A case with autosomal dominant mental retardation type 5 due to de novo SYNGAP1 variant / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 661-664, 2020.
Article
in Chinese
| WPRIM
| ID: wpr-826511
ABSTRACT
OBJECTIVE@#To investigate the clinical and genetic features of a Chinese girl featuring mental retardation, intellectual disability, language development delay and epilepsy.@*METHODS@#G-banded chromosomal karyotyping was carried out for the child. Genomic DNA of the patient and her parents was extracted and subjected to high-throughput sequencing. The results were analyzed with bioinformatic tools and validated by Sanger sequencing.@*RESULTS@#The karyotype of the child was ascertained as 46,XX. Sequencing result showed that she has carried a de novo heterozygous c.1861C>T (p.R621X) variant of the SYNGAP1 gene.@*CONCLUSION@#The nonsense variant c.1861C>T (p.R621X) of the SYNGAP1 gene probably underlies the disease in this child. Above result has enabled genetic diagnosis and counseling for her family.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Medical Genetics
Year:
2020
Type:
Article
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