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乳腺癌17号染色体多体与HER2基因扩增及预后因素的相关性 被引量:1

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摘要 目的分析乳腺癌17号染色体多体与HER2基因扩增及预后因素的相关性,探讨其临床意义。方法采用免疫组化(IHC)技术检测120例浸润性乳腺癌患者HER2蛋白表达情况,选择IHC结果为(++)及(+++)的患者92例行荧光原位杂交(FISH)检测其HER2基因扩增及17号染色体多体。结果 58.7%(54/92)的患者出现HER2基因的扩增,免疫组化(++)、(+++)的病例所占比例分别为72.8%(67/92)、27.2%(25/92);FISH与免疫组化检测在HER2蛋白(++)、(+++)的符合率分别为47.8%(32/67)、88%(22/25);20.7%的患者存在17号染色体多体,HER2基因扩增组出现17号染色体多体的概率比HER2基因无扩增组更高(P<0.01);存在17号染色体多体的患者其淋巴结转移率更高;17号染色体多体与肿瘤最大直径及组织学分级无相关性。结论 HER2免疫组化(++)的患者建议行FISH检测。17号染色体多体与HER2基因扩增相关,且可能是导致HER2基因扩增的原因之一。17号染色体多体可能提示乳腺癌的预后。
出处 《广东医学》 CAS CSCD 北大核心 2012年第13期1949-1952,共4页 Guangdong Medical Journal
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