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AJOG:产前诊断领域,核型分析 vs. 基因组杂交(Meta)

2015-03-05 Mechront MedSci原创

产前诊断作为新兴领域,虽然年轻,但其发展势头迅猛。随着环境的恶化、孕妇的高龄化以及其他因素,缺陷儿越来越多,大体结构上的畸形可以通过超声得到明确诊断,可是对于染色体或是基因层面的异常,却需要依靠更高科技的技术。目前对于染色体结构、数目异常诊断的金标准是核型分析,同时还有无创DNA、荧光原位杂交FISH、RT-PCR、比较基因组杂交CGH、基因芯片等众多基因领域新兴的技术手段。近期Saldarria

产前诊断作为新兴领域,虽然年轻,但其发展势头迅猛。随着环境的恶化、孕妇的高龄化以及其他因素,缺陷儿越来越多,大体结构上的畸形可以通过超声得到明确诊断,可是对于染色体或是基因层面的异常,却需要依靠更高科技的技术。目前对于染色体结构、数目异常诊断的金标准是核型分析,同时还有无创DNA、荧光原位杂交FISH、RT-PCR、比较基因组杂交CGH、基因芯片等众多基因领域新兴的技术手段。


近期Saldarriaga W等人检索了由1980-01至2014-03间,PubMed、 EMBASE、CENTRAL等众多数据库收录的关于产前诊断领域核型分析和CGH比较的研究,行meta分析,以探究两种方式检测染色体数目和结构异常时的精确性。其研究类型包括横断面研究、队列研究和病例对照研究,研究对象均涉及绒膜绒毛取样活检术、羊膜腔穿刺术或脐血穿刺术,提取样本对胎儿进行CGH和核型分析。 

研究者们共检索到137篇,根据事先制定的纳入标准筛选后,其中有6篇纳入系统回顾,有5篇用于meta分析。其分析结果表明,比较基因组杂交CGH:敏感性 0.939(95% CI 0.838-0.979),异质性I2=82%;特异性 0.999(95% CI 0.998-1.000),I2=0%;阴性似然比 0.050(95% CI 0.015-0.173),I2=0%;阳性似然比 1346.123(389-4649),I2=0%。

核型分析:敏感性 0.626(95% CI 0.408-0.802),异质性I2=93%;特异性 0.999(95% CI 0.998-1.000),I2=0%;阴性似然比 0.351(95% CI 0.101-1.220),I2=0%;阳性似然比 841(226-3128),I2=10%。

该Meta分析表明,在产前诊断领域,对于染色体数量和结构异常的检测,比较基因组杂交CGH较之传统的金标准核型分析有明显的优势,CGH具有更高的敏感性,其特异性与核型分析不相上下。

原始出处:

Saldarriaga W1, García-Perdomo HA2, Arango-Pineda J3, Fonseca J3.Karyotype versus genomic hybridization for the prenatal diagnosis of chromosomal abnormalities: a metaanalysis.Am J Obstet Gynecol. 2015 Mar;212(3):330.e1-330.e10. doi: 10.1016/j.ajog.2014.10.011. Epub 2014 Oct 18.

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    2015-11-30 一闲
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    2015-03-07 xiaoai5777

    高通量

    0

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    2015-03-07 qilu_qi
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    2015-03-25 guojianrong
  6. [GetPortalCommentsPageByObjectIdResponse(id=1895787, encodeId=e0f41895e873b, content=<a href='/topic/show?id=4a391158248' target=_blank style='color:#2F92EE;'>#MET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11582, encryptionId=4a391158248, topicName=MET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18fc139, createdName=一闲, createdTime=Mon Nov 30 13:58:00 CST 2015, time=2015-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=17909, encodeId=0de11e909a6, content=高通量, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=36a81612921, createdName=xiaoai5777, createdTime=Sat Mar 07 22:21:00 CST 2015, time=2015-03-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1400079, encodeId=6b1514000e9cf, content=<a href='/topic/show?id=b3fb24436e8' target=_blank style='color:#2F92EE;'>#产前诊断#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=24436, encryptionId=b3fb24436e8, topicName=产前诊断)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=02c72243675, createdName=bioon2, createdTime=Sat Mar 07 12:58:00 CST 2015, time=2015-03-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1502454, encodeId=3e7c150245432, content=<a href='/topic/show?id=ef4b2441971' target=_blank style='color:#2F92EE;'>#产前#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=24419, encryptionId=ef4b2441971, topicName=产前)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b49a9545081, createdName=qilu_qi, createdTime=Sat Mar 07 12:58:00 CST 2015, time=2015-03-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1887428, encodeId=dd10188e428f4, content=<a href='/topic/show?id=d56611584ec' target=_blank style='color:#2F92EE;'>#Meta#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11584, encryptionId=d56611584ec, topicName=Meta)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8f4110, createdName=guojianrong, createdTime=Wed Mar 25 19:58:00 CST 2015, time=2015-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=17819, encodeId=efb81e8197d, content=CGH价钱贵了,并且现在各种新技术出来,让它处在高不成低不就的尴尬位置, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=218.207.2.**, createdTime=Fri Mar 06 13:36:00 CST 2015, time=2015-03-06, status=1, ipAttribution=)]
    2015-03-06 218.207.2.**

    CGH价钱贵了,并且现在各种新技术出来,让它处在高不成低不就的尴尬位置

    0

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