Referenced in: none

Automatically associated channels: Kv7.1

Title: The KVLQT1 gene is not a common target for mutations in patients with various heart pathologies.

Authors: Ewa Moric, Ernest Herbert, Urszula Mazurek, Justyna Samelska, Krzysztof Cholewa, Maria Trusz-Gluza, Tadeusz Wilczok

Journal, date & volume: J. Appl. Genet., 2002 , 43, 245-54

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/12080180

Abstract
The long QT syndrome (LQTS) is a disorder of ventricular repolarization that exposes affected individuals to cardiac arrhythmias and sudden death. The first gene for LQTS has been mapped to chromosome 11 p.15.5 by genome-wide linkage analysis. This gene, originally named KVLQT1 (and later KCNQ1), is a novel potassium channel gene. Mutations in the human KVLQT1 gene, encoding the alpha-subunit of the KVLQT1 channel, cause the long QT syndrome. In this work, we analysed the sequence of six KVLQT1 exons in patients with various heart pathologies. We describe 6 different mSSCP patterns with no disease-related SSCP conformers in any sample. Direct sequencing of exons 2 to 7 confirmed the absence of mutations. This suggests that the analysed region of the KVLQT1 gene is not commonly involved in pathogenesis of the long QT syndrome.