Fig. 1

Analysis of differentially expressed genes and correlation between PD-L1 expression and prognosis in Caucasian and Asian LUAD patients. A, B Deviation plots of low and high expression differential genes in tumor and normal tissues in Caucasian (left) and Asian (right) LUAD patients. The abscissa represents logFC values, and the ordinate represents gene names. The dark blue represents tumor up-regulated genes, and the brown represents down-regulated genes in tumor tissues. C, D Scatter plots of PD-L1 expression in tumor and normal tissues in Caucasian (left) and Asian (right) LUAD patients. The abscissa represents the grouping of tumor and normal tissues, and the ordinate represents the relative PD-L1 expression. The blue represents normal tissues, and the red represents tumor tissues. E, F Paired scatter plots of PD-L1 expression in tumor and normal tissues in Caucasian (left) and Asian (right) LUAD patients. The abscissa represents the grouping of tumor and normal tissues, and the ordinate represents the PD-L1 relative expression. The blue represents normal tissues, and the red represents tumor tissues. G, H Survival curves of PD-L1 expression in tumor tissues in Caucasian (left) and Asian (right) LUAD patients. The abscissa represents survival time, and the ordinate represents survival rate. The red represents the PD-L1 high expression group, and the blue represents the PD-L1 low expression group