accounts for 27% of all cancers. according to the national cancer institutes' reports, the risk of breast cancer among american women is 13%. the current study aims to evaluate the level of risk perception of breast cancer and to identify its related factors amongst female employees. methods: this project was a cross-sectional study and participants were female employees working in hospitals an...

Enhanced sensitivity to the chromosome-damaging effects of ionizing radiation is a feature of many cancer-predisposing conditions. It has been suggested that women with breast cancer are deficient in the repair of radiation-induced DNA damage. We have now investigated whether mutagen sensitivity is related to mutations in the breast cancer gene BRCA1. We studied the induction and repair of DNA ...

Backgrounds: Chemotherapy for treatment of breast cancer uses some drugs to target and destroy the cancer cells. However, most of antineoplastic treatments are non-specific and the innate cells will be damaged. In this study, the effect of Adriamycin/Cytoxan (AC) chemotherapy on status of antioxidant enzymes and Se levels in breast cancer patients was evaluated. Methods: A prospective study, i...

Enhanced sensitivity to the chromosome-damaging effects of ionizing radiation is a feature of many cancer-predisposing conditions. It has been suggested that women with breast cancer are deficient in the repair of radiation-induced DNA damage. We have now investigated whether mutagen sensitivity is related to mutations in the breast cancer gene BRCA1. We studied the induction and repair of DNA ...

Reproductive history and exogenous hormonal exposures are acknowledged risk factors for breast cancer in the general population. In women at increased breast cancer risk for genetic predisposition or positive family history, data regarding these risk factors are limited or conflicting, and recommendations for these categories are unclear. We evaluated the characteristics of reproductive life in...

1. Ataxia Telangiectasia (includes Ataxia Telangiectasia 12 Complementation Groups A, C, D, E, Louis–Barr Syndrome) 2. Basal Cell Nevus Syndrome, Nevoid Basal Cell 18 Carcinoma Syndrome, or Gorlin Syndrome 3. Beckwith–Wiedemann Syndrome 19 (Exomphalos–Macroglossia–Gigantism Syndrome) 4. Birt–Hogg–Dubé Syndrome 20 5. Bloom Syndrome 21 6. Breast/Ovarian Cancer, Hereditary (BRCA1) 22 7. Breast/Ova...

The germline mutations of breast cancer susceptibility genes 1 (BRCA1) and breast cancer susceptibility genes 1 (BRCA2) have been associated with a significant increase in breast cancer risk and certain other cancers. Among the most known mutations in these tumor suppressor genes are 5382insC and 185delAG in BRCA1 and 6174delT in BRCA2. The aim of the current study was to investigate the freque...

Concurrence of breast cancer or thymoma with other malignancies in individual families is often observed, but the familial concurrence of breast cancer and thymoma has not yet been reported. Herein we reported a family encompassing five breast/ovarian cancer patients and two thymoma patients. Whole genome linkage analysis detected no haplotype co-segregating with both types of the tumors. In al...

A G to C polymorphism (rs2910164) is located within the sequence of miR-146a precursor, which leads to a change from a G:U pair to a C:U mismatch in its stem region. The predicted miR-146a target genes include BRCA1 and BRCA2, which are key breast and ovarian cancer genes. To examine whether rs2910164 plays any role in breast and/or ovarian cancer, we studied associations between this polymorph...

BACKGROUND Several studies have identified rare genetic variations responsible for many cases of familial breast cancer but their contribution to total breast cancer incidence is relatively small. More common genetic variations with low penetrance have been postulated to account for a higher proportion of the population risk of breast cancer. METHODS AND RESULTS In an effort to identify genes...