**Figure 1.** (**A**, **B**) Eliminating the batch effect between different sequencing platforms. (**A**) is the principal component analysis (PCA) plot before elimination of the batch effect, and (**B**) is the PCA plot after elimination. (**C**) Forest plot of 9 DEGs with P < 0.01 by univariate Cox regression. (**D**) The correlations between the m^{6}A-related genes and 8 m^{6}A-related-CoV genes. (**E**) Histogram based on maximally selected rank grouping. (**F**) The cut-off point with the maximum standard log-rank statistic was marked with a vertical dashed line. (**G**) The plots of GSEA results. (**H**) GO enrichment analysis of risk DEGs.