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Townes-Brocks syndrome in two mentally retarded youngsters
T H Cameron1, A M Lachiewicz, A S Aylsworth
1Center for Development and Learning, University of North Carolina, Chapel Hill.
American Journal of Medical Genetics
|October 1, 1991
Insights
Townes-Brocks syndrome (TBS) can be associated with intellectual disability. Hearing loss, ranging from mild to high-frequency specific, was observed in both reported cases, suggesting a link between TBS and cognitive impairment.
Area of Science:
- Genetics
- Pediatrics
- Neurology
Background:
- Townes-Brocks syndrome (TBS) is a rare genetic disorder.
- TBS is characterized by limb, ear, and kidney malformations.
- The spectrum of TBS manifestations requires further elucidation.
Observation:
- Two pediatric patients diagnosed with Townes-Brocks syndrome were evaluated.
- Audiological assessments revealed hearing loss in both children.
- One patient exhibited mild hearing loss, while the other presented with high-frequency (8000 Hz) hearing loss.
Findings:
- The reported cases indicate a potential association between Townes-Brocks syndrome and intellectual disability.
- Hearing impairment, including high-frequency specific loss, is a notable feature in these TBS patients.
- These findings suggest that cognitive deficits may be more prevalent in individuals with TBS than previously recognized.
Implications:
- Further research is warranted to confirm the incidence of intellectual disability in Townes-Brocks syndrome.
- Comprehensive audiological and neurodevelopmental evaluations are crucial for early identification and management of TBS-related complications.
- Understanding the full phenotypic spectrum of TBS can improve patient care and genetic counseling.
Abstract:
We report on 2 children with Townes-Brocks syndrome (TBS) and mental retardation. One child had mild hearing loss, but the other only had hearing loss at 8000 Hz. These cases suggest that there may be an increased incidence of mental retardation in individuals with TBS.