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Majority of older breast cancer patients use hormone treatment

Date:
June 16, 2014
Source:
Georgetown University Medical Center
Summary:
Women 65 years of age and older comprise about half of patients with breast cancer. Some studies suggest this group initiates therapy less often and discontinues treatment more frequently than younger or middle aged women. 'We found a more positive picture of use,' says the study author. Only 14 percent of the 65- to 91-year-olds in the study didn't start treatment. Non-white women are much more likely to not have therapy.

One of the most comprehensive looks at the use of hormone therapy in women over 65 with non-metastatic breast cancer found some welcome news. Except for frail patients, most participants in the large study complied with their oncologists' recommendations to treat their estrogen-positive breast cancer with hormone therapy -- either an aromatase inhibitor or tamoxifen. These drugs prevent tumors from using estrogen to fuel growth.

But the study, reported online June 16th in the Journal of Clinical Oncology, also found that non-white women were much more likely to not have therapy. "Women 65 years of age and older comprise about half of patients with breast cancer, but some studies have suggested this group initiates therapy less often and discontinues treatment more frequently than younger or middle aged women," says the study's lead author, Vanessa B. Sheppard, PhD, associate professor of oncology and assistant director of health disparities research at Georgetown Lombardi Comprehensive Cancer Center.

"We found a more positive picture of use -- although more than half of patients discontinued use before the five years of recommended treatment, non-initiation of starting treatment was only 14 percent," she says. "This is reassuring, as it's important for women to give themselves a chance for the best outcome possible, regardless of their age."

The seven-year study was conducted at 78 institutions and clinics in the U.S., enrolling 1,062 elderly women ages 65 to 91 with locally invasive cancer that had not spread. Women in the study judged to be frail or even "prefrail" may well be justified in not starting treatment for their breast cancer compare to women who are more robust or less frail, she says. "It may be that these women, with the concurrence of their physicians, felt they would not live long enough to benefit from the therapy given competing health conditions, and they also may have wanted to avoid any toxicities from treatment," Dr. Sheppard says.

Researchers also found that the discontinuation rate (stopping therapy before five years) was 51.5 percent and that the risk of discontinuation was higher with increasing age and lower for advanced stages of the disease. "This rate of discontinuation is about the same seen in some other studies," she says.


Story Source:

The above story is based on materials provided by Georgetown University Medical Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. V. B. Sheppard, L. A. Faul, G. Luta, J. D. Clapp, R. L. Yung, J. H.-y. Wang, G. Kimmick, C. Isaacs, M. Tallarico, W. T. Barry, B. N. Pitcher, C. Hudis, E. P. Winer, H. J. Cohen, H. B. Muss, A. Hurria, J. S. Mandelblatt. Frailty and Adherence to Adjuvant Hormonal Therapy in Older Women With Breast Cancer: CALGB Protocol 369901. Journal of Clinical Oncology, 2014; DOI: 10.1200/JCO.2013.51.7367

Cite This Page:

Georgetown University Medical Center. "Majority of older breast cancer patients use hormone treatment." ScienceDaily. ScienceDaily, 16 June 2014. <www.sciencedaily.com/releases/2014/06/140616204401.htm>.
Georgetown University Medical Center. (2014, June 16). Majority of older breast cancer patients use hormone treatment. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2014/06/140616204401.htm
Georgetown University Medical Center. "Majority of older breast cancer patients use hormone treatment." ScienceDaily. www.sciencedaily.com/releases/2014/06/140616204401.htm (accessed September 20, 2014).

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