HOXD9 and metastatic malignant neoplasm in the lymph nodes: Logistic regression analysis was used to evaluate the correlation between HOXD9 expression and clinical pathological characteristics, the results showed that higher expression of HOXD9 were positively correlated with tumor size, distant metastasis, and TNM stage, but not significantly with lymph node metastasis, gender, and age (Table 2).