BACKGROUND: Familial hypertrophic cardiomyopathy (HCM) is an allelic cardiac disorder characterized by increased ventricular wall mass and sudden cardiac death. A variety of dominant single-gene mutations in sarcomeric genes have been identified, indicating a highly heterogeneous genetic etiology. MYOZ2 encodes for sarcomeric calsarcin-1 located in the myocardial z-disc, a focal point of HCM disease genes. Very recently mutations in MYOZ2 were reported as a cause for HCM. To assess the prevalence of MYOZ2 mutations among European HCM patients, coding exons weree analyzed for genetic variants in 438 patients. MATERIAL/ METHODS: Four hundred thirty-eight patients with HCM in four European cardiovascular centers were recruited. The coding region of MYOZ2 was directly sequenced in all the HCM subjects. RESULTS: Two non-synonymous polymorphisms in exon 2 (rs17851524) and exon 5 (rs7687613) of MYOZ2 were identified in eight and twenty-two patients, respectively. However, no disease-causing mutations could be identified in this large cohort of HCM patients. CONCLUSIONS: Although a large cohort of more than 400 patients with familial HCM was screened, a disease-associated mutation in MYOZ2 was not identified. When these results are combined with previous reports, it can be concluded that MYOZ2 mutations are rare causes of familial HCM.
BACKGROUND:Familial hypertrophic cardiomyopathy (HCM) is an allelic cardiac disorder characterized by increased ventricular wall mass and sudden cardiac death. A variety of dominant single-gene mutations in sarcomeric genes have been identified, indicating a highly heterogeneous genetic etiology. MYOZ2 encodes for sarcomeric calsarcin-1 located in the myocardial z-disc, a focal point of HCM disease genes. Very recently mutations in MYOZ2 were reported as a cause for HCM. To assess the prevalence of MYOZ2 mutations among European HCM patients, coding exons weree analyzed for genetic variants in 438 patients. MATERIAL/ METHODS: Four hundred thirty-eight patients with HCM in four European cardiovascular centers were recruited. The coding region of MYOZ2 was directly sequenced in all the HCM subjects. RESULTS: Two non-synonymous polymorphisms in exon 2 (rs17851524) and exon 5 (rs7687613) of MYOZ2 were identified in eight and twenty-two patients, respectively. However, no disease-causing mutations could be identified in this large cohort of HCM patients. CONCLUSIONS: Although a large cohort of more than 400 patients with familial HCM was screened, a disease-associated mutation in MYOZ2 was not identified. When these results are combined with previous reports, it can be concluded that MYOZ2 mutations are rare causes of familial HCM.
Authors: I Christiaans; E A Nannenberg; D Dooijes; R J E Jongbloed; M Michels; P G Postema; D Majoor-Krakauer; A van den Wijngaard; M M A M Mannens; J P van Tintelen; I M van Langen; A A M Wilde Journal: Neth Heart J Date: 2010-05 Impact factor: 2.380
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Authors: Antonio Sponga; Joan L Arolas; Thomas C Schwarz; Cy M Jeffries; Ariadna Rodriguez Chamorro; Julius Kostan; Andrea Ghisleni; Friedel Drepper; Anton Polyansky; Euripedes De Almeida Ribeiro; Miriam Pedron; Anna Zawadzka-Kazimierczuk; Georg Mlynek; Thomas Peterbauer; Pierantonio Doto; Claudia Schreiner; Eneda Hollerl; Borja Mateos; Leonhard Geist; Georgine Faulkner; Wiktor Kozminski; Dmitri I Svergun; Bettina Warscheid; Bojan Zagrovic; Mathias Gautel; Robert Konrat; Kristina Djinović-Carugo Journal: Sci Adv Date: 2021-05-28 Impact factor: 14.957