In BLCA, a gene correlation study was performed to see if there was a link between the target gene and the prognostic m6A-related lncRNAs (Fig. 6), and we found that the expression of PD-L1 had a significantly negative association with m6A-lncRNA LINC02604, AC104532.2, AL022328.2 and EHMT2–AS1. This evidence concerns the gene EHMT2 and bladder transitional cell carcinoma.