Human Genetics

, Volume 116, Issue 1–2, pp 8–16

Hereditary hemorrhagic telangiectasia: ENG and ALK-1 mutations in Dutch patients

  • T. G. W. Letteboer
  • R. A. Zewald
  • E. J. Kamping
  • G. de Haas
  • J. J. Mager
  • R. J. Snijder
  • D. Lindhout
  • F. A. M. Hennekam
  • C. J. J. Westermann
  • J. K. Ploos van Amstel
Original Investigation

DOI: 10.1007/s00439-004-1196-5

Cite this article as:
Letteboer, T.G.W., Zewald, R.A., Kamping, E.J. et al. Hum Genet (2005) 116: 8. doi:10.1007/s00439-004-1196-5

Abstract

Hereditary hemorrhagic telangiectasia (HHT) or Rendu-Osler-Weber disease is an autosomal dominant disorder characterized by an aberrant vascular development. The resulting vascular lesions range from smaller mucocutaneous telangiectases to large visceral arteriovenous malformations, especially in the skin, lung, gastrointestinal tract and the brain. Mutations in the genes encoding endoglin (ENG, chromosome 9q34) and activin A receptor type-like kinase 1 (ALK-1, also named ACVRL1, chromosome 12q13) are associated with HHT1 and HHT2, respectively. We report here on the genetic and molecular heterogeneity found in the HHT population in the Netherlands. Probands of 104 apparently unrelated families were studied and we performed sequence analysis on both the ENG gene and ALK-1 gene. In most of the probands, we found a mutation in one of the two genes: 53% in the ENG gene and 40% in the ALK-1 gene. In 7% of the families no ENG or ALK1 mutation was found. The mutations detected were deletions, insertions, nonsense, missense and splice site mutations. The majority were novel mutations.

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • T. G. W. Letteboer
    • 1
  • R. A. Zewald
    • 1
  • E. J. Kamping
    • 1
  • G. de Haas
    • 1
  • J. J. Mager
    • 2
  • R. J. Snijder
    • 2
  • D. Lindhout
    • 1
  • F. A. M. Hennekam
    • 1
  • C. J. J. Westermann
    • 2
  • J. K. Ploos van Amstel
    • 1
  1. 1.DBG-Department of Medical GeneticsUniversity Medical Center UtrechtUtrechtThe Netherlands
  2. 2.St. Antonius HospitalNieuwegeinThe Netherlands

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