YAP1 and metastatic malignant neoplasm in the lymph nodes: The results indicated that high PP1γ expression was significantly associated with lymph node metastasis (P = 0.004), while high YAP1 expression was significantly related to male gender (P = 0.042), lymph node metastasis (P < 0.01), and advanced AJCC stage (P = 0.012) (Table 1).