Given that the strong correlation between immune infiltration and MT1L was shown above, while the expression level and clinical value of MT1L in BLCA were not yet characterized, we used GEPIA and R version 4.0.2 to analyze the MT1L expression level and its correlation between clinicopathological characteristics in BLCA based on the data downloaded from the TCGA database. The gene discussed is MT1L; the disease is bladder transitional cell carcinoma.