APPLICATION OF NEXT-GENERATION SEQUENCING (NGS) IN DIAGNOSING THE CAUSES OF AUTISM SPECTRUM DISORDER IN CHILDREN
Main Article Content
Abstract
Objectives: Investigating the rate of patients with MTHFR C677T and MTHFR A1298C polymorphisms in children with autism spectrum disorder and evaluating the role of Next-generation sequencing NGS in diagnosing causes of autism spectrum disorder. Subjects and method: A cross-sectional descriptive study was conducted on 50 children diagnosed with autism spectrum disorder according to DSM – IV at the Department of Medical Biology and Genetics from September 2019 to September 2020. Results: The rates of genotype MTHFR 677 CC/CT/TT in children with autism spectrum disorder were 70%/26%/4%, respectively. The rates of genotype MTHFR 1298 AA/AC/CC in children with autism spectrum disorder were 28%/60%/12%, respectively. There were 15 different variants in the genes associated with autism spectrum disorder detected by NGS. Conclusion: The rates of genotype MTHFR 677 CC/CT/TT in children with autism spectrum disorder were 70%/26%/4%, respectively. The rates of genotype MTHFR 1298 AA/AC/CC in children with autism spectrum disorder were 28%/60%/12%, respectively. NGS is a useful technique for diagnosing genetic causes of autism spectrum disorder, especially rare variants.
Article Details
Keywords
Autism spectrum disorder, NGS
References
2. Nghiên cứu xu thế mắc và một số đặc điểm dịch tễ học của trẻ tự kỷ điều trị tại Bệnh viện Nhi Trung ương giai đoạn 2000 đến 2007. Accessed April 19, 2022. http://lienthuvien.yte.gov.vn/tai-lieu/y-hoc-thuc-hanh/nghien-cuu-xu-the-mac-va-mot-so-dac-diem-dich-te-hoc-cua-tre-tu-ky-dieu-tri-tai-benh-vien-nhi-trung-uong-giai-doan-2000-den-2007
3. El-Baz F, El-Aal MA, Kamal TM, Sadek AA, Othman AA. Study of the C677T and 1298AC polymorphic genotypes of MTHFR Gene in autism spectrum disorder. Electron Physician. 2017;9(9):5287-5293. doi:10.19082/5287
4. Sener EF, Oztop DB, Ozkul Y. MTHFR Gene C677T Polymorphism in Autism Spectrum Disorders. Genet Res Int. 2014;2014:698574. doi:10.1155/2014/698574
5. Werling AM, Bobrowski E, Taurines R, et al. CNTNAP2 gene in high functioning autism: no association according to family and meta-analysis approaches. J Neural Transm Vienna Austria 1996. 2016;123(3):353-363. doi:10.1007/s00702-015-1458-5
6. Lin PI, Chien YL, Wu YY, et al. The WNT2 gene polymorphism associated with speech delay inherent to autism. Res Dev Disabil. 2012;33(5): 1533-1540. doi:10.1016/j.ridd.2012.03.004
7. Gharani N, Benayed R, Mancuso V, Brzustowicz LM, Millonig JH. Association of the homeobox transcription factor, ENGRAILED 2, 3, with autism spectrum disorder. Mol Psychiatry. 2004;9(5):474-484. doi:10.1038/sj.mp.4001498
8. Wang L, Li J, Shuang M, et al. Association study and mutation sequencing of genes on chromosome 15q11-q13 identified GABRG3 as a susceptibility gene for autism in Chinese Han population. Transl Psychiatry. 2018;8:152. doi:10.1038/s41398-018-0197-4