Blood:慢性淋巴细胞白血病患者癌基因突变分析的临床应用

2018-01-25 MedSci MedSci原创

中心点:癌基因突变可影响用来那度胺治疗的CLL患者的治疗反应和存活期。对癌基因突变进行评估,或许可用于对CLL患者进行风险分层。摘要:来那度胺在临床上用于治疗慢性淋巴细胞白血病具有良好效果,但其用于携带癌基因突变的CLL患者的治疗效果是否发生改变尚不明确。现有研究人员来自于102位对治疗敏感的CLL患者(TN患者)和186位复发性/难治性CLL患者(R/R患者)的样本的295个癌基因进行靶向测序,

中心点:

癌基因突变可影响用来那度胺治疗的CLL患者的治疗反应和存活期。

对癌基因突变进行评估,或许可用于对CLL患者进行风险分层。

摘要:

来那度胺在临床上用于治疗慢性淋巴细胞白血病具有良好效果,但其用于携带癌基因突变的CLL患者的治疗效果是否发生改变尚不明确。现有研究人员来自于102位对治疗敏感的CLL患者(TN患者)和186位复发性/难治性CLL患者(R/R患者)的样本的295个癌基因进行靶向测序,上述患者均在本研究机构接受以来那度胺为基础的化疗。

突变频率最高的基因是SF3B1(15%)、NOTCH1(14%)和TP53(14%),R/R患者患者TP3突变要明显多于TN患者。突变型IGHVMYD88突变(p=0.05)和del(13q)(p=0.028)发生率增加相关,而未突变型IGHV则与NOTCH1(p=0.035)和XPO1(p=0.047)的突变率增加相关。在所有接受来那度胺治疗的患者中,del(17p)(p≤0.001)、del(11q) (p=0.032)和复杂核型(p=0.022),与TP53KRASDDX3X(p分别是≤0.001、0.034和≤0.001)的突变一样,均与总体反应(OR)降低相关。

携带SF3B1MGA突变的患者OR明显降低(p值分别是0.025/0.035)。携带del(17q)和TP53突变的TN和R/R患者总体存活率(OS)和无进展存活期(PFS)均更差。在R/R患者中,复杂核型和SF3B1突变可降低患者OS和PFS,而DDX3X突变只降低PFS。Weibull多变量回归分析提示TP53异常——del(17q)和(或)TP53突变——与复杂核型和SF3B1突变一样,均与R/R队列的OS更差相关。

总而言之,了解CLL患者癌基因突变可使得本已全面的风险分层更加全面,同时可增加对治疗反应和预后的估计。

原始出处:

Koichi Takahashi,et al. Clinical implications of cancer gene mutations in patients with chronic lymphocytic leukemia treated with lenalidomide. Blood  2018  :blood-2017-11-817296;  doi: https://doi.org/10.1182/blood-2017-11-817296

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    2018-01-27 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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    2018-01-25 changjiu

    学习一下谢谢

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