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Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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In Vitro Models of Sturge-Weber Syndrome: Strengths, Limitations, and Future Goals.

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Biomarker development in Sturge-Weber syndrome.

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Sturge-Weber syndrome.

Anne M Comi1

  • 1Hunter Nelson Sturge-Weber Center, Kennedy Krieger Institute, Baltimore, MD, USA.

Handbook of Clinical Neurology
|November 14, 2015
PubMed
Summary

Sturge-Weber syndrome, a rare neurocutaneous disorder, is caused by a GNAQ gene mutation. Early detection and management of facial port-wine birthmarks are crucial for preventing severe brain and eye complications.

Area of Science:

  • Genetics
  • Neurology
  • Dermatology

Background:

  • Sturge-Weber syndrome (SWS) is a rare neurocutaneous disorder affecting approximately 1 in 20,000 live births.
  • It is characterized by a facial port-wine birthmark and potential involvement of the brain and eyes.
  • SWS is not inherited and occurs sporadically, impacting all demographics.

Purpose of the Study:

  • To summarize the current understanding of Sturge-Weber syndrome, including its genetic basis, clinical presentation, and management.
  • To highlight the significance of early diagnosis and monitoring for newborns with facial port-wine birthmarks.

Main Methods:

  • Review of existing literature on Sturge-Weber syndrome.
  • Analysis of the genetic mutation (GNAQ) associated with SWS and port-wine birthmarks.
Keywords:
GNAQSturge–Weber syndromeepilepsyglaucomaport-wine birthmarksomatic mosaic mutation

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  • Summary of current and potential future treatment strategies.

    • Main Results:

    • A somatic activating mutation in the GNAQ gene is the underlying cause of SWS and isolated port-wine birthmarks.
    • Newborns with upper facial port-wine birthmarks have a 15-50% risk of SWS-related brain or eye complications.
    • Early screening and monitoring are essential for timely diagnosis and intervention.

    Conclusions:

    • Understanding the GNAQ mutation provides insights into SWS pathogenesis.
    • Prompt management of port-wine birthmarks can mitigate severe neurological and ophthalmological sequelae.
    • Multidisciplinary treatment approaches, including laser therapy, glaucoma management, and neurological interventions, are vital for optimal patient outcomes.