ZFAS1 and metastatic malignant neoplasm in the lymph nodes: From the pooled results (Table 3), we found that overexpression of ZFAS1 was significantly associated with positive lymph node metastasis (OR = 4.18, 95% CI: 2.70-6.48, p<0.001) and advanced clinical stage (OR = 3.36, 95%CI: 1.69-6.65, p<0.001).