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Studies Report Progress Against Breast Cancer
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Submitted By: Information, News and Press Releases
Source: ASCO Communications June 6, 2010
Studies Report Progress Against Breast Cancer
CHICAGO – Studies describing new advances against breast cancer were released today at a press briefing at the 46th Annual Meeting of the American Society of Clinical Oncology (ASCO).
“The studies presented today provide us with new insight into the treatment and behavior of breast cancer, especially for difficult-to-treat metastatic disease,” said Eric P. Winer, MD, professor of medicine at Harvard Medical School, and moderator of the briefing. “We’re also learning the best ways to detect cancer spread in the lymph nodes, finding that in many cases, women can be spared from extensive, often painful, lymph node removal.”
Studies highlighted in the press briefing include:
• New Agent, Eribulin, Derived from a Marine Sponge, Increases Survival Among Women with Metastatic Breast Cancer: A Phase III randomized trial finds that a new chemotherapy agent, eribulin mesylate, extends median overall survival by 2.5 months among women with locally recurrent or metastatic breast cancer who had already been heavily treated with conventional therapies.
• Breast Cancers that Spread to the Liver May Change Biology, Impacting Treatment Effectiveness: A retrospective study of women with metastatic breast cancer showed that the biological characteristics of their primary tumors - including estrogen, progesterone, and HER2 status – often changes when the cancer spread to the liver, requiring a change in therapy for many women.
• Removing Axillary Lymph Nodes Based on Metastases in the Sentinel Node Does Not Improve Survival in Early Breast Cancer: Removing additional axillary (underarm) lymph nodes to look for breast cancer in women with limited disease spread in the sentinel node does not improve survival, according to results from a Phase III study. These findings are important because many physicians routinely remove multiple axillary nodes in women with micrometastases in the sentinel lymph node, which increases the risk of side effects, such as pain and swelling.
• Using Immunohistochemistry Testing to Identify Breast Cancer Micrometastases in the Sentinel Node and Bone Marrow Does Not Help Predict Survival: A large observational trial of women with early-stage breast cancer who had breast-sparing surgery (lumpectomy) showed that using immunohistochemistry (IHC) to detect micrometastases in sentinel lymph nodes and the bone marrow does not predict overall survival and should not be used to guide treatment decisions. Micrometastases are smaller, hidden pockets of metastatic disease that may be missed by standard pathology.
For consumer-oriented information on these studies and more than 120 cancer types, please refer to ASCO’s patient website, www.Cancer.Net
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