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Anastrozole, sold under the brand name Arimidex among others, is an antiestrogenic medication used in addition to other treatments for breast cancer. [6] [7] Specifically it is used for hormone receptor-positive breast cancer. [7] It has also been used to prevent breast cancer in those at high risk. [7] It is taken by mouth. [7]
Aromatase inhibitors (AIs) are a class of drugs used in the treatment of breast cancer in postmenopausal women and in men, [1] [2] and gynecomastia in men. They may also be used off-label to reduce estrogen conversion when supplementing testosterone exogenously. They may also be used for chemoprevention in women at high risk for breast cancer.
The elimination half-life of the drug is 12,5 hours and 34-54% of the drug is excreted unchanged in the urine. [23] Anastrozole is administered orally and has a standard daily dose of 1 mg. Anastrozole has good oral bioavailability and is rapidly absorbed. It takes 2–3 hours for the drug to reach maximum serum concentration.
Trials have shown that the drug reduces breast cancer cases by 49 per cent over 11 years among eligible women, meaning that if just 25 per cent of eligible women in England take up the offer ...
In 4,560 women, after 35 months, the administration of exemestane at a dose of 25 mg/day resulted in a 65% reduction in the risk of breast cancer compared with placebo; annual incidence rates were 0.19% and 0.55%, respectively (hazard ratio: 0.35; 95% CI [0.18-0.70]; p = 0.002).
Lynparza patients had a 79.6% IDFS rate at six years, compared to 70.3% for placebo patients, with the drug reducing the risk of invasive breast cancer recurrence, second cancers, or death by 35%.
Steroidal aromatase inhibitors are a class of drugs that are mostly used for treating breast cancer in postmenopausal women. High levels of estrogen in breast tissue increases the risk of developing breast cancer and the enzyme aromatase is considered to be a good therapeutic target when treating breast cancer due to it being involved in the final step of estrogen biosynthetic pathway and also ...
Surgical castration, or removal of the testes in males and ovaries in females, have been widely used in the past to treat hormone-responsive prostate cancer and breast cancer respectively. However, these invasive methods have been widely supplanted by the use of GnRH agonists, and other forms of pharmacologic castration.
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