The antibody array utilized in this study simultaneously detected 40 cytokines and identified eleven cytokines (IFNGR1, Notch‐3, TNFRSF19L, GHR, SLAMF8, FR‐beta, Integrin alpha 5, Galectin‐8, EphA1, Epiregulin and FGF‐12) significantly elevated in gastric cancer serum when compared to the controls by Mann‐Whitney U test analysis. This evidence concerns the gene FOLR2 and gastric cancer.