According to the risk stratification of National Institutes of Health consensus criteria, the GIST was classified as intermediate risk (size: 5–0 cm; mitotic count: 5/50 HPF).[9] Immunohistochemical results: CD117(+), DOG1(+), Ki-67(+, 2%), SMA(−), desmin(−), S-100(−). The gene discussed is DES; the disease is gastrointestinal stromal tumor.