Methylenetetrahydrofolate reductase mutations, a genetic cause for familial recurrent neural tube defects.
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Date
2012-01
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Abstract
Methylenetetrahydrofolate reductase (MTHFR) gene mutations have been implicated as risk factors for neural tube defects (NTDs). The best-characterized MTHFR genetic mutation 677C→T is associated with a 2–4 fold increased risk of NTD if patient is homozygous for this mutation. This risk factor is modulated by folate levels in the body. A second mutation in the MTHFR gene is an A→C transition at position 1298. The 1298A→C mutation is also a risk factor for NTD, but with a smaller relative risk than 677C→T mutation. Under conditions of low folate intake or high folate requirements, such as pregnancy, this mutation could become of clinical importance. We present a case report with MTHFR genetic mutation, who presented with recurrent familial pregnancy losses due to anencephaly/NTDs.
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Folate, methylenetetrahydrofolate reductase gene mutation, neural tube defects
Citation
Yaliwal Laxmi V, Desai Rathnamala M. Methylenetetrahydrofolate reductase mutations, a genetic cause for familial recurrent neural tube defects. Indian Journal of Human Genetics. 2012 Jan; 18(1): 122-124.