Abstract
Objective
This retrospective cohort study aims to examine the receipt, timing to initiation, and duration of androgen deprivation therapy (ADT) in men with prostate cancer by race/ethnicity, socioeconomic status, and geographic location.
Methods
The study population are patients from Surveillance, Epidemiology, and End Results (SEER)-Medicare linked database, who were 66 years or older and newly diagnosed with stage III and IV prostate cancer in 1992–2009 and underwent radiation therapy, where ADT was proven to be highly beneficial and its use was considered as most appropriate (n = 12,170). We use logistic regression to examine the receipt of ADT and linear regression to study factors associated with time to ADT initiation while controlling for baseline characteristics.
Results
Overall, 77% of eligible patients received at least one form of ADT in combination with radiation therapy, of which 12% underwent orchiectomy and the rest received ADT, and 77.2% of non-Hispanic white and 80.7% of Hispanic patients received ADT compared to 73.8% of non-Hispanic black. After adjustment for demographic and tumor characteristics, black men and men of other races are less likely to receive ADT compared to white counterparts (OR = 0.64 and 0.74, respectively). The median time from cancer diagnosis to ADT initiation is 2 months. Once initiated, men received a median of seven drug injections. After controlling for covariates, race/ethnicity and geographic location (SEER areas) are associated with early initiation of therapy. White, Hispanic men and men living in the South initiate ADT earlier.
Conclusion
Significant racial disparities exist in the receipt and use of this highly beneficial therapy, and there are geographic variations in the utilization of this therapy.
Similar content being viewed by others
References
American Cancer Society. Cancer facts & figures 2018. Atlanta: American Cancer Society; 2018.
Howlader N, N.A., Krapcho M, Miller D, Bishop K, Altekruse SF, Kosary CL, Yu M, Ruhl J, Tatalovich Z, Mariotto A, Lewis DR, Chen HS, Feuer EJ, Cronin KA, SEER Cancer Statistics Review, 1975-2013. National Cancer Institute. Bethesda, MD, http://seer.cancer.gov/csr/1975_2013/, based on November 2015 SEER data submission, posted to the SEER web site, April 2016., 2015.
Golabek T, Belsey J, Drewa T, Kołodziej A, Skoneczna I, Milecki P, et al. Evidence-based recommendations on androgen deprivation therapy for localized and advanced prostate cancer. Cent European J Urol. 2016;69(2):131–8.
Shahinian VB, Kuo YF, Gilbert SM. Reimbursement policy and androgen-deprivation therapy for prostate cancer. N Engl J Med. 2010;363(19):1822–32.
Sasse AD, Sasse E, Carvalho AM, Macedo LT. Androgenic suppression combined with radiotherapy for the treatment of prostate adenocarcinoma: a systematic review. BMC Cancer. 2012;12:54.
Kauffmann G, Liauw SL. The use of hormonal therapy to augment radiation therapy in prostate Cancer: an update. Curr Urol Rep. 2017;18(7):50.
Holmes L Jr, et al. Effectiveness of androgen deprivation therapy in prolonging survival of older men treated for locoregional prostate cancer. Prostate Cancer Prostatic Dis. 2007;10(4):388–95.
Liu J, Shi L, Sartor O, Culbertson R. Androgen-deprivation therapy versus radical prostatectomy as monotherapy among clinically localized prostate cancer patients. Onco Targets Ther. 2013;6:725–32.
Studer UE, Whelan P, Albrecht W, Casselman J, de Reijke T, Hauri D, et al. Immediate or deferred androgen deprivation for patients with prostate cancer not suitable for local treatment with curative intent: European Organisation for Research and Treatment of Cancer (EORTC) trial 30891. J Clin Oncol. 2006;24(12):1868–76.
Prezioso D, Iacono F, Romeo G, Ruffo A, Russo N, Illiano E. Early versus delayed hormonal treatment in locally advanced or asymptomatic metastatic prostatic cancer patient dilemma. World J Urol. 2014;32(3):661–7.
Horwitz EM, Bae K, Hanks GE, Porter A, Grignon DJ, Brereton HD, et al. Ten-year follow-up of radiation therapy oncology group protocol 92-02: a phase III trial of the duration of elective androgen deprivation in locally advanced prostate cancer. J Clin Oncol. 2008;26(15):2497–504.
Bolla M, de Reijke TM, van Tienhoven G, van den Bergh A, Oddens J, Poortmans PM, et al. Duration of androgen suppression in the treatment of prostate cancer. N Engl J Med. 2009;360(24):2516–27.
Barocas DA, Penson DF. Racial variation in the pattern and quality of care for prostate cancer in the USA: mind the gap. BJU Int. 2010;106(3):322–8.
