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TOPLINE:
Men at higher genetic risk for prostate cancer had more than a threefold increased risk for early death from the disease, and about one third of these deaths may have been preventable through healthy lifestyle choices, a new analysis found.
METHODOLOGY:
About one third of men die from prostate cancer before age 75, highlighting the need for prevention strategies that target high-risk populations.In the current study, researchers analyzed data from two prospective cohort studies — the Malmö Diet and Cancer Study (MDCS) and the Health Professionals Follow-Up Study (HPFS) — which included 19,607 men with a median age at inclusion of 59 years (MDCS) and 65.1 years (HPFS) followed from 1991 to 2019.Participants were categorized by genetic risk and lifestyle score. Genetic risk was defined using a multiancestry polygenic risk score (PRS) for overall prostate cancer that included 400 genetic risk variants.A healthy lifestyle score was defined as 3-6, while an unhealthy lifestyle score was 0-2. Lifestyle factors included smoking, weight, physical activity, and diet.The researchers calculated hazard ratios (HRs) for the association between genetic and lifestyle factors and prostate cancer death.
TAKEAWAY:
Combining the PRS and family history of cancer, 67% of men overall (13,186 of 19,607) were considered to have higher genetic risk, and about 30% overall had an unhealthy lifestyle score of 0-2.Men at higher genetic risk accounted for 88% (94 of 107) of early prostate cancer deaths.Compared with men at lower genetic risk, those at higher genetic risk had more than a threefold higher rate of early prostate cancer death (HR, 3.26) and more than a twofold increased rate of late prostate cancer death (HR, 2.26) as well as a higher lifetime risk for prostate cancer death.Among men at higher genetic risk, an unhealthy lifestyle was associated with a higher risk of early prostate cancer death, with smoking and a BMI of ≥ 30 being significant factors. Depending on the definition of a healthy lifestyle, the researchers estimated that 22%-36% of early prostate cancer deaths among men at higher genetic risk might be preventable.
IN PRACTICE:
“Based on data from two prospective cohort studies, this analysis provides evidence for targeting men at increased genetic risk with prevention strategies aimed at reducing premature deaths from prostate cancer,” the researchers concluded.
SOURCE:
The study, with first author Anna Plym, PhD, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet in Stockholm, Sweden, was published online on July 3 in JAMA Network Open.
LIMITATIONS:
Differences in prostate cancer testing and treatment may account for some of the observed association between a healthy lifestyle and prostate cancer death. This analysis provides an estimate of what is achievable in terms of prevention had everyone adopted a healthy lifestyle. The authors only considered factors at study entry, which would not include changes that happen later.
DISCLOSURES:
The study authors reported several disclosures. For instance, Fredrik Wiklund, PhD, received grants from GE Healthcare, personal fees from Janssen, Varian Medical Systems, and WebMD, and stock options and personal fees from Cortechs Labs outside the submitted work. Adam S. Kibel, MD, received personal fees from Janssen, Pfizer, Bristol Myers Squibb, Cellvax, Merck, and Roche and served as a consultant for Bristol Myers Squibb and Candel outside the submitted work. Additional disclosures are noted in the original article.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
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Copyright for syndicated content belongs to the linked Source : Medscape – https://www.medscape.com/viewarticle/genetics-and-lifestyle-choices-can-affect-early-prostate-2024a1000cs2
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