In a study of tumor samples obtained from 90 patients, FOXK1 and c-jun expression were significantly correlated with tumor differentiation, AJCC (American Joint Committee on Cancer) stage, lymph node metastasis and serosal invasion; however, the expression levels were not correlated with gender, age or tumor size (Supplementary Table 2). The gene discussed is JUN; the disease is metastatic malignant neoplasm in the lymph nodes.