Similarly, no associations were observed between the expression of THY1 and gender and age, whereas significant correlations existed with differentiation degree (P<0.001), lymph node metastasis (P<0.001), clinical stage (P=0.003) and infiltration degree (P=0.001) of GC patients (Table 2). This evidence concerns the gene THY1 and metastatic malignant neoplasm in the lymph nodes.