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CCN1 mutation is associated with atrial septal defect

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Item Type:Article
Title:CCN1 mutation is associated with atrial septal defect
Creators Name:Perrot, A. and Schmitt, K.R. and Roth, E.M. and Stiller, B. and Posch, M.G. and Browne, E.N.L. and Timmann, C. and Horstmann, R.D. and Berger, F. and Ozcelik, C.
Abstract:The genetic basis of congenital heart disease remains unknown in most of the cases. Recently, a novel mouse model shed new light on the role of CCN1/CYR61, a matricellular regulatory factor, in cardiac morphogenesis. In a candidate gene approach, we analyzed a cohort of 143 patients with atrial septal defects (ASD) by sequencing the coding exons of CCN1. In addition to three frequent polymorphisms, we identified an extremely rare novel heterozygous missense mutation (c.139C > T; p.R47W) in one patient with severe ASD. The mutation leads to an exchange of residues with quite different properties in a highly conserved position of the N-terminal insulin-like growth factor binding protein module. Further bioinformatic analysis, exclusion of known ASD disease genes as well as the exclusion of the mutation in a very high number of ethnically matched controls (more than 1,000 individuals) and in public genetic databases, indicates that the p.R47W variant is a probable disease-associated mutation. The report about ASD in mice in heterozygous Ccn 1 +/- animals strongly supports this notion. Our study is the first to suggest a relationship between a probable CCN1 mutation and ASD. Our purpose here was to draw attention to CCN1, a gene that we believe may be important for genetic analysis in patients with congenital heart disease.
Keywords:Atrial Septal Defect, ASD, CCN1, Congenital Heart Disease
Source:Pediatric Cardiology
Page Range:295-299
Date:February 2015
Official Publication:https://doi.org/10.1007/s00246-014-1001-8
PubMed:View item in PubMed

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