Influence of African American race on the association between preoperative biopsy grade group and adverse histopathologic features of radical prostatectomy

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Abstract

Background: The current study was performed to evaluate the influence of race on the association between biopsy grade group (GrGp) and the risk of detectable prostate-specific antigen (PSA) and adverse histopathological outcomes after radical prostatectomy (RP). Methods: Data regarding 4073 men (1344 African American men; 33%) who were treated with RP were categorized based on the 5-tiered GrGp system. Logistic regression was used to test the association between biopsy GrGp and PSA nadir (<0.1 ng/mL) after RP as well as adverse pathological features among all patients and stratified by race. Results: Those patients with a higher biopsy GrGp were found to have lower odds of achieving a PSA nadir <0.1 ng/mL after RP on unadjusted and multivariable analysis (both P .06) except positive lymph nodes. When the models were stratified by race, the associations between preoperative biopsy GrGp and having a PSA nadir <0.1 ng/mL, high-grade final pathology, or other adverse histopathologic features were similar in both races except as noted for positive lymph nodes. Conclusions: Higher preoperative biopsy GrGp is associated with increased odds of adverse histopathological findings as well as lower odds of a PSA nadir <0.1 ng/mL after RP. These associations are largely independent of race, suggesting that GrGp is an accurate tool for risk stratification in both black and white men.

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Aminsharifi, A., Schulman, A., Howard, L. E., Tay, K. J., Amling, C. L., Aronson, W. J., … Polascik, T. J. (2019). Influence of African American race on the association between preoperative biopsy grade group and adverse histopathologic features of radical prostatectomy. Cancer, 125(17), 3025–3032. https://doi.org/10.1002/cncr.32168

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