Among PTTs, HLA-G expression was significantly associated with female sex (92.0% vs. 80.5%, p=0.014) and AJCC stages (p=0.043), whereas HLA-G expression was much higher in patients with GC of advanced AJCC stages (77.6% in AJCCI+II vs. 87.4% in AJCCIII+IV, p=0.031). The gene discussed is HLA-G; the disease is gastric cancer.