14 Oct MidLife PSA Can Risk-Stratify Prostate Cancer in African American Men
MedicalResearch.com Interview with:
Mark Preston, MD, MPH
Associate Surgeon, Brigham and Women’s Hospital
Assistant Professor of Surgery, Harvard Medical School
Brigham and Women’s Hospital
Department of Surgery, Urology
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Black men are at significantly increased risk of developing and dying from prostate cancer. Unfortunately, there is limited research on screening strategies in this high-risk population. In this original investigation, we studied how baseline PSA levels measured in midlife predict later risk of aggressive prostate cancer in a population of black men. This study used stored blood samples and over a decade of follow-up in the Southern Community Cohort Study, an on-going cohort study with the highest representation of black men in the U.S.
We demonstrated that PSA levels in midlife very strongly predict future aggressive prostate cancer. Our data identify subgroups of black men who have widely divergent long-term risk of aggressive prostate cancer based on baseline PSA during midlife. We suggest that these groups could benefit from screening intervals tailored to their actual magnitude of disease risk.
These important findings build on our previous work on baseline PSA and subsequent risk of lethal prostate cancer in mainly white men, which was published in the Journal of Clinical Oncology in August 2016.
MedicalResearch.com: What should readers take away from your report?
Response: One strategy for improving PSA screening is to do an earlier measurement of PSA during midlife (aged 40-55). PSA levels during midlife have been shown by our group and others to strongly predict long-term risk of prostate cancer, particularly risk of aggressive disease, in now both black and white men.
This baseline PSA level during midlife can be used to risk-stratify PSA screening, targeting higher risk men for screening in order to diagnosis and treat them early while an opportunity exists for cure. In addition, men at low risk could safely be screened less frequently. As a result, much of the benefit of PSA screening on prostate cancer mortality could be maintained, while overdiagnosis and overtreatment would be reduced.
MedicalResearch.com: What recommendations do you have for future research as a result of this work?
Response: Prospective studies of a risk stratified screening program should be conducted. We are also studying ways to further improve risk prediction and to explore biologic mechanisms why a midlife PSA is so predictive.
Disclosures. I have no disclosures. Disclosures for other authors are listed in the manuscript.
Eur Urol. 2018 Sep 17. pii: S0302-2838(18)30627-4. doi: 10.1016/j.eururo.2018.08.032. [Epub ahead of print]
Preston MA1, Gerke T2, Carlsson SV3, Signorello L4, Sjoberg DD5, Markt SC6, Kibel AS7, Trinh QD7, Steinwandel M8, Blot W9, Vickers AJ5, Lilja H10, Mucci LA6, Wilson KM11.
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