ARL6IP5 and metastatic malignant neoplasm in the lymph nodes: It was found that the expression of PRAF3 was significantly correlated with pathological grade (P = 0.0498), tumor stage (P = 0.0208) and lymph node metastasis (P = 0.0343); while there was no significant correlation between PRAF3 expression and other factors (Table 1).