SPP1 and metastatic malignant neoplasm in the lymph nodes: In addition, further verification using TCGA cohort data identified that the hub lncRNA (AC037441) was significantly negatively correlated with SPP1 (r = −0.27, p < 0.05) and M0 infiltration (R = –0.31, p < 0.05; Figure 7F), and the expression level of AC037441 in the early lymph node metastasis group was significantly lower than that in the non-metastatic group (p = 0.005, Figure 7G).