As shown in Figure 2, PSA from patients with BPH contained mainly biantennary complex-type glycans with or without the core-fucosylation and/or sialylation, whereas PSA from patients with prostate cancer contained increased amounts of similar biantennary complex-type glycans but with the one LacdiNAc group which is partly sialylated. Here, KLK3 is linked to Familial prostate cancer.