Trop2+/AREG+ protein coexpression were associated with Tumor Node Metastasis (TNM) stage (χ2 = 50.345, P < 0.001), tumor size (χ2 = 40.349, P < 0.001), lymph node metastases (χ2 = 26.481, P < 0.001), and distant metastases (χ2 = 8.387, P = 0.039). The gene discussed is AREG; the disease is neoplasm.