In addition, BC patients with positive lymph node metastasis (p = 0.005, Figure 1B), negative ER status (p = 0.012, Figure 1C), negative HER2 status (p < 0.001, Figure 1D), and advanced TNM stage (p < 0.001, Figure 1E) exhibited higher serum exosomal lncRNA DANCR levels compared with their respective controls. The gene discussed is ERBB2; the disease is breast cancer.