Congenital microcephaly and seizures due to 3-phosphoglycerate dehydrogenase deficiency: Outcome of treatment with amino acids
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Congenital microcephaly, intractable seizures and severe psycho-motor retardation characterize 3-phosphoglycerate dehydrogenase (3-PGDH) deficiency, a disorder of L-serine biosynthesis. The enzyme defect results in low concentrations of serine and to a variable degree of glycine in plasma and cerebrospinal fluid. Short-term beneficial effects have been reported of oral treatment with the deficient amino acids. In this paper, we report the first follow-up data of amino acid therapy in five patients treated for 3–7.5 years. Different treatment regimes were used, but a favourable response to amino acids was observed in all patients. A major reduction in seizure frequency occurred in all patients; two patients became free of seizures. Amino acids were well tolerated and no adverse effects were documented. A progress of psychomotor development was only observed in one patient, diagnosed early and treated with a high dosage of L-serine. A favourable outcome of 3-PGDH deficiency depends on early diagnosis and treatment.
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Journal of Inherited Metabolic Disease
Volume 25, Issue 2 , pp 119-125
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- Kluwer Academic Publishers
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- 1. Department of Metabolic Diseases, University Medical Center, Utrecht, The Netherlands
- 2. Department of Pediatric Metabolic Diseases, University Medical Centre Utrecht, KC 03.063.0, PO Box 85090, 3508 AB, Utrecht, The Netherlands
- 3. Centre de Génétique Humaine, Institut de Pathologie et de Génétique, Loverval, Belgium
- 4. Department of Child Neurology, Hospital Saint Joan de Deu, Barcelona, Spain
- 5. Department of Child Neurology, University Medical Center Utrecht, The Netherlands
- 6. Laboratory for Genetic Metabolic Diseases, Academic Medical Centre, Amsterdam, The Netherlands
- 7. Department of Child Neurology, Emma Children's Hospital, Academic Medical Centre, Amsterdam, The Netherlands