Methylenetetrahydrofolate reductase deficiency in a patient with phenotypic findings of Angelman syndrome.

Abstract excerpt

Deficiency of methylenetetrahydrofolate reductase (MTHFR) is associated with a variable phenotype that includes mental retardation, gait abnormalities, and seizures. Many of the same clinical findings are also seen in patients with Angelman syndrome. We report on a patient with MTHFR deficiency who was initially diagnosed as having Angelman syndrome. This case illustrates that MTHFR deficiency can mimic the...

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