Novel Genetic Variant in ALDH7A1 Linked to Pyridoxine-Dependent Epilepsy
Author Information
Author(s): Salih Mustafa A., AlBakheet Albandary, Almass Rawan, Hamed Ahlam A. A., AlOdaib Ali, Kaya Namik
Primary Institution: King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
Hypothesis
The study investigates a novel pathogenic variant in the ALDH7A1 gene that causes pyridoxine-dependent epilepsy in two siblings.
Conclusion
The study identifies a novel ALDH7A1 variant causing pyridoxine-dependent epilepsy and highlights associated developmental delays and intellectual disabilities.
Supporting Evidence
- Both patients exhibited neonatal seizures that were unresponsive to standard antiseizure medications.
- Pyridoxine treatment led to seizure control in both patients.
- Whole exome sequencing revealed a novel homozygous missense variant in ALDH7A1.
- Developmental delays were observed in both siblings despite early treatment.
- The variant was classified as likely pathogenic based on bioinformatic predictions.
Takeaway
Two siblings have a rare genetic condition that causes seizures, but they can be treated with a vitamin called pyridoxine to help control their symptoms.
Methodology
Whole exome sequencing was performed on DNA samples from the patients to identify genetic variants.
Limitations
The study is limited by the small sample size and the lack of access to certain diagnostic tests.
Participant Demographics
Two siblings from a consanguineous Sudanese family living in Saudi Arabia.
Digital Object Identifier (DOI)
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