This is the first study to detect on the LOI of LIT1, IGF2 and H19 in gastric cancer in China-Mainland patients and LOI of IGF2 positive correlation with gastric corpus tumour (OR = 8, 95%CI = 1.425-44.920, p = 0.018) and lymph node metastasis (OR = 4.5, 95%CI = 1.084-18.689, p = 0.038). The gene discussed is IGF2; the disease is gastric cancer.