ZFAS1 and gastric cancer: Next, we tested the correlation between the ZFAS1 expression level and the clinicopathological characteristics of the 66 gastric cancer patients, we found that ZFAS1 was highly correlated with TNM stage (Fig. 1B), cancer invasion (Fig. 1C), lymph node metastasis (Fig. 1D) and cancer diameter (Fig. 1E), while there was no significant correlation between ZFAS1 expression level and gender, age, cancer differentiation, or CEA and CA199 levels (summarized in Table 1).