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Tamoxifen is also thought to lower the risk of breast cancer in those who have a predisposition or at risk. [9] Tamoxifen may be used in pre and postmenopausal women. [10] Toremifene is a similar SERM drug to tamoxifen, but is less common and only approved for treatment of metastatic cancer. Toremifene is generally prescribed once tamoxifen is ...
Toremifene appears to be safer than tamoxifen. [15] It has a lower risk of venous thromboembolism (VTE) (e.g., pulmonary embolism), stroke, and cataracts. [15] The lower risk of VTE may be related to the fact tamoxifen decreases levels of the antithrombin III to a significantly greater extent than either 60 or 200 mg/day toremifene. [15]
[4] [12] [14] [17] [27] Therapeutic alternatives with similar clinical performance are listed for some medicines and they may be considered for national essential medicines lists. [17] [18] The 9th Essential Medicines List for Children was updated in July 2023. [23] [28] Note: An α indicates a medicine is on the complementary list. [4] [14] [17]
Tamoxifen is also used to treat hormonally-responsive breast cancer, but it does so by interfering with the estrogen receptor. However, letrozole is effective only in post-menopausal women, in whom estrogen is produced predominantly in peripheral tissues (i.e. in adipose tissue, like that of the breast) and a number of sites in the brain. [9]
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.
The study, which looked at data from 2004 to 2021, found that advanced breast cancer rates have risen among women of all ages, with the sharpest increases in young women aged 20 to 39, and women ...
Tamoxifen is a pure antiestrogenic trans-isomer and has differential actions at estrogen target tissues throughout the body. Tamoxifen is selectively antiestrogenic in the breast but estrogen-like in bones and endometrial cancer. [24] Tamoxifen undergo phase I metabolism in the liver by microsomal cytochrome P450 (CYP) enzymes.
Drospirenone/estetrol, sold under the brand name Nextstellis, among others, is a fixed-dose combination medication containing drospirenone, a progestin, and estetrol, an estrogen, which is used as a combined birth control pill for the prevention of pregnancy in women.
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