To explore the correlation between the expression of TET1 and clinicopathological characteristics of patients with PTC, 36 patients were divided into 2 groups (n = 16 > mean; n = 33 ≤ mean) according to the mean expression level of TET1. As shown in Supplementary , the TET1 expression level positively correlated with tumor size (P=0.027). Here, TET1 is linked to neoplasm.