analyzed the interaction of MFAP2 with various immune cell infiltration, and found that the expression of MFAP2 was significantly positively correlated with the infiltration level of B cells, CD4+T cells, CD8+T cells, dendritic cells, macrophages and neutrophils in bladder urothelial carcinoma, breast invasive carcinoma and low-grade glioma. This evidence concerns the gene MFAP2 and bladder transitional cell carcinoma.