Lastly, we conducted the Kaplan–Meier analysis in another two BLCA cohorts and found that low TRIM38 levels correlated with worse OS outcomes in GSE13507 (N = 165, log-rank test P = 0.0012) and GSE32548 (N = 127, log-rank test P = 0.0018) (Additional file 3: Table S3). The gene discussed is TRIM38; the disease is bladder transitional cell carcinoma.