FIGURE 1.

Overall survival in the signal regulatory protein α (SIRPα) high‐expression group was worse than in the low‐expression group using a public dataset of esophageal squamous cell carcinoma (ESCC). A, The mRNA expression level of SIRPα in tumor tissue compared with normal tissue using The Cancer Genome Atlas ESCC dataset. FPKM, fragments per kilobase million. B, Overall survival of the high‐ (red line; n = 48) and low‐ (black line; n = 47) expression groups of SIRPα was analyzed by the Kaplan‐Meier method. Statistical analysis was undertaken using the log‐rank test