TOB1 and gastric cancer: Higher levels of nuclear p-TOB1 were observed in GC patients with poorly differentiated tumors (G3 and G4, P = 0.027), deep tumor invasion (T3 and T4, P = 0.013), or high TNM stage (III and IV, P = 0.043) compared to GC patients with moderately or well differentiated tumors (G1 and G2), superficial tumor invasion (T1 and T2), or low TNM stage (I and II).