KLK3 and posterior cortical atrophy: In an initial validation multi‐centre trial, ExoDx alone had a superior detection rate for high‐grade PCa than PSA, with an AUC of 0.74 (95% CI, 0.68–0.8) compared to an AUC of 0.55 (95% CI, 0.49–0.60) for PSA alone.74