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Morscher, R J; Grünert, S C; Bürer, C; Burda, P; Suormala, T; Fowler, B; Baumgartner, M R (2012). A single mutation in MCCC1 or MCCC2 as a potential cause of positive screening for 3-methylcrotonyl-CoA carboxylase deficiency. Molecular Genetics and Metabolism, 105(4):602-606.

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Abstract

Isolated 3-Methylcrotonyl-CoA carboxylase deficiency (MCC deficiency) is an organic aciduria presenting with a highly variable phenotype and has been part of newborn screening programs in various countries, in particular in the US. Here we present enzymatic and genetic characterisation of 22 individuals with increased 3-hydroxyisovalerylcarnitine and/or 3-methylcrotonylglycine suggesting MCC deficiency, but only partially reduced 3-methylcrotonyl-CoA carboxylase activity. Among these, 21 carried a single mutant allele in either MCCC1 (n=20) or MCCC2 (n=1). Our results suggest that heterozygosity for such a single deleterious mutation may lead to misdiagnosis of MCC deficiency.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Children's Hospital Zurich > Medical Clinic
04 Faculty of Medicine > Center for Integrative Human Physiology
DDC:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2012
Deposited On:25 Feb 2012 16:12
Last Modified:27 Nov 2013 17:08
Publisher:Elsevier
ISSN:1096-7192
Publisher DOI:10.1016/j.ymgme.2011.12.018
PubMed ID:22264772

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