Track topics on Twitter Track topics that are important to you
Breast cancer cells have certain characteristics or traits--these traits are called biomarkers. There are three biomarkers that help doctors decide which treatment to give any given patient. These biomarkers are the estrogen receptor (ER), progesterone receptor (PgR), and HER2 protein. Breast cancer cells that have a large number of estrogen or progesterone receptors are called ER and/or PgR positive. Cancers that are ER and/or PgR positive use the hormones estrogen and progesterone to help them grow. Not all breast cancers are ER or PgR positive. Patients are being asked to take part in this study that have a special type of breast cancer called HER2 positive breast cancer. HER2-positive breast cancer is a breast cancer that tests positive for a protein called human epidermal growth factor receptor-2 (HER2). HER2 is located on the outer surface of a cancer cell. The HER2 protein sends a signal to the inside of the cancer cells telling it to grow and divide.
There are two medications that directly target this HER2 protein. One medication is called trastuzumab(Herceptin), and the other medication is called lapatinib (Tykerb). Both medications are FDA-approved for the treatment of women with HER2+ breast cancer. Each medication attaches to the protein so that it can no longer function. Once the protein stops working, the cancer cells can no longer make copies of themselves. This makes cancer shrink. Both drugs target HER2; however each drug works a little bit differently.
We have found that some patients respond better to Herceptin, and some patients respond better to Tykerb. Right now, we are not sure why some patients respond to one drug but do not respond to the other drug. One possibility is that in some patients, the HER2 protein finds another way to send its message to the inside of the cell (similar to a road detour). For example, when one path is "closed" because the drug is blocking it, the HER2 protein finds a different way to send its signal. We think that we can completely block the HER2 protein by giving patients both Tykerb and Herceptin.
Some patients with HER positive breast cancer are also ER and/or PgR positive. Even after HER2 is completely blocked, these types of cancer cells can still grow by using the estrogen or progesterone receptor. If a patient is told they are ER and/or PgR positive, they will also take an anti-estrogen pill along with Tykerb and Herceptin. We think that we can stop cancer growth more completely by blocking both the HER2 protein and the ER/PR receptors.
Allocation: Non-Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
Advanced Breast Cancer
Herceptin / Lapatinib, Letrozole
Baylor College of Medicine Lester and Sue Smith Breast Center
Not yet recruiting
Baylor Breast Care Center
Published on BioPortfolio: 2014-08-27T03:18:28-0400
In this research study we are studying the effects of the combination of lapatinib plus Herceptin in subjects with breast cancer that has spread outside of the breast. We are also studying...
The purpose of this study is to determine if BMS-690514 + letrozole will be more effective than lapatinib + letrozole in patients who have metastatic hormone receptor positive breast cance...
This study will compare the efficacy and tolerability of GW572016 administered in combination with letrozole, versus letrozole and placebo, as treatment for hormone receptor-positive advan...
Evaluate the percentage of clinical objective responses (cOR) in patients with HER2 negative early breast cancer treated with pre operative (neoadjuvant)lapatinib and letrozole
This is a randomized controlled trial of HER-2 positive breast cancer patients treated with lapatinib and paclitaxel vs herceptin and paclitaxel with sequential and synchronous anthracycli...
Neoadjuvant endocrine treatment (NET) is a low-toxicity approach to achieve operability in locally advanced breast cancer, and to facilitate breast conservation in early breast cancer, particular in p...
Health-related quality of life of postmenopausal women with hormone receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer treated with ribociclib + letrozole: results from MONALEESA-2.
Evaluate patient-reported outcomes (PROs) for postmenopausal women with hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) advanced breast cancer treated with f...
The addition of palbociclib to letrozole improves progression-free survival in the first-line treatment of hormone receptor positive advanced breast cancer (ABC). This study assesses the cost-utility ...
Attenuation of estrogen receptor α (ERα) expression via unknown mechanism(s) is a hallmark of endocrine-resistant breast cancer (BCa) progression. Here, we report that miR-1271 was significantly dow...
Locally advanced breast cancer (LABC) is defined as the most advanced stage of non-metastatic breast cancer. While breast reconstruction is not contraindicated in this subset of patients, the decision...
Abnormal accumulation of lymph in the arm, shoulder and breast area associated with surgical or radiation breast cancer treatments (e.g., MASTECTOMY).
An antineoplastic agent that is a derivative of progesterone and used to treat advanced 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.
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)
An aromatase inhibitor that produces a state of "medical" adrenalectomy by blocking the production of adrenal steroids. It also blocks the conversion of androgens to estrogens. Aminoglutethimide has been used in the treatment of advanced breast and prostate cancer. It was formerly used for its weak anticonvulsant properties. (From Martindale, The Extra Pharmacopoeia, 30th ed, p454)
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...