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

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Moric E., Herbert E., Mazurek U., Samelska J., Cholewa K., Trusz-Gluza M., Wilczok T.

Journal of Applied Genetics

2002

vol. 43

issue 2

245-254

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 a-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.

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1 Journal of Applied Genetics

1 2002

1 Cholewa K.

1 Herbert E.

1 Mazurek U.

1 Moric E.

1 Samelska J.

1 Trusz-Gluza M.

1 Wilczok T.

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