Objective: To explore the genetic etiology of a girl featuring epilepsy, speech delay and mild mental retardation.
Methods: Peripheral blood samples of the child and her parents were collected. Genomic DNA was extracted and subjected to next generation sequencing. Suspected variant was confirmed by Sanger sequencing.
Results: The child was found to carry a de novo heterozygous c.3592G>A (p.V1198M) variant of the SMARCA2 gene, which was predicted to be pathogenic by bioinformatic analysis.
Conclusion: The child was diagnosed with Nicolaides-Baraitser syndrome due to heterozygous variant of the SMARCA2 gene.
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| http://dx.doi.org/10.3760/cma.j.issn.1003-9406.2020.02.011 | DOI Listing |
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