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Estrogen deprivation therapy, also known as endocrine therapy, is a form of hormone therapy that is used in the treatment of breast cancer.Modalities include antiestrogens or estrogen blockers such as selective estrogen receptor modulators (SERMs) like tamoxifen, selective estrogen receptor degraders like fulvestrant, and aromatase inhibitors like anastrozole and ovariectomy.
If a patient with ER+ breast cancer develops endocrine resistance, the endocrine therapy used to treat the cancer will no longer be effective. Approximately 30-50% of ER+ breast cancer patients will relapse as a result of endocrine resistance, proving it to be a predominant challenge in the treatment of ER+ breast cancer patients. [19]
It was previously used in the treatment of breast cancer, but has been replaced by more effective and less toxic agents. Estrace is an estrogen which was also formerly used for antiandrogen therapy of prostate cancer. [2] Polyestradiol phosphate is a long-acting derivative of estradiol that is applied as an intramuscular injection.
Staging breast cancer is the initial step to help physicians determine the most appropriate course of treatment. As of 2016, guidelines incorporated biologic factors, such as tumor grade, cellular proliferation rate, estrogen and progesterone receptor expression, human epidermal growth factor 2 (HER2) expression, and gene expression profiling into the staging system.
It is used as endocrine therapy for women with estrogen or progesterone receptor-positive, stage 4 or recurrent metastatic breast cancer [7] and has demonstrated similar efficacy compared to tamoxifen as adjuvant treatment of breast cancer and in the treatment of metastatic breast cancer. [6]
Elacestrant is indicated for the treatment of postmenopausal women or adult men with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, ESR1-mutated, advanced or metastatic breast cancer with disease progression following at least one other line of endocrine therapy. [2] [4]
Hormone-modulating therapy for breast cancer is associated with a 7% lower risk of developing Alzheimer's disease and related dementias later in life, a new study indicates.
Femara 2.5 mg oral tablet. Letrozole is indicated for adjuvant treatment of postmenopausal women with hormone receptor positive early breast cancer; [1] extended adjuvant treatment of postmenopausal women with early breast cancer who have received prior standard adjuvant tamoxifen therapy; [1] first and second-line treatment of postmenopausal women with hormone receptor positive or unknown ...