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Blood:复杂核型(CK)预示CLL患者预后不良

2019-01-30 MedSci MedSci原创

近期有证据表明,复杂核型(CK),即存在3种及以上通过染色体显带分析(CBA)所确定的染色体异常(包括结构及数目变异),可能与慢性淋巴细胞白血病(CLL)的治疗方案制定相关。但是,临床上还不能常规应用CBA。在一个包含5290位有CBA数据的患者的回顾性研究中,PanagiotisBaliakas等人对CK在CLL中的临床生物学相关性以及临床影响进行研究。研究人员发现携带5种及以上变异的患者,被划

近期有证据表明,复杂核型(CK),即存在3种及以上通过染色体显带分析(CBA)所确定的染色体异常(包括结构及数目变异),可能与慢性淋巴细胞白血病(CLL)的治疗方案制定相关。但是,临床上还不能常规应用CBA。

在一个包含5290位有CBA数据的患者的回顾性研究中,PanagiotisBaliakas等人对CK在CLL中的临床生物学相关性以及临床影响进行研究。研究人员发现携带5种及以上变异的患者,被划为高-CK,临床预后均不良,且与临床分期、TP53突变(17p缺失和/或TP53突变,TP53abs)以及高突变(M-CLL)或无突变(U-CLL)免疫球蛋白重变量基因(IGHV)的表达无关。

研究人员进一步分析携带3或4种染色体异常(低-CK和中-CK)的CK病例发现,其仅在TP53abs突变存在时病情才发生进展。与此相反,携带+12,+19的CK患者表现出明显的惰性。

在CK、TP53abs和IGHV基因体细胞高突变状态的基础上,研究人员提出了一种新的分级模型,其中高-CK患者预后最差,缺乏CK或TP53abs的M-CLL患者和携带+12,+19的CK患者总体存活期最长。

总而言之,染色体变异≥5的高-CK提示预后不良,且独立于其他生物标志物。但是否可将高CK用作CLL的危险分层指标,还需要进行前瞻性临床试验。


原始出处:

PanagiotisBaliakas, et al.Cytogenetic complexity in chronic lymphocytic leukemia: definitions, associations and clinical impact.Blood 2019 :blood-2018-09-873083; doi: https://doi.org/10.1182/blood-2018-09-873083 

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    2019-02-01 SCI我的梦

    学习分享

    0

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    2019-01-31 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

    0

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    2019-01-31 yjs木玉

    好好好好好好

    0

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