Active clinical trials for "Breast Neoplasms"

This study aims to perform x-ray diffraction analysis of blinded hair samples from women with a documented health status, to validate the previous findings of James et al who described that x-ray diffraction patterns of human hair can distinguish samples from healthy subjects from those of diseased subjects, specifically those suffering from breast cancer. The primary hypothesis is that x-ray diffraction of hair can be used to distinguish hair from patients with confirmed breast cancer from subjects without detectable breast cancer.

The purpose of this study is to learn more about the application of transillumination measurements in the determination of breast cancer risk. The goal is to demonstrate a correlation between non-invasive optical transillumination spectroscopy and parenchymal density pattern.

This study is being performed so that tumor and blood samples from patients who will receive breast cancer treatment prior to surgery can be collected and stored for future research.

Background: Breast cancer is the most common malignancy in women, occurring in over 230,000 women annually in the United States. The vast majority of breast cancers originate in the single layer of epithelial cells that line the ductal/lobular system of the breast milk ducts. The premalignant changes which occur in the transformed epithelium are not well understood, however several cytologic or histologic changes have been identified which are associated with an increased risk for breast cancer, including ductal or lobular hyperplasia, hyperplasia with atypia, and lobular or ductal carcinoma in situ. The identification of cytological or histological abnormalities in breast epithelial cells is an important component of risk assessment. Objective: Primary objectives are: To determine the incidence and nature of cytologic changes in ductal epithelial cells from the high-risk breast, in specimens collected by breast ductal lavage, and to determine if these cytologic findings are different from those of female normal volunteers not at increased risk for breast cancer. To characterize by breast duct endoscopy, high risk breast ductal epithelium and architecture, and correlate these findings with the cytologic findings referenced in above bullet. To determine what is the global gene expression pattern of high risk breast epithelial cells from the high risk breast, and does this differ from that of breast epithelial cells from female normal volunteersnot at increased risk for breast cancer. The gene expression profile will be determined by cDNA microarray and validated by RT-PCR. Eligibility: Eligibility for high risk individuals will include: Women with a unilateral invasive or noninvasive (DCIS) breast cancer of epithelial origin. Women without breast cancer, but with a Gail Index greater than 1.67 percent, or a cumulative lifetime risk greater than or equal to double the age- and race-matched general population risk. Women known to be BRCA1/2 or other hereditary genes mutation carriers. Women with cytologic or histologic evidence of ductal hyperplasia, atypical ductal hyperplasia, or lobular carcinoma in situ. Women may be either premenopausal or postmenopausal. Postmenopausal is defined by the absence of menstrual periods for at least 12 months. Postmenopausal women who have previously undergone a hysterectomy without oophorectomy must have a serum FSH level of > 40 IU/ml, and a serum estradiol level of less than40 pg/ml to document postmenopausal status. Eligibility for normal volunteers will include: Women who are premenopausal or postmenopausal with a Gail model risk index less than 1.67 percent, and without a cumulative lifetime risk greater than or equal to double the age- and racematched general population risk. Women who have previously undergone a hysterectomy without oophorectomy must have a serum FSH level of >40 IU/ml, and a serum estradiol level of less than 40 pg/ml to document postmenopausal status. Both breasts must be free of any suspicious areas by physical examination and, for women over 30 years of age by mammogram. There must be no history of atypical hyperplasia, invasive or in situ carcinoma. Both groups must have acceptable white blood cell and platelet counts. Design: Breast ductal epithelial cells will be collected by breast ductal lavage from (a) the breast in women at increased risk for breast cancer, and (b) the breast of female normal volunteers who are not at increased risk for breast cancer. Ductal epithelial cell specimens will be analyzed cytologically for the presence of hyperplasia, atypia, or in situ changes. Breast duct endoscopy will be performed in breast cancer patients and in normal volunteers with cytologic atypia on ductal lavage to determine ductal architectural changes associated with increased risk for breast cancer, and to provide correlation with cytologic atypia. The gene expression profile of normal and high-risk ductal epithelial cells will be studied by cDNA-microarray to determine changes in gene expression associated with increased risk for breast cancer. Additional molecular profiling experiments which will be performed as lavage cells are available include DNA whole exome sequencing, Comparative Genomic Hybridization (CGH), proteomic tissue lysate arrays, and identification of mammary stem cells. A total of 104 high-risk subjects and 110 normal volunteers will be studied, divided approximately evenly between premenopausal and postmenopausal women....

The goal of this study is to determine how often patients who have atypical lobular hyperplasia (ALH) or lobular carcinoma in situ (LCIS) on core needle biopsy of an imaging (found by mammogram or breast ultrasound) abnormality will have associated breast cancer at surgical removal of the area.

This is an educational intervention study for breast cancer patients who undergo tamoxifen treatment. The purpose of the study is to assess the impact of decision aids (DA) on the patients' decision-making process, compliance on drug, and knowledge regarding tamoxifen treatment. Patients will randomly assign to DA group or conventional group. Both groups will have baseline questionnaire surveys before starting tamoxifen treatment, and 4 weeks later follow-up questionnaire surveys.

The aim of this study is to analyze cases of human epidermal growth factor receptor (HER) 2-positive metastatic breast cancer (MBC) of the last 10 years at the University Hospital of Zurich to assess the efficacy of the treatment with trastuzumab in HER2-positive MBC and to find out associations between different variables and the outcome. The aim is to find out probable prognostic factors and patterns of disease progression. Prognostic factors could optimize treatment approaches and result in a delay of disease progression.

This is a cohort study. This study is to develop a predictive model of the side effects after chemotherapy, exploreing the potential risk factors of the side effects such as myelosuppression and chemotherapy realted vomit after the chemotherapy, so that it could help to alleviate patients' fear and anxiety about the side effects and the toxicity of chemotherapy. The potential risk factors were measured at baseline.

Investigators aim to investigate whether circulating tumor DNA is a sensitive marker to evaluate patients' response to neoadjuvant chemotherapy

There is a paucity of studies that focus on the symptom burden of cancer patients in Singapore, particularly the clinical effects of cancer-related fatigue (CRF). Knowing that early-stage breast cancer is curable, it is of paramount importance to evaluate the clinical and biological determinants of lingering symptoms in breast cancer survivors so that appropriate psychosocial interventions can be formulated.