alexa Abstract | Genetic Study of 12 SNPs involved in 11 Folate Metabolism Genes and Neural Tube Defects in Suzhou Children
ISSN: 1747-0862

Journal of Molecular and Genetic Medicine
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Research Article Open Access


Objective: Neural tube defect (NTD) incidence could be effectively reduced by folic acid supplementation before and during pregnancy. We studied single nucleotide polymorphisms (SNPs) involved in folate metabolism to explore genetic susceptibility to NTD. We studied the association between 12 SNPs involved in 11 folate metabolism genes and NTDs.

Methods: We enrolled 76 children with NTD and 188 control children. We genotyped 12 folate metabolism SNPs including CBS-C699T, DHFR-c594+59del19, GSTO1-C428T, MTHFD-G1958A, MTHFR-C677T, MTHFR-A1298C, MTR-A2756G, MTRR-A66G, NFE2L2-ins1+C11108T, RFC1-G80A, TCN2-C776T, and TYMS-1494del6 using SNaPShot genotyping technology and confirmed by Sanger sequencing.

Results: One SNP, TYMS-1494del6, and one compound wide-type genotype of RFC1-G80A, MTHFR-A1298C and TCN2-C776T might decrease NTD risk, and three compound mutation genotypes of MTHFD-G1958A, MTHFRC677T, and MTR-A2756G; MTHFD-G1958A, MTR-A2756G, and RFC1-G80A; and RFC1-G80A, MTHFR-A1298C, and TCN2-C776T might increase NTD risk. The TT genotype of TYMS-1494del6 (P<0.001) and the AT+TT genotype of TYMS-1494del6 (P=0.009) were significant genotypes. Fourteen in 188 control babies carried the compound wide-type genotype of RFC1-G80A, MTHFR-A1298C, and TCN2-C776T, but none in 76 NTD babies (P=0.014). The ratios of the two compound mutants for MTHFD-G1958A, MTHFR-C677T, MTR-A2756G, and MTHFD-G1958A, RFC1-G80A, MTR-A2756G in NTD were higher than in control babies (P=0.021) and RFC1- G80A, MTHFR-A1298C, and TCN2-C776T (P=0.029).

Conclusions: The TT genotype of TYMS-1494del6 and the two wide-type genotypes of RFC1-G80A, MTHFRA1298C, and TCN2-C776T are protective in NTD. Three compound mutation genotypes of MTHFD-G1958A, MTHFR-C677T, MTR-A2756G, MTHFD-G1958A, MTR-A2756G, RFC1-G80A, and RFC1-G80A, MTHFR-A1298C, TCN2-C776T might increase susceptibility to NTD.

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Author(s): Qin Zhu, Li Li, Ting Wang, Wei Jiang, Jie Ding, Minjuan Liu, Yun Wang and Haibo Li


NTD, Folate, Folate metabolism genes, Single nucleotide polymorphisms, Epigenomics, Gene Therapy, Genetic Engineering in Medicine, Genomic Medicine, Human Molecular Genetics, Medicinal Biotechnology, Metabolomics, Molecular Basis of Cancer, Molecular Basis of Obesity, Molecular Diagnosis Molecular Genetic Test, Molecular Medicine, Nuclear Medicine, Pathology and Molecular Medicine

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