Background
Since the 1970s, the drug tamoxifen has been widely used in the treatment of breast cancer. Tamoxifen can counteract the cancer-promoting effects of oestrogen in the breast by binding itself to the oestrogen receptor in the cancerous cell, thus inhibiting tumour growth.
Research undertaken in Sweden and published in the September 2005 issue of Cancer Research, indicates that for a small percentage of tumours, this may not be the case.1
Statement from the National Breast and Ovarian Cancer Centre*
Australian women reassured of the benefits of tamoxifen
Australian women should be reassured that tamoxifen is a very effective tool in the treatment of breast cancer.
The recent findings from a Swedish study, suggesting adverse effects of tamoxifen in some women, are not statistically significant and provide no reason for any woman to change her current treatment based on this evidence.
In fact, the world’s largest review of early breast cancer trials published in the Lancet in May 2005 found the long-term benefits of current standard treatments, including tamoxifen, are significantly better than originally anticipated.
The review found treatment for early breast cancer with chemotherapy and tamoxifen can halve the risk of death from the disease after 15 years and the use of tamoxifen alone can reduce the risk of death from breast cancer by one third.
It is important to remember, however, that breast cancer is not one disease and therefore, tamoxifen will have a better response in some women than others.
Clinical trials are currently underway to determine the optimum hormonal treatment for pre-menopausal women with breast cancer based on specific characteristics of the disease. This will improve our ability to tailor treatment for individual women.
Any woman who is concerned about her current treatment should discuss this with her doctor or medical oncologist.
*The National Breast and Ovarian Cancer Centre is funded by the Australian Government and works with women, health professionals, cancer organisations, researchers and governments to improve health outcomes for women with breast and ovarian cancer. |
Making Informed Decisions
Women are faced with a number of health issues throughout their lives. Decisions may need to be made concerning treatment options for conditions such as breast cancer. Gathering information, thinking about options, knowing what it is you value and attuning yourself to all that you have learned about your body will help you make decisions that are appropriate for you.
Gathering information and talking with your health practitioner can assist you in making an informed decision.
References
1. Adverse Effect of Adjuvant Tamoxifen in Premenopausal Breast Cancer with Cyclin D1 Gene Amplification. Karin Jirström, Maria Stendahl, Lisa Rydén, Åsa Kronblad, Pär-Ola Bendahl, Olle Stål, Göran Landberg and The South Swedish and Southeast Swedish Breast Cancer Groups. Cancer Research 65, 8009-8016, September 1, 2005
Content updated September 06, 2005
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