TACSTD2 and digestive system neoplasm: The significant association was also detected between TROP2 overexpression and poor outcome in patients with female genital system neoplasms (OS: pooled HR = 1.989, 95% CI = 1.312–3.015, P = 0.001; DFS: pooled HR = 1.904, 95% CI = 1.227–2.954, P = 0.004) and gastrointestine neoplasms(OS: pooled HR = 1.642, 95% CI = 1.104–2.444, P = 0.014).