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Higher risk for heart disease and diabetes associated with androgen deprivation therapy

Date:
December 12, 2009
Source:
Journal of the National Cancer Institute
Summary:
Men of all ages treated for prostate cancer with androgen deprivation therapy, specifically with gonadotropin-releasing hormone agonists, have an increased risk of diabetes and cardiovascular disease, according to a new study.

Men of all ages treated for prostate cancer with androgen deprivation therapy, specifically with gonadotropin-releasing hormone agonists (GnRH), have an increased risk of diabetes and cardiovascular disease, according to a new study published online December 7 in the Journal of the National Cancer Institute.

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Previous studies indicate that older men who take androgen deprivation therapy for prostate cancer are at an increased risk for diabetes and cardiovascular disease, but the relationship between the two among men of all ages is unclear.

Nancy L. Keating, M.D., MPH, of the Division of General Internal Medicine, Department of Medicine, Brigham and Women's Hospital in Boston, and colleagues conducted an observational study of almost 38,000 men of all ages who were diagnosed with local or regional prostate cancer in the Veterans Healthcare Administration from January 2001 through December 2004, with follow-up through December 2005.

Cox proportional hazards models were used to assess whether androgen deprivation therapy with GnRH agonists, oral antiandrogens (drugs that block the action of hormones), the combination of the two, or orchiectomy (removal of the testicles) were associated with diabetes, coronary heart disease, myocardial infarction, sudden cardiac death, or stroke, after adjustment for patient and tumor characteristics.

Treatment with GnRH agonists was associated with statistically significant increased risks of incident diabetes (for GnRH agonist therapy, 159.4 events per 1,000 person-years versus 87.5 events for no androgen deprivation therapy).

"Additional research is needed to understand the effects of GnRH agonists for clinical settings where benefits have not yet been established, to identify populations of men at highest risk of complications associated with GnRH agonists, and to investigate strategies to prevent treatment-related morbidity," the authors write. "Nevertheless, patients and physicians considering initiation of GnRH agonist treatment for local or regional prostate cancer should factor the potential increased risks of diabetes and cardiovascular disease as they make treatment decisions."

In an accompanying editorial, Peter Albertsen, M.D., University of Connecticut Health Center in Farmington, said this study adds to the growing body of literature on androgen deprivation therapy. The researchers gave a glimpse into the extent of therapy side effects for contemporary patients, including men younger than 55 and older than 75 years, according to Albertsen.

"With the growing number of men wrestling with rising PSA [prostate-specific antigen] values after treatment, we should organize appropriate trials and reflect carefully about the anticipated benefits and harm before initiating ADT treatment," the editorialist writes.


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The above story is based on materials provided by Journal of the National Cancer Institute. Note: Materials may be edited for content and length.


Cite This Page:

Journal of the National Cancer Institute. "Higher risk for heart disease and diabetes associated with androgen deprivation therapy." ScienceDaily. ScienceDaily, 12 December 2009. <www.sciencedaily.com/releases/2009/12/091207164842.htm>.
Journal of the National Cancer Institute. (2009, December 12). Higher risk for heart disease and diabetes associated with androgen deprivation therapy. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2009/12/091207164842.htm
Journal of the National Cancer Institute. "Higher risk for heart disease and diabetes associated with androgen deprivation therapy." ScienceDaily. www.sciencedaily.com/releases/2009/12/091207164842.htm (accessed December 20, 2014).

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