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宁夏回族乳腺癌BRCA1基因突变与 ER、PR、CerbB-2表达的关系

, PP. 1135-1137

Keywords: 乳腺癌,BRCA1基因,突变,测序法,免疫组化

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Abstract:

目的研究宁夏地区回族散发性乳腺癌组织BRCA1(breastcancersusceptibilitygene1)基因突变情况,并分析其与ER、PR和CerbB-2表达的关系。方法取60例回族乳腺癌石蜡包埋组织标本为实验组,15例回族乳腺良性病变纤维腺病及纤维腺瘤非癌组织为对照组。运用PCR和DNA直接序列测定法检测所有标本BRCA1基因部分外显子突变情况。回顾性分析60例乳腺癌患者雌激素受体ER、孕激素受体PR和癌基因C-erB-2表达情况。结果60例回族乳腺癌中BRCA1基因发现10例突变;有5例三阴乳腺癌,其中突变患者中有3例三阴乳腺癌,其比例为30%(3/10),非突变乳腺癌患者为4%(2/50),差异有统计学意义(χ2=4.364,P=0.037);乳腺癌患者ER和PR阳性表达率与淋巴结转移率呈负相关,差异有统计学意义(χ2=5.735,P<0.05;χ2=5.984,P<0.05)。对照组未检出突变。结论BRCA1基因突变在宁夏回族乳腺癌发生密切相关,免疫组化指标ER、PR和C-erbB-2对检测乳腺癌治疗方案的制定和预后评估有重要临床意义。

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