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Outcome of three cases of untreated maternal glutaric aciduria type I
Paula Garcia1, Esmeralda Martins, Luísa Diogo
1Hospital Pediátrico de Coimbra, Av. Bissaya Barreto, 3000 Coimbra, Portugal.
Insights
Untreated glutaric aciduria type I (GA I) in mothers resulted in biochemical abnormalities in newborns. Despite initial neuroimaging findings, all three children showed normal physical and neurological development up to age 5.
Area of Science:
- Biochemistry
- Genetics
- Pediatrics
Background:
- Glutaric aciduria type I (GA I) is a rare inherited metabolic disorder.
- Maternal GA I can impact fetal development and neonatal health.
- Early identification and management are crucial for affected individuals.
Observation:
- Three children were born to two mothers with untreated GA I.
- Neonatal screening identified isolated hypocarnitinemia in one infant, leading to the diagnosis of GA I in his previously undiagnosed mother.
- Newborn screening in the second infant, born to a diagnosed but untreated mother, reflected the maternal metabolic state.
Findings:
- Biochemical abnormalities in the infants normalized within one week.
- Neuroimaging at 4 months revealed Sylvian enlargement in both infants and bilateral temporal arachnoid cysts in one.
- All three children exhibited normal physical and neurological development at ages 2 and 5 years.
Implications:
- This study highlights the importance of maternal health screening for metabolic disorders like GA I.
- Neonatal screening can detect GA I indirectly through maternal metabolic status.
- Long-term follow-up is essential to fully understand the developmental outcomes for children exposed to GA I in utero.
Abstract:
We report, for the first time, the outcome of three children born to two women with untreated glutaric aciduria type I (GA I). Isolated hypocarnitinemia in neonatal screening in one baby allowed the identification of the disease in his mother, who was undiagnosed so far and had had a previous daughter. The other baby was born to an already diagnosed mother who was not treated; newborn screening in the child reflected the metabolic state of the mother. Biochemical abnormalities returned to normal within one week. At the age of 4 months, neuroimaging showed Sylvian enlargement in both infants and bilateral temporal arachnoid cysts in one. Physical and neurological developments were normal for the three patients at ages 2 and 5 years. We conclude that long-term follow up will determine the true impact of GA I in such children.
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