TACSTD2 and gastric cancer: High expression of Trop2 in GC was associated with increased differentiation (χ2 = 9.192, p = 0.027), Tumor Node Metastasis (TNM) stage (χ2 = 38.939, p < 0.001), tumor size (χ2 = 35.576, p < 0.001), lymph node metastases (χ2 = 17.638, p < 0.001), distant metastases (χ2 = 9.728, p = 0.001), and H. pylori infection (χ2 = 7.549, p = 0.005).