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JCO:横纹肌肉瘤的基因组特征及与临床预后的相关性

2021-06-26 Nebula MedSci原创

迄今为止,临床注释横纹肌肉瘤肿瘤基因组特征的最大研究来啦~

横纹肌肉瘤是儿童最常见的软组织肉瘤。尽管进行了积极治疗,但转移或复发性患者的 5 年生存率仍然很低;而且,目前除了PAX-FOXO1融合基因,没有可用于风险分层的基因组标记。

Jack F. Shern等人提出了一项国际联盟研究,旨在确定驱动突变的发生率及其与临床预后的相关性。

对儿童肿瘤组试验(1998-2017)和英国恶性间充质肿瘤和 RMS2005(1995-2016)试验中收集的患者肿瘤样本进行定制捕获测序,筛选突变、插入缺失、基因缺失和扩增,并进行了生存分析。

TP53突变与预后的相关性

共有641位患者的DNA可进行分析。中位突变个数为1个突变/肿瘤。50%以上的FOXO1融合阴性的病例可观察到任何RAS通路基因突变,21%的FOXO1融合阴性的病例未发现推测的驱动突变。BCOR(15%)、NF1(15%)和TP53(13%)突变的发生率高于既往报道,而且TP53突变与FOXO1融合变异阴性和阳性的病例的更差预后均相关。

有趣地是,RAS突变主要发生在<1 岁的婴儿中(64% 的病例)。除了既往描述过的年龄较大、头颈部原发部位和较差的生存率之外,MYOD1突变还与组织学模式相关。最后,研究人员还提供了可搜索的配套数据库,包含所有的遗传变异、临床注释(包括生存数据)

总之,这是迄今为止临床注释横纹肌肉瘤肿瘤基因组特征的最大研究,并提供了可改善风险分层的预后遗传特征。

原始出处:

Jack F. Shern, et al. Genomic Classification and Clinical Outcome in Rhabdomyosarcoma: A Report From an International Consortium. Journal of Clinical Oncology. June 24, 2021. https://ascopubs.org/doi/full/10.1200/JCO.20.03060

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    2022-05-19 lidong40
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    2021-11-05 1482963am12暂无昵称

    学习的,谢谢分享

    0

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    2021-06-27 小小医者

    #横纹肌肉瘤##基因组#特征,随着高通量测序,以及CGP等技术的普及,未来人类对肿瘤的基因组突变信息了解越来越多,#精准医学#就变成现实

    0

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    2021-06-27 JZ Yang

    RAS通路50%

    0

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