KLK3 and prostate carcinoma: Figure 2A shows that between 2018 and 2021, 5439 men were tested for prostate cancer, and of them, 1560 (29%) had Stockholm ≥ 11, 1036 (19%) had Stockholm3 ≥ 15, and 1922 (35%) had PSA ≥ 3 ng/ml.