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J Inherit Metab Dis. 1996;19(5):589-94.

Molecular genetics of methylenetetrahydrofolate reductase deficiency.

Author information

  • Department of Human Genetics, McGill University-Montreal Children's Hospital, Quebec, Canada.

Abstract

In severe MTHFR deficiency with neonatal or adolescent onset, 9 rare mutations have been identified. In mild MTHFR deficiency with thermolabile enzyme, a single common mutation (an alanine-to-valine substitution) is involved, but a genetic-nutrient interactive effect is required to produce mild hyperhomocysteinaemia. This interactive effect has been proposed to be a risk factor for arteriosclerosis and for neural-tube defects. Large-scale studies are required for confirmation of the role of MTHFR in these multifactorial processes as well as to assess its role in other folate-dependent disorders.

PMID:
8892013
[PubMed - indexed for MEDLINE]
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