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Genetic risk and likelihood of prostate cancer detection on first biopsy by ancestry.

Lee KM, Nelson TJ, Bryant A, Teerlink CC, Gulati R, Pagadala MS, Tcheandjieu C, Pridgen KM, DuVall SL, Yamoah K, Vassy JL, Seibert TM, Hauger RL, Rose BS, Lynch JA. Genetic risk and likelihood of prostate cancer detection on first biopsy by ancestry. Journal of the National Cancer Institute. 2024 May 8; 116(5):753-757.

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Abstract:

Despite differences in prostate cancer risk across ancestry groups, relative performance of prostate cancer genetic risks scores (GRS) for positive biopsy prediction in different ancestry groups is unknown. This cross-sectional retrospective analysis examines the association between a polygenic hazard score (PHS290) and risk of prostate cancer diagnosis upon first biopsy in male veterans using 2-sided tests. Our analysis included 36?717 veterans (10?297 of African ancestry). Unadjusted rates of positive first prostate biopsy increased with higher genetic risk (low risk: 34%, high risk: 58%; P? < .001). Among men of African ancestry, higher genetic risk was associated with increased prostate cancer detection on first biopsy (odds ratio = 2.18, 95% confidence interval = 1.93 to 2.47), but the effect was stronger among men of European descent (odds ratio = 3.89, 95% confidence interval = 3.62 to 4.18). These findings suggest that incorporating genetic risk into prediction models could better personalize biopsy decisions, although further study is needed to achieve equitable genetic risk stratification among ancestry groups.




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