MiR-9, miR-15b, miR-17, miR-19a and miR-30d are identified to be the most interconnected differentially expressed (DE) ci-miRs that are highly abundant in tumor interstitial fluids (TIFs) of the basal subtype than in patients with luminal and Her2-enriched cancer and are also suggestive of high-grade metastatic tumors with poor prognosis [88]. The gene discussed is ERBB2; the disease is neoplasm.