How effective is anastrozole in preventing breast cancer?
Anastrozole was associated with a 36% reduction in new cancers (4.4% vs 3.5%; HR, 0.64; 95% CI, 0.45-0.91; P = . 014). Incidence was 5.3% in the anastrozole group compared with 8.8% in the placebo group (HR, 0.51; 95% CI, 0.39-0.66; P <. 0001).
How much does aromatase inhibitor reduce risk of recurrence?
“We found the rate of cancer recurrence averaged 21% lower for the women who received aromatase inhibitors,” Regan states.
How much does Arimidex increase survival?
Disease-free survival rates were: 71.1% for women treated with an additional 2 years of Arimidex. 70.3% for women treated with an additional 5 years of Arimidex.
Can I take anastrozole for 15 years?
The trial demonstrated that it is “safe and beneficial” for postmenopausal patients with hormone-receptor-positive breast cancer to take anastrozole as adjuvant therapy for an additional 5 years after initial treatment, the study authors wrote in conclusion.
Is it worth it to take anastrozole?
They are effective only in postmenopausal women. Based on a woman’s individual circumstances regarding her breast cancer, her overall health and other medical conditions, taking a medication such as anastrozole can decrease the chance of breast cancer recurring by about 7 to 10 percent.
Why do you have to take anastrozole for 5 years?
Some people start taking anastrozole after a number of years of taking another hormone therapy drug called tamoxifen. If you’re taking anastrozole to treat breast cancer that has come back or spread to another part of the body, you’ll usually take it for as long as it’s effective and any side effects can be managed.
Is anti estrogen therapy needed beyond 5 years?
Background. The administration of endocrine therapy for 5 years substantially reduces recurrence rates during and after treatment in women with early-stage, estrogen-receptor (ER)–positive breast cancer. Extending such therapy beyond 5 years offers further protection but has additional side effects.