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BMC Cancer:EGFR/PI3K/PTEN轴与三阴乳腺癌预后间关系

2015-12-21 Seven L 译 MedSci原创

三阴乳腺癌 (TNBC) 是乳腺癌中预后很差的一种,更好的理解其生物学可以帮助靶向治疗的发展,改善患者预后。研究者对TNBC患者 EGFR/PI3K/PTEN 轴进行了广泛分析,以探究抗EGFR和抗PI3K靶向治疗的可行性等。研究共纳入了204名TNBC患者的样本,分析其 EGFR基因扩增、EGFR 蛋白表达、PIK3CA和PTEN改变(EGFR下游通路基因)、临床病理以及预后。研究数据显示,20

三阴乳腺癌 (TNBC) 是乳腺癌中预后很差的一种,更好的理解其生物学可以帮助靶向治疗的发展,改善患者预后。

研究者对TNBC患者 EGFR/PI3K/PTEN 轴进行了广泛分析,以探究抗EGFR和抗PI3K靶向治疗的可行性等。研究共纳入了204名TNBC患者的样本,分析其 EGFR基因扩增、EGFR 蛋白表达、PIK3CA和PTEN改变(EGFR下游通路基因)、临床病理以及预后。

研究数据显示,204份TNBC样本中发现了18份(8.9 %) EGFR扩展的样本,且其EGFR表达更高。发现有PIK3CA突变的样本中,有14份位于外显子9区域(6.7 %),17份在外显子20 (8.3 %)。PIK3CA 突变,尤其是外显子9区域突变与 I-II期肿瘤显著相关。43份 (21.50 %) 样本中检测到PTEN缺失,与III期肿瘤显著相关(p < 0.001)。单变量分析显示,无复发生存期(RFS)、T和N分期与外显子9 PIK3CA突变密切相关。整体生存期与T和N分期以及辅助化疗密切相关,数据显示70.3%的患者进行了辅助化疗。多因素分析显示,T分期、N分期、外显子9  PIK3CA突变、高水平 EGFR蛋白表达是RFS的不良预后独立预测因素,不过辅助化疗可以使该结果稍好一点。

研究结果表明,EGFR蛋白的高度表达和PIK3CA外显子9区域的突变是TNBC患者的独立预测因素。抗PI3K靶向治疗的有效性还需要更多的研究去探究。

原始出处:

Jacot W, Mollevi C,et al.High EGFR protein expression and exon 9 PIK3CA mutations are independent prognostic factors in triple negative breast cancers.BMC Cancer. 2015 Dec 18;15(1):986.


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    2015-12-30 xyfg98

    0

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    2015-12-26 hixiaoluo

    值得收藏,学习,谢谢分享

    0

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    2015-12-23 xiaogang317
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    2015-12-23 liuyiping

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