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JCO:通过靶向质谱**鉴别胰腺癌囊性前病变的研究

2017-11-23 MedSci MedSci原创

大家都知道胰腺囊性病变经常在影像学检查时被偶然发现,但是可能有一半是胰腺癌的征兆。因此,准确的鉴别诊断就显得尤为重要。但遗憾的是,目前的诊断方法并不能强有力地识别癌前病变和恶性胰腺囊性病变。2017年11月22日在著名肿瘤学杂志上JCO则发表的一篇文章旨在提高鉴别诊断的准确性。

大家都知道胰腺囊性病变经常在影像学检查时被偶然发现,但是可能有一半是胰腺癌的征兆。因此,准确的鉴别诊断就显得尤为重要。但遗憾的是,目前的诊断方法并不能强有力地识别癌前病变和恶性胰腺囊性病变。2017年11月22日在著名肿瘤学杂志上JCO则发表的一篇文章旨在提高鉴别诊断的准确性。

研究人员采用常规超声引导下抽吸囊液样本进行分析。在一个24例患者的队列中,通过探索性蛋白质组学的方法确定了8个恶性可能和高级异型增生/癌症的候选生物标记物。随后,利用30个重标肽和平行反应监测质谱进行了定量分析,在80例的队列中进行了测试,并在68例患者的验证队列中进行了前瞻性评估。终点为外科病理诊断/临床随访。

研究结果显示检测恶性可能最佳的一组标记是一组来自musin-5AC和mucin-2的肽段,能够在验证队列中区分出癌前病变/恶性病变与良性病变,准确率97%(95%CI,89%-99%)。这一结果与标准分析相一致:囊液癌胚抗原(61%;95%CI.46%-74%;P<0.001)和细胞学(84%;95%CI,71%-92%;P=0.02)。结果蛋白质mucin-5AC及前列腺干细胞抗原能够以96%的准确性识别出高级别异型增生/肿瘤(95%CI,90%-99%),并能发现95%恶性/严重不典型增生,而癌胚抗原和细胞学分别为35%和50%(P<0.001;P=0.003).

由上述研究可以看出仅对三种囊液生物标记物做靶向的质谱分析,就可以以高度准确性来识别和评估胰腺囊性变及胰腺癌。后续需要其他试验来研究该方法是否有助于及时诊断癌症、成功干预及预防

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    2017-11-28 lidong40
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    2017-12-29 wolongzxh
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    2017-11-25 jeanqiuqiu
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