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Study of MTHFR and MS polymorphisms as risk factors for NTD in the Italian population.

Abstract：

:Homozygosity for the C677T mutation in the methylenetetrahydrofolate reductase ( MTHFR) gene is a risk factor for neural tube defects (NTDs) in many populations, including Italians. Another common mutation on the MTHFR gene, A1298C, has also been described as a risk mutation. Furthermore, several studies have suggested that a defective methionine synthase ( MS) enzyme could be a critical defect in folate-related NTDs. An A-to-G transition at bp 2756 on the MS gene has also been reported. In this case-control study, we studied the frequencies of these two polymorphisms in 203 Italian probands with non-syndromic NTDs: 98 mothers, 67 fathers, and 210 control individuals. Although the A1298C polymorphism is common in the Italian population (0.25), the allelic frequency was significantly higher among NTD cases and their parents. Heterozygous patients and mothers have an odds ratio (OR) of 1.98 and 2.11, respectively. The risk associated with the 1298CC genotype was higher for cases (OR = 3.67), for fathers (OR = 3.28), and, above all, for mothers (OR = 6.23). The prevalence of the A2756G polymorphism of the MS gene was determined (0.15). No increased prevalence of the mutated G allele was found in NTD families. This study shows that the MTHFRA1298C polymorphism is a genetic determinant for NTD risk in Italy. No association between the MSA2756G and NTD susceptibility was found.

journal_name

J Hum Genet

journal_title

Journal of human genetics

authors

De Marco P,Calevo MG,Moroni A,Arata L,Merello E,Finnell RH,Zhu H,Andreussi L,Cama A,Capra V

doi

10.1007/s100380200043

keywords:

subject

Has Abstract

pub_date

2002-01-01 00:00:00

pages

319-24

issue

6

eissn

1434-5161

issn

1435-232X

journal_volume

47

pub_type

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