MEG3 and metastatic malignant neoplasm in the lymph nodes: Meanwhile, in the including 9 studies, 5 articles performed the relationship between the expression of MEG3 and gender [23, 25–27, 30], 3 articles demonstrated that MEG3 were correlated with lymph node metastasis (LNM) [23, 28, 30], and 3 were on distant metastasis DM [23, 26, 30].