Cancer News
OncoLink Cancer News - HealthDay

Three Medications Beneficial in Breast Cancer Prevention

-- Rick Ansorge

Tuesday, September 15, 2009

TUESDAY, Sept. 15 (HealthDay News) -- Three medications -- the selective estrogen receptor modulators tamoxifen and raloxifene, and tibolone, a drug not approved in the United States but used in many other countries to treat menopausal symptoms -- may reduce the risk for primary breast cancer. However, the three drugs are variously associated with an increased risk of thromboembolic events, endometrial cancer, or stroke, according to a study published online Sept. 15 in the Annals of Internal Medicine.

Heidi D. Nelson, M.D., of the Oregon Health and Science University in Portland, and colleagues conducted a systematic review of seven randomized controlled trials and one head-to-head trial.

Compared to placebo, the researchers found that tamoxifen, raloxifene, and tibolone significantly reduced the risk of invasive breast cancer (risk ratios, 0.70, 0.44, and 0.32, respectively). However, they found that tamoxifen and raloxifene are associated with an increased risk of thromboembolic events (risk ratios, 1.93 and 1.60, respectively), tamoxifen is a causal factor for endometrial cancer (risk ratio, 2.13), and that tibolone is a causal factor for strokes in older women.

"Before applying these findings to practice, clinicians must assure that women understand their individual risks for breast cancer and favorably balance these with the unwanted effects of risk reducing medications," the authors conclude.

Full Text

Specialties Cardiology
Diabetes & Endocrinology
Internal Medicine
Family Practice

Copyright © 2009 ScoutNews, LLC. All rights reserved.

I Wish You Knew

Importance of funding cancer research

View More

Blogs and Web Chats

OncoLink Blogs give our readers a chance to react to and comment on key cancer news topics and provides a forum for OncoLink Experts and readers to share opinions and learn from each other.

OncoLink OncoPilot

Facing a new cancer diagnosis or changing the course of your current treatment? Let our cancer nurses help you through!

Learn More