Circulation:癌症治疗诱导型心肌病(CCM)!

2019-07-06 MedSci MedSci原创

癌症治疗诱导型心肌病(CCM)与累积药物暴露和已有的心血管疾病有关。但这两点不足以解释个体对CCM的敏感性差异。研究人员猜测罕见的心肌病基因变异与CCM有关。研究人员对3个队列(99位多种癌症患者、73位乳腺癌患者和41位急性髓系白血病儿童患者)的213位患者的心血管基因(包括9个预先明确的基因)。进行测序。对比CCM队列和癌症基因组图谱受试者(2053位)、健康志愿者(445位)和血统匹配的参考

癌症治疗诱导型心肌病(CCM)与累积药物暴露和已有的心血管疾病有关。但这两点不足以解释个体对CCM的敏感性差异。研究人员猜测罕见的心肌病基因变异与CCM有关。

研究人员对3个队列(99位多种癌症患者、73位乳腺癌患者和41位急性髓系白血病儿童患者)的213位患者的心血管基因(包括9个预先明确的基因)。进行测序。对比CCM队列和癌症基因组图谱受试者(2053位)、健康志愿者(445位)和血统匹配的参考人群之间稀有突变的发生率。

化疗后0.4-9年被诊断出CCM;其中90%的患者接受了蒽环类药物治疗。CCM成人患者的心血管风险因素与美国人群相似。在9个预先明确的基因上,CCM患者携带的罕见非同义变异多于对照组(P≤1.98e-04)。肌联蛋白截短变异(TTNtvs)占多数,7.5%的CCM患者携带该突变,而在癌症基因组图谱参与者中,仅1.1%人携带 (P= 7.36e-08),在健康志愿者中占0.7% (P= 3.42e-06),在参考人群中占0.6% (P= 5.87e-14)。携带TTNtvs的CCM成人患者心衰房颤和心肌复旧受损的概率高于未携带该变异的患者。此外,与人类数据一致,用蒽环类药物处理TTNtv小鼠和分离的TTNtv心肌细胞均表现出不同于野生型的持续性收缩功能障碍。

既往未被发现的与心肌病相关的基因上的罕见变异,尤其是TTNtvs,可增加儿童和成人患CCM的风险,也增加了成人发生心脏不良事件的风险。结合基因型、累积化疗剂量和传统的心血管危险因素,有助于提高对鉴别具有高CCM风险的癌症患者。

原始出处:

Pablo Garcia-Pavia,et al. Genetic Variants Associated With Cancer Therapy–Induced Cardiomyopathy. https://doi.org/10.1161/CIRCULATIONAHA.118.037934Circulation. 2019;140:31–41

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    2019-07-06 百草

    666

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    2019-07-06 940880420

    看了半天,没有理解

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    2019-07-06 orangesking

    0

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