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hypertrophic cardiomyopathy

Wednesday 16 July 2003

Hypertrophic cardiomyopathies are due to primary defects in sarcomerci function by mutations of genes coding for sarcomeric proteins composing the cardiac sarcomere.

Images

 Hypertrophic cardiomyopathy: Asymmetrical septal hypertrophy and microscopic disarray -

 Toluidine blue highlighting myocyte disarray in hypertrophic cardiomyopathy.

Synopsis

 asymmetrical septal hypertrophy
 microscopic disarray

Classification

 early-onset hypertrophic cardiomyopathy, infantile hypertrophic cardiomyopathy

Etiology

 mutations or variants of genes MYH7 , TNNT2 , MYBPC3 , TNNI3 , TPM1 , ACTC , MYL3 , MYL2 , LAMP2 , PRKAG2 , GLA , CAV3 , MTTG , MTTI , MTTK , TTR , TNNC1

 COX15 deficiency

Gene testing

 genedx.com

See also

 cardiomyopathies
 dilated cardiomyopathy

References

 Nishimura RA, Holmes DR Jr. Clinical practice. Hypertrophic obstructive cardiomyopathy. N Engl J Med. 2004 Mar 25;350(13):1320-7. PMID: 15044643

 Ashrafian H, Redwood C, Blair E, Watkins H. Hypertrophic cardiomyopathy:a paradigm for myocardial energy depletion.
Trends Genet. 2003 May;19(5):263-8. PMID: 12711218

 Arad M, Seidman JG, Seidman CE. Phenotypic diversity in hypertrophic cardiomyopathy. Hum Mol Genet. 2002 Oct 1;11(20):2499-506. PMID: 12351586