UNLABELLED: We describe an asymptomatic male infant with isolated 3-methylcrotonyl-coenzyme A carboxylase deficiency who came to medical attention by newborn mass screening due to elevated blood leucine. The diagnosis was made by abnormal urinary organic acids at 20 days of age and was confirmed by assay of the carboxylase activities in cultured skin fibroblasts. CONCLUSION: More attention should be paid to slight elevations of leucine levels in newborn mass screening. Urinary organic acid analysis should be performed in conspicuous cases.
UNLABELLED: We describe an asymptomatic male infant with isolated 3-methylcrotonyl-coenzyme A carboxylase deficiency who came to medical attention by newborn mass screening due to elevated blood leucine. The diagnosis was made by abnormal urinary organic acids at 20 days of age and was confirmed by assay of the carboxylase activities in cultured skin fibroblasts. CONCLUSION: More attention should be paid to slight elevations of leucine levels in newborn mass screening. Urinary organic acid analysis should be performed in conspicuous cases.
Authors: D D Koeberl; D S Millington; W E Smith; S D Weavil; J Muenzer; S E McCandless; P S Kishnani; M T McDonald; S Chaing; A Boney; E Moore; D M Frazier Journal: J Inherit Metab Dis Date: 2003 Impact factor: 4.982
Authors: Sarah C Grünert; Martin Stucki; Raphael J Morscher; Terttu Suormala; Celine Bürer; Patricie Burda; Ernst Christensen; Can Ficicioglu; Jürgen Herwig; Stefan Kölker; Dorothea Möslinger; Elisabetta Pasquini; René Santer; K Otfried Schwab; Bridget Wilcken; Brian Fowler; Wyatt W Yue; Matthias R Baumgartner Journal: Orphanet J Rare Dis Date: 2012-05-29 Impact factor: 4.123