Figure 4. Hsa-let-7d-5p and hsa-let-7e-5p are potential upstream binding miRNAs of P2RX1 in BC. (A) Differential expression analysis of hsa-let-7b-5p, hsa-let-7d-5p and hsa-let-7e-5p in BC based on TCGA and GTEx database. (B) The prognostic value of hsa-let-7d-5p and hsa-let-7e-5p in BC evaluated by Kaplan-Meier plotter.