LAMB1 and posterior cortical atrophy: When comparing the control, low‐risk PCa, high‐risk PCa, and mPCa groups, LAMB1 and Histone H4 were found to have the highest levels in mPCa plasma samples or high‐risk urine PCa samples, respectively (Figure 5D,E), indicating that ELISA results are consistent with PRM data (Figure 4).