ATP1A2 mutations in 11 families with familial hemiplegic migraine.

Florence Riant, Maurizio De Fusco, Paolo Aridon, Anne Ducros, Claire Ploton, Florence Marchelli, Jacqueline Maciazek, Marie Germaine Bousser, Giorgio Casari, Elisabeth Tournier-Lasserve

Research output: Contribution to journalArticlepeer-review


Familial hemiplegic migraine (FHM) is an autosomal dominant form of migraine with aura. The disease is caused by mutations of at least three genes among which two have been identified, CACNA1A and ATP1A2. Very few mutations have been identified so far in ATP1A2. We screened the coding sequence of ATP1A2 in 26 unrelated FHM probands in whom CACNA1A screening was negative. A total of eight different mutations were identified in 11 of the probands (41%), including six missense mutations, one small deletion leading to a frameshift, and one in frame deletion. All were novel mutations. Two mutations were recurrent, in three and two families, respectively. Genotyping of 94 relatives of these 11 probands identified 47 mutation carriers, among whom 36 were clinically affected. Sequencing of all 23 exons in an ethnically matched panel detected only one exonic coding polymorphism.

Original languageEnglish
Pages (from-to)281
Number of pages1
JournalHuman Mutation
Issue number3
Publication statusPublished - Sep 2005

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)


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