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Angelman syndrome: clinical profile
R T Zori1, J Hendrickson, S Woolven
1Raymond C. Philips Research and Education Unit, University of Florida, Gainesville 32610.
Journal of Child Neurology
|July 1, 1992
Summary
Early diagnosis of Angelman syndrome is challenging, often occurring after age one despite common infant issues like feeding difficulties and seizures. A high index of suspicion is crucial for identifying this genetic disorder.
Area of Science:
- Genetics
- Developmental Pediatrics
- Clinical Neurology
Background:
- Angelman syndrome is a rare genetic disorder characterized by severe developmental delay, intellectual disability, and specific behavioral features.
- Clinical presentation can be variable, making early diagnosis difficult.
Purpose of the Study:
- To further delineate the clinical and developmental features of Angelman syndrome.
- To identify key diagnostic challenges and recommend strategies for earlier identification.
Main Methods:
- Data collection through physical examinations, laboratory data, and family questionnaires.
- Comprehensive review of medical and surgical histories of affected individuals.
- Literature review to supplement collected data.
Main Results:
- Most infants presented with feeding difficulties, developmental delay, or seizures, but diagnosis was rarely made before one year of age.
- Visual complaints or findings were common, while other medical complications were infrequent.
- Sixty percent of children had a cytogenetically demonstrated deletion in chromosome 15q11-q13, with no clear clinical differentiation between those with and without the deletion.
Conclusions:
- Diagnosis of Angelman syndrome in early childhood is difficult due to overlapping symptoms and delayed recognition.
- A high index of suspicion is recommended for clinicians encountering infants with suggestive developmental and neurological signs.
- Further research may be needed to identify more specific early biomarkers or diagnostic criteria.