We showed that increased HOXD9 expression is correlated with differentiation (P < 0.001), lymph node metastasis (P < 0.001), tumor size (<10 cm3 vs ≥ 10 cm3, P = 0.001), AJCC stage (I/II vs. III/IV, P = 0.001) and TNM stage (I/II vs. III/IV, P < 0.001). Here, HOXD9 is linked to neoplasm.