|
|||||
|
|
||||||
Originally published as JCO Early Release 10.1200/JCO.2007.12.3752 on December 1 2008 © 2009 American Society of Clinical Oncology. Cardiovascular Mortality After Androgen Deprivation Therapy for Locally Advanced Prostate Cancer: RTOG 85-31
From the Department of Radiation Oncology and Division of Hematology and Oncology, Massachusetts General Hospital, Boston, MA; Department of Statistics, Radiation Therapy Oncology Group; Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA; Department of Radiation Oncology, University of California, Los Angeles School of Medicine, Los Angeles, CA; and Department of Radiation Oncology, University of Michigan Medical School, Ann Arbor, MI Corresponding author: Matthew R. Smith, MD, PhD, Massachusetts General Hospital, Yawkey 7038, 55 Fruit St, Boston, MA 02114; e-mail: smith.matthew{at}mgh.harvard.edu Purpose Gonadotropin-releasing hormone (GnRH) agonists are associated with greater risk of coronary heart disease and myocardial infarction in men with prostate cancer, but little is known about potential impact on cardiovascular mortality. We assessed the relationship between GnRH agonists and cardiovascular mortality in a large randomized phase III trial of men treated with or without adjuvant goserelin after radiation therapy (RT) for locally advanced prostate cancer. Patients and Methods Between 1987 and 1992, 945 men with locally advanced prostate cancer were randomly assigned to RT and adjuvant goserelin or RT alone. Fine and Gray's regression was used to evaluate treatment effect on cardiovascular mortality. Covariates included age, prevalent cardiovascular disease (CVD), hypertension, diabetes mellitus (DM), body mass index, race, Gleason score, stage, acid phosphatase level, prostatectomy history, and nodal involvement. Results After a median follow-up of 8.1 years, there were 117 cardiovascular-related deaths but no treatment-related increase in cardiovascular mortality. At 9 years, cardiovascular mortality for men receiving adjuvant goserelin was 8.4% v 11.4% for men treated without adjuvant goserelin (Gray's P = .17). In multiple regression analyses, treatment arm was not significantly associated with increased risk of cardiovascular mortality (adjusted hazard ratio [HR] = 0.73; 95% CI, 0.47 to 1.15; P = .16; when censoring at time of salvage goserelin therapy, HR = 0.99; 95% CI, 0.58 to 1.69; P = .97). Traditional cardiac risk factors, including prevalent CVD and DM, were significantly associated with greater cardiovascular mortality. Conclusion GnRH agonists do not seem to increase cardiovascular mortality in men with locally advanced prostate cancer. Further studies are warranted to evaluate adverse effects of GnRH agonists in men with lower cancer-specific mortality. published online ahead of print at www.jco.org on December 1, 2008. Supported in part by an NIH K24 Midcareer Investigator Award (5K24CA121990-02; M.R.S.) and grants from the Prostate Cancer Foundation (M.R.S.). Authors disclosures of potential conflicts of interest and author contributions are found at the end of this article.
Related Article
This article has been cited by other articles:
|
||||||||||||||||||||||||||||||||||||
|
|||||||||||
|
Copyright © 2009 by the American Society of Clinical Oncology, Online ISSN: 1527-7755. Print ISSN: 0732-183X
|