布鲁加达综合征患者SCN5A变体的临床特征
Sho Okamura1, Hidenori Ochi2,3, Mika Nakashima1
1Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
SCN5A致病变体是布鲁加达综合征 (BrS) 中心脏事件的独立风险因素. 在SCN5A中未知意义的变异 (VUS) 与更有症状的患者有关,信号平均ECG有助于风险分层.
科学领域:
- 心血管遗传学 心血管遗传学
- 电子生理学 电子生理学
- 基因诊断 基因诊断 基因诊断
背景情况:
- SCN5A基因突变是布鲁加达综合征 (BrS) 的最常见原因.
- 在SCN5A中解释良性或未知临床意义 (VUS) 的变异仍然是患者管理的挑战.
- 对BrS的遗传检测需要清楚了解SCN5A变体的致病性.
研究的目的:
- 研究SCN5A变体与布鲁加达综合征患者的临床表现之间的关联.
- 为了澄清SCN5A变异的临床意义,包括VUS,在布鲁塞尔.
- 确定SCN5A变体的BrS患者心脏事件和症状的预测因素.
主要方法:
- 在239名被诊断为布鲁加达综合征的患者中重新测序SCN5A基因.
- 分析SCN5A变异与临床特征,12心电图和信号平均心电图参数相结合的分析.
- 多变量分析以确定心脏事件和症状的独立风险因素.
主要成果:
- 发现了84种SCN5A变异:55种良性,7种致病,22种VUS.
- 在SCN5A VUS或致病变体的患者中观察到更高的症状患者比例和更高的女性发病率.
- SCN5A致病变体,较长的r-J间隔和碎片化的QRS独立地与心脏事件相关.
结论:
- SCN5A致病变体是BrS中心脏事件的独立风险因素.
- 虽然SCN5A VUS不是心脏事件的独立风险因素,但与症状呈现增加有关.
- 信号平均化心电图对于SCN5A VUS.brS患者心脏事件风险分层至关重要.
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