However, we did not see an association between tumor PCA3 expression and biochemical recurrence on multivariable Cox proportional hazards modeling when adjusting for tumor grade, stage, and age at diagnosis (HR, 0.96; 95% CI, 0.87–1.04, [p-value = 0.36]), as presented in Appendix 1 and Appendix 1—table 2. This evidence concerns the gene PCA3 and neoplasm.