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Int J Cardiol. 2009 Jan 24;131(3):410-2. Epub 2007 Nov 14.

Deletion in TNNI3 gene is associated with restrictive cardiomyopathy.

Abstract

In dilated and hypertrophic cardiomyopathies, over ten disease-causing genes have been identified in each entity. In contrast, mutations in only desmin and cardiac troponin T and I (TNNI3) have been shown to cause restrictive cardiomyopathy (RCM). We applied a candidate gene approach and identified a novel one nucleotide deletion, resulting in frame shift and predicted formation of a premature stop codon, deletion of part of exon 7 and all exon 8, and truncation of significant C-terminal portion of TNNI3. Western blot analysis showed approximately 50% reduction of total troponin I content in myocardial tissue. The clinical hallmark was a restrictive type of cardiac hemodynamics, and congestive heart failure, leading to the death of the patient at the age of 28.

PMID:
18006163
DOI:
10.1016/j.ijcard.2007.07.108
[Indexed for MEDLINE]
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