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A lethal course of hypertrophic cardiomyopathy in Noonan syndrome due to a novel germline mutation in the KRAS gene: case study

Identifieur interne : 006126 ( Ncbi/Checkpoint ); précédent : 006125; suivant : 006127

A lethal course of hypertrophic cardiomyopathy in Noonan syndrome due to a novel germline mutation in the KRAS gene: case study

Auteurs : Gregor Nosan [Slovénie] ; Sara Bertok [Slovénie] ; Samo Vesel [Slovénie] ; Helger G. Yntema [Pays-Bas] ; Darja Paro-Panjan [Slovénie]

Source :

RBID : PMC:3893993

Abstract

Noonan syndrome is a relatively common and heterogeneous genetic disorder, including congenital heart defect in more than half of the cases. If the defect is not large, life expectancy is normal. Here we report on a case of an infant with Noonan syndrome and rapidly progressive hypertrophic cardiomyopathy with lethal outcome, in whom we identified a novel mutation in the KRAS gene. This heterozygous unclassified missense variant in exon 3: c.179G>T (p.Gly60Val) might be associated with a lethal form of Noonan syndrome. The malignant clinical course of the disease and the lethal outcome in an infant only a few months old might be connected to RAS-mitogen-activated protein kinase pathway hyperactivation, consequently promoting cell growth and proliferation, leading to rapidly progressive hypertrophic cardiomyopathy. Further biochemical and functional studies are needed to confirm this hypothesis.


Url:
DOI: 10.3325/cmj.2013.54.574
PubMed: 24382853
PubMed Central: 3893993


Affiliations:


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PMC:3893993

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