In addition, we selected the serum of 80 ECs, 80 HCCs, and 80 LCs and measured the titer of four TAAbs (anti-MFGE8, anti-NRAS, anti-PTP4A1, anti-RRAS2) by ELISA to verify the specificity of four TAAbs in gastric cancer. This evidence concerns the gene MFGE8 and gastric cancer.