The results illustrated that the expression of hsa_circ_0070354 was positively correlated with differentiation degree (p = 0.002), tumor size (p < 0.001), lymph node metastasis (p = 0.001), distant metastasis (p = 0.028), TNM stage (p < 0.001), Ki-67 expression (p = 0.005), the value of CEA (p = 0.038) and Cyfra21-1 (p = 0.007) by Chi-square test, but not with other clinicopathological parameters such as age, sex, smoking status, pathological type and so forth (Table 2). Here, MKI67 is linked to neoplasm.