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Blood:多发性骨髓瘤17p缺失的亚克隆比例越高,患者预后越差

2019-02-07 MedSci MedSci原创

缺失跨域TP53基因的染色体17p(del17p)与多发性骨髓瘤(MM)的预后不良相关,但del17p癌克隆分数(CCF)的预后意义尚不明确。Anjan Thakurta等人对一大批携带不同del17p水平的新诊断的MM (NDMM)患者进行了统一的细胞学评估。CCF的增殖变化与生存期缩短相关,数据库中将0.55CCF设定为健康阈值。根据0.55CCF阈值进行分层,与低风险患者相比,高风险患者预后

缺失跨域TP53基因的染色体17p(del17p)与多发性骨髓瘤(MM)的预后不良相关,但del17p癌克隆分数(CCF)的预后意义尚不明确。

Anjan Thakurta等人对一大批携带不同del17p水平的新诊断的MM (NDMM)患者进行了统一的细胞学评估。CCF的增殖变化与生存期缩短相关,数据库中将0.55CCF设定为健康阈值。

根据0.55CCF阈值进行分层,与低风险患者相比,高风险患者预后差,差异且具有统计学差异;高风险和低风险患者的中位无进展存活期(PFS)和总体存活期(OS)分别为14和32个月、23.1和76.2个月。

对NDMM患者的全外显子测序数据进行分析发现,除了del17p CCF阈值,TP53的缺失/突变对高风险分层也至关重要。此外,研究人员对三个数据库进行Meta分析验证了CCF阈值对预测PFS和OS的稳定性。

择总而言之,本研究表明FISH和基于测序的方法的可行性:1)检测TP53缺失,2)评估CCF,3)明确0.55CFF阈值和TP53缺失对识别预后不良的携带del17p的NDMM患者至关重要。

原始出处:

Anjan Thakurta,et al. High sub-clonal fraction of 17p deletion is associated with poor prognosis in Multiple Myeloma. Blood 2019 :blood-2018-10-880831; doi: https://doi.org/10.1182/blood-2018-10-880831 

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    2019-09-08 jml2009
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    2019-12-30 aids221
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    2019-02-08 1209e435m98(暂无昵称)

    学习了,谢谢分享

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