Serum HER2/ECD value in stage I and II early breast cancer - need of a lower cut-off?
Summary of "Serum HER2/ECD value in stage I and II early breast cancer - need of a lower cut-off?"
HER2 overexpression is well-established risk factor of worse prognosis in metastatic and early breast cancer. HER2 positivity can be determined from tumor tissue by immunohistochemical staining or by fluorescent in situ hybridization, or from serum by measuring concentration of HER2 receptor extracellular domain (HER2/ECD). HER2/ECD correlates well with worse prognosis in metastatic and locally advanced (stage III) disease if serum concentration is >15 ng/ml, but there are no consistent data for patients with early breast cancer. METHODS AND
41 patients with stage I and II breast cancer and 52 healthy controls were included into the study. HER2/ECD was determined before surgery and correlated with HER2/neu overexpression, Ki67, hormone receptor status and disease stage, and compared with value in healthy controls. Mean serum HER2/ECD concentration in patients was 8.62 ng/ml and 5.78 ng/ml in controls, and the difference was statistically significant (p = 0.000061). The best diagnostic cut-off value was 7.7 ng/ml, with 76.92% sensitivity and 72.92% specificity. Positive predictive value of the test was 69.77% and negative predictive value was 79.55%, with 74.71% of patients correctly classified. Serum HER2/ECD correlated with hormone receptors status, and no correlation with histological overexpression has been observed. CONCLUSION. Serum HER2/ECD concentration of ≥7.7 ng/ml has possible diagnostic value in stage I and II breast cancer. It should not be used as a determinant of HER2 positivity. Prognostic significance of HER2/ECD in early breast cancer, its correlation with hormone receptor status, and interconnection between hormone receptors and HER2 receptor signaling should be further analyzed, since it may have therapeutic implications.
Department of Oncology, University Hospital Center Zagreb, Zagreb, Croatia, firstname.lastname@example.org.
This article was published in the following journal.
Name: Wiener klinische Wochenschrift
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22113445
- DOI: http://dx.doi.org/10.1007/s00508-011-0099-4
The measurement of serum human epidermal growth factor receptor 2 (HER2) extracellular domain levels is a well-established method for evaluating whether a metastatic HER2-positive breast cancer patien...
In Indian women with breast cancer, the HER-2/neu gene is amplified in 30% of cases. Elevated serum HER-2/neu levels have been shown to be associated with a poor clinical prognosis and decreased survi...
The humanized monoclonal antibody pertuzumab prevents the dimerization of HER2 with other HER receptors, in particular the pairing of the most potent signaling heterodimer HER2/HER3, thus providing a...
Breast cancer characterized by overexpression of human epidermal growth factor receptor 2 (HER2) has been associated with more aggressive disease progression and a poorer prognosis. Although an improv...
Pathologic complete response (pCR) was noted to be prognostic in all but hormone receptor-positive (HR) breast cancer cases even when HER2 is overexpressed. Evocative data suggest that HER2-positive b...
RATIONALE: Studying the immune response to a vaccine made from HER2/neu protein may help doctors plan better treatment for patients with breast cancer that overexpresses HER2. PURPOSE: Th...
Primary Objectives: To evaluate the safety of MVA-BN-HER2 in women with HER-2-positive breast cancer. Secondary Objectives: To evaluate the ability of MVA-BN-HER2 to generate humo...
The purpose of this research study is to find out what effects (good and bad) TC or TAC has on you and your early stage HER2- breast cancer.
The main purpose of this study is to learn if adding bevacizumab to standard treatment with chemotherapy (docetaxel, doxorubicin, and cyclophosphamide) for early stage HER2-negative breast...
This is a phase II, single arm (no placebo, no randomization) study in patients who: - Have HER2 overexpressing Stage IIIB, IIIC or IV breast cancer - Have been treated with Hercep...
Medical and Biotech [MESH] Definitions
Carbohydrate antigen elevated in patients with tumors of the breast, ovary, lung, and prostate as well as other disorders. The mucin is expressed normally by most glandular epithelia but shows particularly increased expression in the breast at lactation and in malignancy. It is thus an established serum marker for breast cancer.
Metastatic breast cancer characterized by EDEMA and ERYTHEMA of the affected breast due to LYMPHATIC METASTASIS and eventual obstruction of LYMPHATIC VESSELS by the cancer cells.
Component of the NATIONAL INSTITUTES OF HEALTH. Through basic and clinical biomedical research and training, it conducts and supports research with the objective of cancer prevention, early stage identification and elimination. This Institute was established in 1937.
Methods to identify and characterize cancer in the early stages of disease and predict tumor behavior.
A infiltrating (invasive) breast cancer, relatively uncommon, accounting for only 5%-10% of breast tumors in most series. It is often an area of ill-defined thickening in the breast, in contrast to the dominant lump characteristic of ductal carcinoma. It is typically composed of small cells in a linear arrangement with a tendency to grow around ducts and lobules. There is likelihood of axillary nodal involvement with metastasis to meningeal and serosal surfaces. (DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1205)