alexa Methylenetetrahydrofolate reductase gene polymorphisms in Egyptian women with unexplained recurrent pregnancy loss.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Molecular and Genetic Medicine

Author(s): Settin A, Elshazli R, Salama A, ElBaz R

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Abstract AIMS: This work aims at testing for the association of the methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms with unexplained recurrent pregnancy loss (RPL) among Egyptian women. SUBJECTS AND METHODS: Participants were 70 cases having a history of two or more events of unexplained RPL and 136 controls with a good obstetric history. Detection of MTHFR C677T and A1298C mutations was done by polymerase chain reaction with restriction fragment length polymorphisms assay using restriction enzymes HinfI and MboII respectively. RESULTS: Compared with controls, cases with unexplained pregnancy loss showed higher frequency of the homozygous mutant MTHFR 677 TT, 1298 CC genotypes, and the mutant haplotype 677T/1298C, although not reaching statistical significance. The frequency of 677 mutant genotypes (TT or TC) combined with either the mutant 1298 (CC or AC) or normal 1298 (AA) genotypes was significantly increased among cases with late-stage pregnancy loss versus those with early-stage pregnancy loss (p=0.001). There was also increased frequency of the 677 mutant genotypes among cases with secondary infertility compared with those with primary infertility and among cases with pregnancy loss >4 times compared with those with ≤4 times but with no statistical significance. Regarding other risk factors, it was noted that the frequency of mutations among cases with no or just one risk factor did not differ significantly from those having two or more risk factors (p=0.98). CONCLUSIONS: Mutations related to the MTHFR gene are increased but not statistically significant in Egyptian women with unexplained pregnancy loss. Interaction with other genetic variants might be speculated and need to be investigated. This article was published in Genet Test Mol Biomarkers and referenced in Journal of Molecular and Genetic Medicine

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