Genes coexpressed with DPP8 were involved in immune-related pathways and networks such as “IL-6 signaling in breast cancer cells”, ”G-protein signaling_Regulation of Cyclic AMP levels by ACM”, “Development_YAP/TAZ-mediated coregulation of transcription”, and “Immune response_IL-4-induced regulators of cell growth, survival, differentiation, and metabolism“, playing essential roles in breast cancer patients (Supplementary Figure S7, Table S5). Here, IL4 is linked to breast carcinoma.