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Spanish families with cavernous angiomas do not share the Hispano- American CCM1haplotype
  1. H H JUNG,
  2. P LABAUGE,
  3. S LABERGE,
  4. E MARÉCHAL,
  5. E TOURNIER-LASSERVE
  1. INSERM U25, Faculté de Médecine Necker, Paris, France
  2. Laboratorio de Biologia Molecular
  3. Servicio de Neurologia, Hospital Unversitario Virgen Macarena, Avenida Dr Fedriani, 41071 Sevilla, Spain
  4. Hôpital Lariboisière, Paris, France
  1. E Tournier-Lasserve, INSERM U25, Faculté de Médecine Necker, 156 Rue de Vaugirard, 75730 Paris Cedex 15. France, Telephone 0033 1 45 67 25 97; fax 0033 1 40 56 01 07; email: tournier{at}necker.fr
  1. M LUCAS
  1. INSERM U25, Faculté de Médecine Necker, Paris, France
  2. Laboratorio de Biologia Molecular
  3. Servicio de Neurologia, Hospital Unversitario Virgen Macarena, Avenida Dr Fedriani, 41071 Sevilla, Spain
  4. Hôpital Lariboisière, Paris, France
  1. E Tournier-Lasserve, INSERM U25, Faculté de Médecine Necker, 156 Rue de Vaugirard, 75730 Paris Cedex 15. France, Telephone 0033 1 45 67 25 97; fax 0033 1 40 56 01 07; email: tournier{at}necker.fr
  1. J M GARCIA-MORENO,
  2. M A GAMERO,
  3. G IZQUIERDO
  1. INSERM U25, Faculté de Médecine Necker, Paris, France
  2. Laboratorio de Biologia Molecular
  3. Servicio de Neurologia, Hospital Unversitario Virgen Macarena, Avenida Dr Fedriani, 41071 Sevilla, Spain
  4. Hôpital Lariboisière, Paris, France
  1. E Tournier-Lasserve, INSERM U25, Faculté de Médecine Necker, 156 Rue de Vaugirard, 75730 Paris Cedex 15. France, Telephone 0033 1 45 67 25 97; fax 0033 1 40 56 01 07; email: tournier{at}necker.fr
  1. E TOURNIER-LASSERVE
  1. INSERM U25, Faculté de Médecine Necker, Paris, France
  2. Laboratorio de Biologia Molecular
  3. Servicio de Neurologia, Hospital Unversitario Virgen Macarena, Avenida Dr Fedriani, 41071 Sevilla, Spain
  4. Hôpital Lariboisière, Paris, France
  1. E Tournier-Lasserve, INSERM U25, Faculté de Médecine Necker, 156 Rue de Vaugirard, 75730 Paris Cedex 15. France, Telephone 0033 1 45 67 25 97; fax 0033 1 40 56 01 07; email: tournier{at}necker.fr

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Cerebral cavernous malformations are vascular malformations mostly located in the CNS. Their frequency is estimated close to 0.5% in the general population.1 Cerebral cavernous malformations occur as a sporadic or hereditary condition. From the Hispano-American population, familial forms were reported with a high frequency.2 CCM1, a hitherto unidentified gene mapping on chromosome 7 was shown to be involved in all families with cerebral cavernous malformations of Hispano-American descent with a strong founder effect.2 3 Around 50% of non-Hispano-American families showed linkage toCCM1 but no common haplotype was found.4 5 A recent study showed linkage of cerebral cavernous malformations to two additional loci.5 No Spanish family with cerebral cavernous malformations has been analysed so far.

(A) Pedigrees of the nine families with cerebral cavernous malformations. Black symbols=symptomatic patients with cavernous angiomas on MRI; half filled symbols=asymptomatic members with cavernous angiomas on MRI; empty symbols=asymptomatic members with normal MRI; question mark=members with unknown status. (B) Comparison of the Hispano-American CCM1 haplotype and the haplotypes segregating with the disease phenotype within Spanish families. Polymorphic markers are shown on the left. Numbers indicate the sizes in base pairs. Primers used to amplify D7S2409 were …

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