > Institute of Health and Biomedical Innovation|
|Copyright Owner:||Copyright 1998 Oxford University Press|
|Deposited On:||26 Sep 2013 03:59|
|Last Modified:||20 May 2015 00:27|
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