Sudden unexpected infant death (SUDI) in a newborn due to medium chain acyl CoA dehydrogenase (MCAD) deficiency with an unusual severe genotype

Italian Journal of Pediatrics

Marco Spada³  Amelia Morrone¹  Maria Rita Gallina⁴  Ubaldo Caruso⁵  Michela Cassanello⁵  Serena Catarzi¹  Anna Caciotti²  Francesco Porta³  Cristina Lovera³ 

[1] Department of Sciences for Woman and Child's Health, University of Florence, Florence, Italy;Metabolic and Muscular Unit, Clinic of Pediatric Neurology, Meyer Childrens’Hospital, Florence, Italy;Department of Pediatrics, University of Torino, Regina Margherita Children’s Hospital, Piazza Polonia 94, Torino, 10126, Italy;Newborn Intensive Care Unit, Maggiore della Carità Hospital, Novara, Italy;Laboratory for the Study of Inborn Errors of Metabolism, - University Department of Pediatrics, G. Gaslini Institute, Genoa, Italy

关键词: Fatty acid oxidation disorders;    Sudden infant death syndrome;    Sudden unexpected deaths in Infancy;    Medium chain acyl CoA dehydrogenase deficiency;   

Others  :  825606
DOI  :  10.1186/1824-7288-38-59

 received in 2012-09-25, accepted in 2012-10-20,  发布年份 2012

【 摘 要 】

Medium chain acyl CoA dehydrogenase deficiency (MCAD) is the most common inborn error of fatty acid oxidation. This condition may lead to cellular energy shortage and cause severe clinical events such as hypoketotic hypoglycemia, Reye syndrome and sudden death. MCAD deficiency usually presents around three to six months of life, following catabolic stress as intercurrent infections or prolonged fasting, whilst neonatal-onset of the disease is quite rare. We report the case of an apparently healthy newborn who suddenly died at the third day of life, in which the diagnosis of MCAD deficiency was possible through peri-mortem blood-spot acylcarnitine analysis that showed very high concentrations of octanoylcarnitine. Genetic analysis at the ACADM locus confirmed the biochemical findings by demonstrating the presence in homozygosity of the frame-shift c.244dup1 (p.Trp82LeufsX23) mutation, a severe genotype that may explain the unusual and very early fatal outcome in this newborn. This report confirms that inborn errors of fatty acid oxidation represent one of the genetic causes of sudden unexpected deaths in infancy (SUDI) and underlines the importance to include systematically specific metabolic screening in any neonatal unexpected death.

【 授权许可】

   
2012 Lovera et al.; licensee BioMed Central Ltd.

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