Mutation analysis of a Chinese family with inherited long QT syndrome / 中华医学遗传学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To identify the mutation of a Chinese family with inherited long QT syndrome(LQTS).</p><p><b>METHODS</b>The disease-causing gene was tentatively determined in light of the clinical manifestations and electrophysiological properties, and then polymerase chain reaction and DNA sequencing were used for screening and identifying mutation.</p><p><b>RESULTS</b>A missense mutation G940A(G314S) in the KCNQ1 gene was identified, which was the 'hot spot' of long QT syndrome mutation.</p><p><b>CONCLUSION</b>The mutation that is involved with long QT syndrome in Chinese patients is the same as that in the European, American and Japanese patients.</p>