The Kaplan–Meier plot indicated a positive relationship between PGC mRNA expression and overall survival in gastric cancer patients with T2, T3, N1 + 2 + 3, N1, N2, N3, M0, or IV stage, diffuse subtype, or Her-2-positive disease (p < 0.05, data not shown). This evidence concerns the gene ERBB2 and gastric cancer.