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Abstract
Tandem mass spectrometry (MS/MS) has been introduced in several newborn screening programs for the detection of a large number of inborn errors of metabolism, including fatty acid oxidation disorders (FAOD). Early identification and treatment of FAOD have the potential to improve outcome and may be life-saving in some cases; an estimated 5% of sudden infant deaths are attributable to undiagnosed disorders of fatty acid oxidation. We report very early neonatal presentations of long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) and mitochondrial trifunctional protein (TFP) deficiencies confirmed by molecular analysis. Both patients had cardiorespiratory collapse and hypoglycemia, without a history of maternal pregnancy complications. Retrospective MS/MS analysis of the original newborn screening blood spots revealed characteristic acylcarnitine profiles. These cases are among the earliest reported presentations of LCHAD and TFP deficiencies and further illustrate the potential of MS/MS as a valuable tool for newborn screening of FAOD. However, timely analysis and reporting of results to clinicians are essential, because these disorders can manifest in the first few days of life.
View details for DOI 10.1006/mgme.2001.3282
View details for PubMedID 11855930