To verify the correlation between DEGs and clinical outcome, by means of the LinkedOmics database, we analyzed the relationship of the above five DEGs with the survival of 552 patients after radiotherapy and found that only the low expression of GDF15 was statistically coordinated with the overall survival of breast cancer patients after radiotherapy (p = 0.03) (Figure 3A). This evidence concerns the gene GDF15 and breast carcinoma.