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清华大学研发团队回应“滴血测癌”:系媒体误读

2017-05-03 04:31:51   新京报

“增加医生诊疗判断依据”

新京报:肿瘤标志物的研究,从什么时候开始?

付彦:从基础研究算起来,2005年左右,已经开始在实验室进行机理研究,首次有成型的产品,在2011年。

新京报:目前的研究成果有什么社会意义?

付彦:团队发现的热休克蛋白90,作为一种全新肿瘤标志物,在肺癌及肝癌检测的灵敏度和准确度超过了现有的常用肺癌和肝癌标志物。比如,在肝癌的检测中,灵敏度达到了93%,比常用的肝癌标志物AFP灵敏度高出近一倍,这是目前世界上最好的数据。团队的研究成果,为医生的诊疗增加了有价值的信息和判断依据,是辅助肿瘤检测的新武器,有助于提高我国癌症的诊疗水平。目前已有很多人因检测热休克蛋白90a而获益。

“将误差率控制在万分之一”

新京报:有人质疑,血液不能够作为肿瘤的检测物质?

付彦:这是没有根据的,在日常医学临床检测中,血液标本的用途十分广泛,目前临床常用的肿瘤标志物都是以血液为检测对象的。

热休克蛋白90是一个全新的肿瘤检测指标,监测肿瘤的原理与其他标志物有差别。

新京报:未来团队有什么目标?

付彦:还是希望能够在灵敏度和准确率上有进一步的突破。比如,目前对于肝癌检测的灵敏度是93%,就是在一百个肝癌患者中可能有7个漏检,未来我们希望将这一数值控制在千分之一,甚至万分之一。

链接

科研成果让检测成本降低

“肿瘤标志物”又称“肿瘤标记物”,是指特征性存在于恶性肿瘤细胞,或由恶性肿瘤细胞异常产生的物质,或是宿主对肿瘤的刺激反应而产生的物质,并能反映肿瘤发生、发展,检测肿瘤对治疗反应的一类物质。

新京报记者了解到,肿瘤标志物存在于肿瘤患者的组织、体液和排泄物中,能够用免疫学、生物学及化学的方法检测到。

付彦告诉新京报记者,目前对于肿瘤检测的诸多方式中,对标志物进行检测成本最低,实施起来最方便。此前,罗永章在接受媒体采访时称,由于射线剂量大和费用较高等原因,CT等影像学检测方法,并不适合经常性地使用,因此,肿瘤标志物对于癌症病人愈后和疗效评价具有重要应用价值。

新京报记者了解到,以肺癌为例,目前“低剂量螺旋CT”是一种经典筛查手段,但尽管如此,“低剂量螺旋CT”仍有96%的假阳性率。付彦称,结合热休克蛋白90的肿瘤标志物联合检测,将有助于提升检测准确率。

责任编辑:穆启春 CN063
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