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Genetics of vascular malformations.

Ha-Long Nguyen1, Laurence M Boon2, Miikka Vikkula3

  • 1Laboratory of Human Molecular Genetics, de Duve Institute, Université catholique de Louvain, Brussels, Belgium.

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Summary

Somatic mosaicism is key in vascular anomalies, often requiring advanced Next-Generation Sequencing (NGS) to detect low-quantity genetic changes. Identifying causative genes aids in developing targeted therapies for these vascular disorders.

Keywords:
FamilialGenetics of vascular malformationsSomatic mosaicismSporadic

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Area of Science:

  • Vascular biology and genetics
  • Developmental biology
  • Medical genetics

Background:

  • Vascular anomalies are diverse developmental defects, with most sporadic but some familial cases.
  • Understanding genetic mutations is crucial for elucidating etiopathogenic mechanisms in vascular development.
  • Somatic mosaicism is increasingly recognized as a significant factor in vascular lesion formation.

Purpose of the Study:

  • To highlight the role of somatic mosaicism in vascular anomalies.
  • To emphasize the necessity of Next-Generation Sequencing (NGS) for detecting low-level genetic alterations.
  • To underscore the potential of genetic discoveries for therapeutic advancements.

Main Methods:

  • Utilizing Next-Generation Sequencing (NGS) for high-throughput screening of blood and lesional DNA and RNA.
  • Deep sequencing to detect low-quantity somatic genetic changes.
  • Analysis of genetic variants in sporadic and familial vascular anomalies.

Main Results:

  • NGS has proven effective in discovering causative genetic mutations in vascular lesions.
  • Somatic mosaicism plays a critical role in the pathogenesis of many vascular anomalies.
  • Identification of specific genes provides insights into protein functions in vascular development.

Conclusions:

  • Comprehensive genetic identification is essential for understanding vascular anomaly mechanisms.
  • Developing in vitro and in vivo models based on genetic findings can accelerate research.
  • Targeted therapies, beyond symptomatic treatment, are achievable through a deeper understanding of vascular malformation genetics.