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CLIN CHEM:多重检测胰腺导管腺癌患者游离DNA 中KRAS突变的预后意义

2018-04-04 MedSci MedSci原创

游离DNA(cfDNA)可以作为预测临床结果的潜在生物标志物,但其在胰腺导管腺癌(PDAC)中的价值尚未得到充分评估。本研究的目的是评估PDAC患者游离DNA 中多重KRAS突变定量分析的临床适用性。 共有106名PDAC患者参加了这项前瞻性研究。使用液滴数字PCR试剂盒(Bio-Rad公司)检测血浆样品中的KRAS突变的浓度和片段。 结果显示,在96.1%的组织样本中可检测到KRAS

游离DNA(cfDNA)可以作为预测临床结果的潜在生物标志物,但其在胰腺导管腺癌(PDAC)中的价值尚未得到充分评估。本研究的目的是评估PDAC患者游离DNA 中多重KRAS突变定量分析的临床适用性。 共有106名PDAC患者参加了这项前瞻性研究。使用液滴数字PCR试剂盒(Bio-Rad公司)检测血浆样品中的KRAS突变的浓度和片段。 结果显示,在96.1%的组织样本中可检测到KRAS突变。80例(80.5%)cfDNA存在KRAS突变,中位KRAS突变浓度为0.165份/μL,中位数片段丰度为0.415%。多变量分析表明,KRAS突变浓度[风险比(HR),2.08; 95%CI,1.20-3.63]和KRAS片段(HR,1.73; 95%CI,1.02-2.95)是无进展生存的重要因素。KRAS突变浓度(HR,1.97; 95%CI,1.05-3.67)对总体生存有预后意义。亚组分析显示KRAS突变浓度和片段丰度显著影响可切除PDAC的无进展生存期(P = 0.016)。此外,当与癌症生物标志物CA19-9组合时,cfDNA中的KRAS突变浓度显示出预测总体存活的附加益处。 本研究表

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    2018-04-06 yinhl1978
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    2018-04-06 LSJ116
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    2018-04-06 bioon7

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