PL EN


Preferences help
enabled [disable] Abstract
Number of results
2010 | 51 | 4 | 515-518
Article title

Cardiac ion channel gene mutations in Greek long QT syndrome patients

Title variants
Languages of publication
EN
Abstracts
EN
The long QT syndrome (LQTS) is an inherited cardiac arrhythmia that may lead to sudden death in the absence of structural heart disease. Mutations in the cardiac potassium and sodium channel genes can be found in approximately 70% of patients with a highly probable clinical diagnosis. In this study, we aimed to genotype and explore the yield of genetic testing of LQTS patients from Greece, for whom there are no collective published data available. We clinically evaluated and genetically screened 17 unrelated patients for mutations in the KCNQ1, KCNH2, SCN5A, KCNE1, and KCNE2 cardiac ion channel genes. Genetic testing was positive in 6 out of 8 patients with a highly probable clinical diagnosis of LQTS and negative for all the other patients. Two patients carried KCNQ1 mutations (c.580G>C, c.1022C>T), while 4 patients carried KCNH2 mutations (c.202T>C, c.1714G>A, c.3103delC, c.3136C>T). To the best of our knowledge, the last mentioned mutation (c.3136C>T) is novel. Moreover, 27 single-nucleotide polymorphisms (SNPs) were detected, 5 of which are novel. Our preliminary data indicate a low genetic diversity of the Greek LQTS genetic pool, and are in accordance with international data that genetic testing of the major LQTS genes is efficient in genotyping the majority of patients with a strong clinical diagnosis. Therefore, the transition of an LQTS genetic screening program from research to the diagnostic setting within our ethnic background is feasible.
Discipline
Publisher

Year
Volume
51
Issue
4
Pages
515-518
Physical description
Contributors
References
Document Type
ARTICLE
Publication order reference
C.M. Kotta, Division of Inherited Cardiovascular Diseases, 1st Department of Cardiology, University of Athens Medical School, Hippokration Hospital, 14 Paloumbioti St., 11476 Athens, Greece
Identifiers
YADDA identifier
bwmeta1.element.element-from-psjc-fc47485d-41d1-3cbb-a8df-0643c9157f1f
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.