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Clin Genet. 2014 Oct;86(4):355-60. doi: 10.1111/cge.12286. Epub 2013 Oct 23.

Genetics of hypertrophic cardiomyopathy in Norway.

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Department of Medical Genetics, Oslo University Hospital Ullevaal, Oslo, Norway.


Genetic testing for hypertrophic cardiomyopathy (HCM) became available in Norway in 2003. Here, we describe the results of this testing in probands with HCM referred until the end of 2012. The translated exons of MYBPC3, MYH7, TNNI3, TNNT2, MYL2 and MYL3 were analyzed in two groups of probands. In Group 1, comprising 696 probands above 1 year of age, a mutation was found in 203 patients (29.2%). Of those, 5.9% were carriers of two mutations. Mean age in double mutation carriers, single mutation carriers and mutation negative probands was 44 years (± 19 years), 50 years (± 5 years) and 55 years (± 6 years), respectively. In Group 2, comprising 26 infants below the age of 1, a mutation was found in 15.4%. A total of 120 different mutations were found of which 51 (42.5%) were novel.


DNA sequencing; genes; hypertrophic cardiomyopathy; mutations; sarcomers

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