We also found that several reporter regulatory molecules (e.g., E2F1, TP53, PTTG1, ZBTB16, hsa-miR-340-5p, hsa-miR-130a-3p, hsa-miR-200b-3p, hsa-miR-204-5p) regulated the transcription or post-transcription of hub genes associated with major biological processes and pathways in breast cancer, and they were also related to the OS of breast cancer patients. The gene discussed is PTTG1; the disease is breast carcinoma.