David R Ziehr1, Ming-Hui Chen2, Danjie Zhang2, Michelle H Braccioforte3, Brian J Moran3, Brandon A Mahal1, Andrew S Hyatt4, Shehzad S Basaria5, Clair J Beard4, Joshua A Beckman6, Toni K Choueiri7, Anthony V D'Amico4, Karen E Hoffman8, Jim C Hu9, Neil E Martin4, Christopher J Sweeney7, Quoc-Dien Trinh10, Paul L Nguyen4. 1. Harvard Medical School, Boston, MA, USA. 2. Department of Statistics, University of Connecticut, Storrs, CT, USA. 3. Prostate Cancer Foundation of Chicago, Westmont, IL, USA. 4. Department of Radiation Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Houston, TX, USA. 5. Department of Endocrinology, Brigham and Women's Hospital, Houston, TX, USA. 6. Department of Cardiology, Brigham and Women's Hospital, Houston, TX, USA. 7. Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Houston, TX, USA. 8. Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. 9. Department of Urology, The University of California Los Angeles (UCLA) Medical Center, Los Angeles, CA, USA. 10. Division of Urology, Brigham and Women's Hospital, Houston, TX, USA.
Abstract
OBJECTIVES: To determine if androgen-deprivation therapy (ADT) is associated with excess cardiac-specific mortality (CSM) in men with prostate cancer and no cardiovascular comorbidity, coronary artery disease risk factors, or congestive heart failure (CHF) or past myocardial infarction (MI). PATIENTS AND METHODS: In all, 5077 men (median age 69.5 years) with cT1c-T3N0M0 prostate cancer were treated with brachytherapy with or without neoadjuvant ADT (median duration 4 months) between 1997 and 2006. Fine and Gray competing risks analysis evaluated the association of ADT with CSM, adjusting for age, year of brachytherapy, and ADT treatment propensity score among men in groups defined by cardiac comorbidity. RESULTS: After a median follow-up of 4.8 years, no association was detected between ADT and CSM in men with no cardiac risk factors (1.08% at 5 years for ADT vs 1.27% at 5 years for no ADT, adjusted hazard ratio (AHR) 0.83; 95% confidence interval (CI), 0.39-1.78; P = 0.64; n = 2653) or in men with diabetes mellitus, hypertension, or hypercholesterolaemia (2.09% vs 1.97%, AHR 1.33; 95% CI 0.70-2.53; P = 0.39; n = 2168). However, ADT was associated with significantly increased CSM in men with CHF or MI (AHR 3.28; 95% CI 1.01-10.64; P = 0.048; n = 256). In this subgroup, the 5-year cumulative incidence of CSM was 7.01% (95% CI 2.82-13.82%) for ADT vs 2.01% (95% CI 0.38-6.45%) for no ADT. CONCLUSION: ADT was associated with a 5% absolute excess risk of CSM at 5 years in men with CHF or prior MI, suggesting that administering ADT to 20 men in this potentially vulnerable subgroup could result in one cardiac death.
OBJECTIVES: To determine if androgen-deprivation therapy (ADT) is associated with excess cardiac-specific mortality (CSM) in men with prostate cancer and no cardiovascular comorbidity, coronary artery disease risk factors, or congestive heart failure (CHF) or past myocardial infarction (MI). PATIENTS AND METHODS: In all, 5077 men (median age 69.5 years) with cT1c-T3N0M0 prostate cancer were treated with brachytherapy with or without neoadjuvant ADT (median duration 4 months) between 1997 and 2006. Fine and Gray competing risks analysis evaluated the association of ADT with CSM, adjusting for age, year of brachytherapy, and ADT treatment propensity score among men in groups defined by cardiac comorbidity. RESULTS: After a median follow-up of 4.8 years, no association was detected between ADT and CSM in men with no cardiac risk factors (1.08% at 5 years for ADT vs 1.27% at 5 years for no ADT, adjusted hazard ratio (AHR) 0.83; 95% confidence interval (CI), 0.39-1.78; P = 0.64; n = 2653) or in men with diabetes mellitus, hypertension, or hypercholesterolaemia (2.09% vs 1.97%, AHR 1.33; 95% CI 0.70-2.53; P = 0.39; n = 2168). However, ADT was associated with significantly increased CSM in men with CHF or MI (AHR 3.28; 95% CI 1.01-10.64; P = 0.048; n = 256). In this subgroup, the 5-year cumulative incidence of CSM was 7.01% (95% CI 2.82-13.82%) for ADT vs 2.01% (95% CI 0.38-6.45%) for no ADT. CONCLUSION:ADT was associated with a 5% absolute excess risk of CSM at 5 years in men with CHF or prior MI, suggesting that administering ADT to 20 men in this potentially vulnerable subgroup could result in one cardiac death.
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