A genomic classifier shows improved prediction of oncologic outcomes in African-American men treated with radical prostatectomy.
2019
8Background: Accurate risk stratification after radical prostatectomy (RP) is important to help select men at risk of recurrence who will benefit most from postoperative radiation or multi-modal therapy. Increasingly genomic testing is being used in the clinic for this purpose. However, little is known about how these tests predict outcomes in African-American men (AAM), an underserved at risk population. Here we evaluate Decipher within a large Veteran Affairs cohort and compare its performance to the CAPRA-S clinical model for predicting outcomes in patients. Methods: Decipher genomic classifier (GC) scores were generated for 557 patients, who underwent RP at the VA Medical Center Durham between 1989 and 2016. This was a clinically high-risk cohort which all underwent RP. Cox UVA and MVA proportional hazards models and survival c-index were used to compare the performance of Decipher and CAPRA-S for predicting risk of metastasis and PCa specific mortality (PCSM). Results: Overall, 55% (n = 306) of patie...
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