Further, co-occurrence of MUC5AC/CD31 or VCAN-V1/CD31 was drastically decreased in MUC5AC KD–derived (Figure 8, D and E, and Supplemental Figure 7, A and B, quantification) or ST6GalNAc-I KO–derived (Supplemental Figure 6C) tumor xenograft tissues. Here, PECAM1 is linked to neoplasm.