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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Maternal MTR genotype contributes to the risk of non-syndromic cleft lip and palate in the Polish population.

The aetiology of non-syndromic cleft lip with or without cleft palate (CL/P) is very complex. It has been shown that polymorphic variants of genes encoding key proteins of folate and methionine metabolism might be important maternal risk factors of having a child with this craniofacial anomaly. Therefore, in our study, mothers with CL/P children as well as control mothers were examined for prevalence of polymorphisms of genes that encode methylenetetrahydrofolate reductase (MTHFR), methionine synthase (MTR), 5,10-methylenetetrahydrofolate dehydrogenase, 5,10-methenyltetrahydrofolate cyclohydrolase and 10-formyltetrahydrofolate synthetase (MTHFD1) and reduced folate carrier 1 ( RFC1). We observed that there were no statistical differences in allele and genotype frequencies of MTHFR c.677C>T, MTHFD1 c.1958G>A and RFC1 c.80G>A between mothers who had children with CL/P and control mothers. However, mothers with MTR c.2756AG or GG genotype displayed a 2.195-fold increased risk of having a child with CL/P (95% CI 1.189-4.050, p = 0.011). The mechanism by which polymorphic transition of MTR gene might increase the maternal risk of having CL/P progeny is unknown. Our observations are consistent with a significant role of the methyl cycle in the development of craniofacial structures in humans.[1]

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