Figure 4. Key prognostic biomarkers associated with immune infiltration of EMT- and energy metabolism-related genes in BLCA. (A) Screening for genes associated with EMT and energy metabolism in BLCA that were positively correlated with PD1/PD-L1 expression by Venn mapping. (B) Interaction relationship of six genes was analyzed using the STRING database. (C) Correlation between the expression of EMT- and energy metabolism-related genes and PD1/PD-L1 expression. (D–I) Correlation between the expression of six genes and prognosis was analyzed via univariate and multivariate Cox analyses.