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  • Title: Genetic heterogeneity of familial hemiplegic migraine.
    Author: Ophoff RA, van Eijk R, Sandkuijl LA, Terwindt GM, Grubben CP, Haan J, Lindhout D, Ferrari MD, Frants RR.
    Journal: Genomics; 1994 Jul 01; 22(1):21-6. PubMed ID: 7959770.
    Abstract:
    Familial hemiplegic migraine (FHM) is a distinctive form of migraine with an autosomal dominant mode of inheritance. The migraine-like attacks are associated with transient hemiparesis. A locus for FHM has recently been assigned to chromosome 19 by linkage mapping. In the present study, five unrelated pedigrees with multiple members suffering from hemiplegic migraine were investigated. In two of the pedigrees additional symptoms, cerebellar ataxia and benign neonatal convulsions, respectively, were observed in affected members. Three pedigrees showed linkage to loci D19S391, D19S221, and D19S226 at chromosome 19p13. Haplotyping suggested a location of a FHM gene between D19S391 and D19S221. In the two remaining families, evidence against linkage was found. These results confirm the localization of a gene for familial hemiplegic migraine to the short arm of chromosome 19, but locus heterogeneity not corresponding to the observed clinical heterogeneity is likely to exist.
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