Related Experiment Videos
[A case of inv dup (15) mosaic with mental retardation and symptomatic generalized epilepsy]
1Department of Behavioral Science, National Defense Medical College Research Institute, Tokorozawa, Japan.
Abstract:
We report a case of inv dup (15) mosaic with moderate mental retardation and symptomatic generalized epilepsy whose attacks were successfully controlled by phenytoin. Battaglia et al. (1997) reported four cases of inv dup (15) syndrome, whose symptoms contained intractable Lennox-Gastaut syndrome, moderate or severe mental retardation, diffuse hypotonia, and minor anomaly. The present case was diagnosed as mosaicism of inv dup (15) syndrome. It was suspected that the patient had a treatable epileptic seizure and no minor anomaly because of the mosaicism.
Insights
This study details a case of mosaic inverted duplication chromosome 15 syndrome, successfully managing epilepsy with phenytoin. Mosaicism may explain the absence of minor anomalies and treatable seizures in this patient.
Area of Science:
- Genetics
- Neurology
- Pediatrics
Background:
- Inv dup (15) syndrome is a chromosomal abnormality associated with developmental delays and epilepsy.
- Previous reports describe severe symptoms including intractable epilepsy and significant intellectual disability.
Observation:
- A case of mosaic inv dup (15) syndrome was identified.
- The patient presented with moderate mental retardation and symptomatic generalized epilepsy.
- Unlike previously reported cases, this patient lacked minor anomalies.
Findings:
- Epileptic seizures in this mosaic inv dup (15) case were effectively controlled by phenytoin medication.
- The mosaic nature of the chromosomal abnormality is suspected to contribute to the milder phenotype.
Implications:
- This case highlights the potential for varied clinical presentations in mosaic inv dup (15) syndrome.
- Phenotypic variability suggests that mosaicism may influence seizure treatability and the presence of dysmorphic features.
- Further research into genotype-phenotype correlations in mosaic chromosomal abnormalities is warranted.