Track topics on Twitter Track topics that are important to you
The primary objective of this study is to identify the group of women with early stage breast cancer most likely to benefit from treatment with the selective progesterone receptor modulator (SPRM) mifepristone. This will be done by treating women briefly prior to planned surgery and examining the decrease in growth rate (measured by Ki-67 immunohistochemistry) in tumor samples taken before and after exposure to mifepristone.
Secondary objectives of this study include; (1) Measuring objective response in tumor size with treatment, (2) Establishing the safety and tolerability of short term mifepristone exposure in early stage breast cancer patients, and (3) Performing exploratory studies of expression of related targets following drug exposure.
Anti-estrogen therapy has been a mainstay of breast cancer treatment for over three decades. It is highly effective and has modest toxicity, certainly in comparison to chemotherapy. The selective estrogen receptor modulator tamoxifen has the longest history but a number of aromatase inhibitors and the anti-estrogen fulvestrant are also in widespread use along with ovarian ablation for pre-menopausal women. Given the success of this approach, and the highly analogous parallel progesterone signal, it is unfortunate that anti-progesterone therapy has not been similarly pursued. Additionally, data from the Woman's Health Initiative trial reveal a potentially significant role for progesterone in breast cancer development and growth. Healthy postmenopausal women treated with the combination of estrogen and progesterone over a 5 year period were 24% more likely to develop invasive breast cancer and had larger tumors at diagnosis. Notably this effect was not seen in post-hysterectomy women treated with estrogen alone over nearly 7 years. In fact a non-statistically significant reduction in breast cancer incidence was observed with estrogen alone.
The anti-progesterone mifepristone has been found to reduce proliferation in normal breast tissue. Even a low dose of mifepristone (50mg every other day for 3 months) demonstrated a statistically significant reduction in breast cell proliferation (measured by Ki-67 immunohistochemistry).
Higher doses of mifepristone, 200mg daily, have been used in patients with metastatic breast cancer for durations of almost 2 years without serious toxicity. Response rates were only 11% but no grade 4 or 5 toxicities occurred. Some grade 3 toxicities occurred, including lethargy, nausea, vomiting, and skin rash. These rashes resolved with temporary discontinuation of drug and did not recur when drug was resumed.
As a whole these data strongly support research into anti-progesterone therapy for early stage breast cancer. To our knowledge this is the first such study.
Allocation: Non-Randomized, Control: Historical Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Invasive Breast Cancer
Moores UCSD Cancer Center
University of California, San Diego
Published on BioPortfolio: 2014-08-27T03:13:08-0400
This is a Phase II study of pembrolizumab plus mifepristone in advanced breast cancer patients. The study will include a safety lead in of ten patients. Patients who are deemed eligible an...
This is a randomized, placebo-controlled, double-blind, phase II trial of nab-paclitaxel with or without mifepristone for advanced, glucocorticoid receptor-positive, triple-negative breast...
This is a study to assess the safety of the combination of mifepristone and eribulin in patients with metastatic or locally advanced unresectable breast or other specified solid tumors, an...
Primary Objectives: 1. To determine the antitumor activity of Mifepristone (RU-486) in patients with advanced or recurrent endometrioid adenocarcinoma or low grade endometrial stro...
This partially randomized phase I/II trial studies the side effects and best dose of enzalutamide and mifepristone when given together and to see how well they work in treating patients wi...
Gene expression profiling of breast cancer has demonstrated the importance of stromal response in determining the prognosis of invasive breast cancer. The host response to breast cancer is of increasi...
To identify the ultrasound and clinical features related to the different molecular subtypes of invasive breast cancer.
Radial scars (RS) commonly present mammographically as architectural distortions, but these lesions may be associated with non-invasive and invasive breast cancer. Digital breast tomosynthesis (DBT) h...
Invasive lobular carcinoma (ILC) of the breast has epidemiological, molecular and clinical specificities, and should likely be considered a unique entity. As for genetic susceptibility, CDH1 germline ...
Since 1998, the Ontario Breast Screening Program (OBSP) has offered organized assessment through Breast Assessment Centres (BAC). This study compares survival between screened women diagnosed with bre...
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)
Abnormal accumulation of lymph in the arm, shoulder and breast area associated with surgical or radiation breast cancer treatments (e.g., MASTECTOMY).
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.
A deoxycytidine derivative and fluorouracil PRODRUG that is used as an ANTINEOPLASTIC ANTIMETABOLITE in the treatment of COLON CANCER; BREAST CANCER and GASTRIC CANCER.
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.
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...
Track and monitor developments in breast cancer research and commercial development. Follow the tabs above to read the latest global news, research, clinical trials on breast cancer and follow companies active in the development of breast cancer tr...
Prostate cancer (cancer de prostata) Prostate cancer (cancer de prostata) is a form of cancer that develops in the prostate, a gland in the male reproductive system. Most prostate cancers are slow growing; however, there are cases of aggressive prostat...