To further investigate the association of sEV proteins LAMB1 and Histone H4 with human PCa tissue, the verification of the LAMB1 and Histone H4 protein expression on tissue samples were applied using commercial tissue microarray (TMA) available and paraffin‐embedded tissue slides from our tissue archive in another cohort (Figure 1D). The gene discussed is LAMB1; the disease is posterior cortical atrophy.