- Meeting abstract
C-erbB-2 overexpression in primary breast cancer: relationship to clinical and histopathological parameters of patients with breast cancer
Breast Cancer Research volume 3, Article number: A50 (2001)
Amplification of c-erbB-2 oncoprotein has been described in 10-35% of primary breast cancers. Breast tumors with immunohistochemical overexpression of c-erbB-2 protein seem to be more aggressive. We evaluated the impact of c-erbB-2 overexpression on clinical and histopathological parameters of patients with breast cancer.
Primary tumors from 417 patients, who were treated at our Department for breast cancer, were studied. Immunostaining of c-erbB-2 oncoprotein was carried out utilizing the monoclonal antibody CB11.
C-erbB-2 overexpression was seen in 72 out of 417 (17%) of primary breast tumors. Patients with positive immunohistochemistry (IHC) for c-erbB-2 were significantly younger (P = 0.015), on average. The number of involved lymph nodes was higher in patients with positive IHC (P = 0.014). Nearly all IHC positive tumors (98.6%) were invasive ductal carcinomas, whereas all but one lobular carcinoma were negative. Tumors with negative IHC more often demonstrated positive estrogen (P = 0.001) and proges-terone (P = 0.001) expression than did patients with positive IHC. There was a significant relation of c-erbB-2 IHC and nuclear grading, Ki67 and p53. No association was found with menopausal status, tumor size, T-staging and presence of metastases.
(1) Overexpression of c-erbB-2 oncoprotein in primary breast cancer tumors may be an indicator of the extent of lymph node metastases in patients. (2) Lobular carcinomas represent a defined subtype of breast carcinomas.
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Regele, S., Vogel, F., Runnebaum, I. et al. C-erbB-2 overexpression in primary breast cancer: relationship to clinical and histopathological parameters of patients with breast cancer. Breast Cancer Res 3 (Suppl 1), A50 (2001). https://doi.org/10.1186/bcr378
- Breast Cancer
- Breast Tumor
- Breast Carcinoma
- Primary Breast Cancer
- Invasive Ductal Carcinoma