As shown in Fig. 6c, 67.5% (85 cases) of samples with low Trop2 expression exhibited low levels of MMP2 (less than the median), whereas 32.5% (41 cases) of samples with high Trop2 expression showed low levels of MMP2, suggesting that Trop2 expression significantly correlated (P < 0.05) the level of MMP2 in thyroid cancer. This evidence concerns the gene MMP2 and thyroid gland carcinoma.