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  • Title: [Relationship between congenital long QT syndrome and Brugada syndrome gene mutation].
    Author: Du R, Ren FX, Yang JG, Yuan GH, Zhang SY, Kang CL, Li W, Gui L, Li J.
    Journal: Zhongguo Yi Xue Ke Xue Yuan Xue Bao; 2005 Jun; 27(3):289-94. PubMed ID: 16038262.
    Abstract:
    OBJECTIVE: To investigate the molecular pathology in families with long QT syndrome (LQTS) including Jervell-Longe-Nielsen syndrome (JLNS) and Romano-ward syndrome (RWS) and Brugada syndrome (BS) in Chinese population. METHODS: Polymerase chain reaction and DNA sequencing were used to screen for KCNQ1, KCNH2, KCNE1, and SCN5A mutation. RESULTS: We identified a novel mutation N1774S in the SCN5A gene of the BS family, a novel mutation G314S in a RWS family which had also been found in Europe, North America, and Japan, and a single nucleotide polymorphisms (SNPs) G643S in the KCNQ1 of the JLNS family. In this JLNS family, another heterozygous novel mutation in exon 2a was found in KCNQ1 of the patients. CONCLUSION: New mutations were found in our experiment, which expand the spectrum of KCNQ1 and SCN5A mutations that cause LQTS and BS.
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