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Related Experiment Videos

The Williams syndrome: an Italian collaborative study

P Franceschini1, A Guala, M P Vardeu

  • 1Istituto di Discipline Pediatriche, Università degli Studi, Torino.

Minerva Pediatrica
|October 1, 1996
PubMed
Summary

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Williams syndrome (WS), a genetic disorder from a chromosome 7 deletion, presents with intellectual disability, distinct facial features, and heart defects. This study details clinical findings in 77 Italian patients, aiding prognosis and care.

Area of Science:

  • Genetics
  • Pediatrics
  • Dysmorphology

Background:

  • Williams syndrome (WS) is a genetic disorder characterized by a microdeletion on chromosome 7, including the elastin gene.
  • It is often described as a contiguous gene syndrome with autosomal dominant inheritance.

Purpose of the Study:

  • To compile a comprehensive clinical profile of 77 Williams syndrome patients from 11 Italian centers.
  • To determine the frequency of various clinical signs and their associations.
  • To enhance understanding of WS clinical evolution, prognosis, and follow-up care.

Main Methods:

  • Data collection via questionnaire from 11 Italian Pediatric-Dysmorphology-Genetics Units.
  • Analysis of clinical features and their frequencies in 77 WS patients.

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  • Comparison of findings with existing literature.

    • Main Results:

    • Key diagnostic signs include intellectual disability with outgoing behavior, hoarse voice, stellate iris, periorbital fullness, thick lips, and congenital heart disease.
    • Frequencies of most signs align with literature, with notable differences in low stature, hallux valgus, hypoplastic nails, joint contractures, and ear infections.
    • The multisystemic nature of WS necessitates a coordinated, integrated approach to patient management.

    Conclusions:

    • The study provides a detailed clinical overview of WS in an Italian cohort.
    • Findings confirm the characteristic features of WS while highlighting variations in specific signs.
    • Integrated management strategies are crucial for addressing the complex, multisystemic aspects of Williams syndrome.