血管内皮生长因子在胃肠胰腺神经内分泌肿瘤中的表达及其临床意义

来源 :第八届中国肿瘤内科大会、第三届中国肿瘤医师大会暨中国抗癌协会肿瘤临床化疗专业委员会2014年学术年会 | 被引量 : 0次 | 上传用户:l_zhanghk
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目的:探讨血管内皮生长因子(vascular endothelial growth factor,VEGF)在胃肠胰腺神经内分泌肿瘤(gastroenteropancreatic neuroendocrine tumor,GEP-NET)中的表达及其临床意义. 方法:利用Dana-Farber癌症研究所(Dana-Farber Cancer Institute,DFCI)785例神经内分泌肿瘤研究中的195例GEP-NET,构建组织芯片(tissue microarray,TMA).收集整理发病前的暴露因子、临床病理特征、随访.免疫组织化学法(immunohistochemistry,IHC)检测VEGFA、VEGFR1(FLT1)和VEGFR2(KDR)的表达.利用SARS软件进行统计分析。 结果:173例原发GEP-NET中,VECFA高表达与总生存期(overall survival,OS)缩短有关[多变量风险比(hazard ratio,HR),2.14;P=0.03]。VEGFR1高表达与OS增加有关(多变量HR,0.46;P=0.03)。45例原发小肠神经内分泌肿瘤 (small intestinal neuroendocrine tumor,SINET) 中, VEGFR2高表达与无病生存期 (disease freesurvival,DFS)缩短有关(多变量HR,4.17;P=0.026)。76例转移性SINET中,VEGFA高表达与OS缩短有关(多变量HR,3.13;P=0.013)。19例贝伐单抗治疗SINET患者中9例VEGFA-高表达SINET的PFS有一定程度的增加(中值PFS: VEGFA-高表达12.6月,VEGFA-低表达6.7月)。 结论:VEGFA和VEGFR2是GEP-NET、SINET较差预后相关的分子生物标记物,VEGFR1是GEP-NET、SINET较好预后相关的分子生物标记物,VEGF通路相关因子可能作为预测贝伐单抗对SINET患者治疗效果的分子生物标记物。
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