Status of HER-2 gene amplification in breast cancers from Native American women
نویسندگان
چکیده
منابع مشابه
Anatomic Pathology / HER-2 GENE AMPLIFICATION IN BREAST CANCER
We compared fluorescence in situ hybridization (FISH), immunohistochemical analysis, immunocytochemical analysis, and relative quantification assays using polymerase chain reaction (PCR) as methods for estimating HER-2 gene amplification and protein overexpression in fine-needle aspirate (FNA) specimens and paraffin-embedded tissue samples from 49 cases of breast cancer. FISH can be performed s...
متن کاملHER-2 gene amplification in human breast cancer without concurrent HER-2 over-expression
BACKGROUND Testing for human epidermal growth factor receptor-2 (HER-2) in breast cancer is performed by either immunohistochemistry (IHC) or in situ hybridization (ISH). The growth factor receptor-bound protein-7 (GRB7) gene is in close proximity to HER-2 on chromosome 17q11-12 and codes a signal transduction molecule shown to be an independent adverse marker in breast cancer. METHODS HER-2 ...
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A significant number of HER-2 amplified breast cancers is effectively treated by trastuzumab and further shows receptor-enhanced chemosensitivity. Recent studies have postulated transactivation of HER-2 also in tumors expressing phosphorylated/activated HER-2 (pHER-2) and of the HER-3/HER-4 ligand heregulin (HRG), independent of HER-2 amplification. As a consequence, a subset of tumors without ...
متن کاملCorrection for chromosome-17 is critical for the determination of true Her-2/neu gene amplification status in breast cancer.
PURPOSE Trastuzumab is the cornerstone for treatment of women with HER2-overexpressing breast cancer, both in the adjuvant and in the metastatic settings. The accurate assessment of HER2 is, therefore, critical to identifying patients who may benefit from trastuzumab-based therapy. This project aimed to determine the optimal scoring method for fluorescence in situ hybridization (FISH) assay. ...
متن کاملRisk of breast cancer according to the status of HER-2/neu oncogene amplification.
We examined risk factors for breast cancer after subdividing cases based on the presence of HER-2/neu oncogene amplification in their tumors. Data were from the Carolina Breast Cancer Study, a population-based, case-control study of 577 invasive breast cancer patients, diagnosed during 1993-1996 and ages 20-74 years, and 790 controls frequency-matched on race and age. Information on breast canc...
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ژورنال
عنوان ژورنال: Cancer Genetics and Cytogenetics
سال: 2008
ISSN: 0165-4608
DOI: 10.1016/j.cancergencyto.2008.08.004