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18q-mosaicism associated with Rett syndrome phenotype
K Gordon1, V M Siu, F Sergovich
1Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada.
American Journal of Medical Genetics
|April 15, 1993
Summary
Rett syndrome, a progressive neurological disorder, may present with diverse causes. A patient with 18q-mosaicism showed Rett syndrome characteristics, suggesting potential heterogeneity in this condition.
Area of Science:
- Genetics
- Neurology
- Developmental Disorders
Background:
- Rett syndrome is a rare neurodevelopmental disorder primarily affecting females, characterized by progressive encephalopathy.
- The etiology of Rett syndrome remains largely unknown, contributing to diagnostic challenges.
Observation:
- A case study of a female patient with 18q-mosaicism is presented.
- This patient exhibited clinical features consistent with both 18q-deletion syndrome and Rett syndrome.
Findings:
- The co-occurrence of 18q-mosaicism and Rett syndrome in a single patient suggests potential overlap or heterogeneity within Rett syndrome.
- This case highlights that 18q-mosaicism can present with symptoms mimicking Rett syndrome.
Implications:
- Thorough chromosomal analysis is recommended for patients suspected of having Rett syndrome to identify underlying genetic causes.
- Recognizing this potential heterogeneity can aid in more accurate diagnosis and understanding of Rett syndrome's diverse presentations.