C-erbB-2在乳腺癌中可以出现较多较强的细胞质阳性,但是我们的判定标准是关注细胞膜,而且是完整的细胞膜阳性。给你FDA用DAKO herceptin test的阳性判定标准:0级在肿瘤细胞中无阳性染色或者小于10%肿瘤细胞出现有细胞膜染色。(No staining is observed or membrane staining is observed in less than 10% of tumor cells)
1+===大于10%的肿瘤细胞中出现微弱或者不完整的细胞膜染色。(A faint/barely perceptible partial membrane staining in more than 10% of tumor cells)
2+===超过10%的肿瘤细胞中出现弱到中等强度完整细胞膜染色。(A weak to moderate complete membrane staining in more than 10% of tumor cells)
3+===在大于30%的肿瘤细胞中出现中到高等强度完整细胞膜阳性染色,(A moderate to strong complete membrane staining in more than 30% of tumor cells)
计数 结果 0 阴性 1+ 阴性 2+ 弱阳性 3+ 强阳性
HER2过表达情况适合于在进行规范的化疗治疗失败后,采用人源性的单克隆抗体Herceptin®治疗有较好的相关性。(HER2 overexpression is associated with a varied positive response to the humanized monoclonal antibody Herceptin® in patients that have failed standard chemotherapy treatment )。