Other highlights in the March 7 JNCI

Changes in Breast Density May Impact Breast Cancer Risk

Changes in breast density within a three year period may impact breast cancer risk, according to a new study. The two measurements of breast density needed to calculate that change may better predict a woman's risk of breast cancer than a single measurement.

High breast density is a strong predictor of breast cancer risk, but researchers did not know whether changes in breast density over time would affect this risk. Karla Kerlikowske, M.D., of the University of California, San Francisco, and colleagues looked at breast density data from 301,955 women aged 30 and older who had received at least two mammograms between January 1993 and December 2003. Of those women, 2,639 were diagnosed with breast cancer within 12 months of their last screening.

An increase in breast density was associated with a greater risk of breast cancer, regardless of the woman's original breast density measurement. Women with lower breast density after their second mammogram had a reduced risk of breast cancer, except for those who were initially in the highest density group.

"It is not known why some women may have an increase in breast density over time with increasing age," the authors write. "Decreasing weight, increased alcohol intake, or changes in diet or medication may contribute to increasing breast density, and their possible effects on changes in breast density over time warrant further study."

Contact: Steve Tokar, Communications Manager, Northern California Institute for Research and Education, steve.tokar@ncire.org, (415) 221-4810 x5202

Targeting Prostate-Specific Proteins May Lead to New Treatments for Prostate Diseases

By targeting a protein unique to the prostate gland, researchers may have found a compound that is a safe and effective treatment for prostate cancer and other pro

Contact: Liz Savage
Journal of the National Cancer Institute

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Related biology news :

1. Other highlights in the Aug. 7 JNCI
2. Other highlights in the July 24 JNCI
3. Other highlights from the July 10 JNCI
4. Other highlights in JNCI, June 26
5. Other highlights in JNCI, June 12
6. Other highlights from the June 6 JNCI
7. Other highlights in the May 16 JNCI
8. Other highlights from the April 18 Journal of the National Cancer Institute
9. Other highlights from the March 21 JNCI
10. Other highlights in the Feb. 21 JNCI
11. Other highlights in the Jan. 17 JNCI

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