Recent reports linking Down syndrome (DS) to maternal polymorphism at the methylenetetrahydrofolate dehydrogenase (MTHFD) locus have generated a great interest among investigators in the field. In the current study, we examine one genetic polymorphism involved in homocysteine/folate pathway as a risk factor for DS in a Romanian urban-area women cohort. Our results show that the frequencies of MTHFD1 alleles, as well as the frequencies of MTHFD11958 genotypes (GG, GA, AA, GA+AA) do not correlate with DS pregnancies, demonstrating no difference between the case and control groups, as opposed to the findings of Scala et al. (2006) on an Italian cohort.
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