Moses KA, Orom H, Brasel A, Gaddy J, Underwood W III. Racial/ethnic disparity in treatment for prostate cancer: does cancer severity matter? Urology. 2017;99:76–83.
Hoffman RM, Harlan LC, Klabunde CN, Gilliland FD, Stephenson RA, Hunt WC, et al. Racial differences in initial treatment for clinically localized prostate cancer. Results from the prostate cancer outcomes study. J Gen Intern Med. 2003;18(10):845–53.
Presley CJ, Raldow AC, Cramer LD, Soulos PR, Long JB, Yu JB, et al. A new approach to understanding racial disparities in prostate cancer treatment. J Geriatr Oncol. 2013;4(1):1–8.
Lyratzopoulos G, Barbiere JM, Greenberg DC, Wright KA, Neal DE. Population based time trends and socioeconomic variation in use of radiotherapy and radical surgery for prostate cancer in a UK region: continuous survey. BMJ. 2010;340:c1928.
Carson AP, Howard DL, Carpenter WR, Taylor YJ, Peacock S, Schenck AP, et al. Trends and racial differences in the use of androgen deprivation therapy for metastatic prostate cancer. J Pain Symptom Manag. 2010;39(5):872–81.
Shahinian VB, Kuo YF, Freeman JL, Goodwin JS. Risk of fracture after androgen deprivation for prostate cancer. N Engl J Med. 2005;352(2):154–64.
Klabunde CN, Potosky AL, Legler JM, Warren JL. Development of a comorbidity index using physician claims data. J Clin Epidemiol. 2000;53(12):1258–67.
Holmes L Jr, Chan W, Jiang Z, Ward D, Essien EJ, du XL. Impact of androgen deprivation therapy on racial/ethnic disparities in the survival of older men treated for locoregional prostate cancer. Cancer Control. 2009;16(2):176–85.
Keating NL, O’Malley AJ, McNaughton-Collins M, Oh WK, Smith MR. Use of androgen deprivation therapy for metastatic prostate cancer in older men. BJU Int. 2008;101(9):1077–83.
Mettlin CJ, Murphy GP, Cunningham MP, Menck HR. The National Cancer Data Base report on race, age, and region variations in prostate cancer treatment. Cancer. 1997;80(7):1261–6.
Harlan LC, Potosky A, Gilliland FD, Hoffman R, Albertsen PC, Hamilton AS, et al. Factors associated with initial therapy for clinically localized prostate cancer: prostate cancer outcomes study. J Natl Cancer Inst. 2001;93(24):1864–71.
Kleinbaum DG, Klein M. Survival analysis: a self-learning text. Third ed; 2011.
National Comprehensive Cancer Network Clinical Practice Guidelines in Oncology (NCCN Guidelines) Prostate Cancer Version 1. 2016. at http://www.nccn.org/professionals/physician_gls/pdf/prostate.pdf, accessed on 2/2017.
Jones CU, Hunt D, McGowan DG, Amin MB, Chetner MP, Bruner DW, et al. Radiotherapy and short-term androgen deprivation for localized prostate cancer. N Engl J Med. 2011;365(2):107–18.
Bolla M, van Tienhoven G, Warde P, Dubois JB, Mirimanoff RO, Storme G, et al. External irradiation with or without long-term androgen suppression for prostate cancer with high metastatic risk: 10-year results of an EORTC randomised study. Lancet Oncol. 2010;11(11):1066–73.
Mottet N, van Damme J, Loulidi S, Russel C, Leitenberger A, Wolff JM, et al. Intermittent hormonal therapy in the treatment of metastatic prostate cancer: a randomized trial. BJU Int. 2012;110(9):1262–9.
Warde P, Mason M, Ding K, Kirkbride P, Brundage M, Cowan R, et al. Combined androgen deprivation therapy and radiation therapy for locally advanced prostate cancer: a randomised, phase 3 trial. Lancet. 2011;378(9809):2104–11.
Acknowledgements
We acknowledge the efforts of the National Cancer Institute; Center for Medicare and Medicaid Services; Information Management Services, Inc.; and the Surveillance, Epidemiology, and End Results Program tumor registries in the creation of this database. The interpretation and reporting of these data are the sole responsibilities of the authors.
Funding
This research is supported in part by the Cancer Prevention Research Institute of Texas (grant nos. RP130051 and RP170668).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of Interest
The authors declare that there are no conflicts of interest.
Rights and permissions
About this article
Cite this article
Nguyen, C., Lairson, D.R., Swartz, M.D. et al. Racial, Socioeconomic, and Geographic Disparities in the Receipt, Timing to Initiation, and Duration of Adjuvant Androgen Deprivation Therapy in Men with Prostate Cancer. J. Racial and Ethnic Health Disparities 6, 133–142 (2019). https://doi.org/10.1007/s40615-018-0508-8
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40615-018-0508-8