 Palliative chemotherapy is still the standard of care for incurable advanced gastric cancer. Several retrospective, single institutional studies have shown that the addition of gastrectomy to chemotherapy might improve patient survival among patients with metastatic gastric cancer with a single non-curable factor. However, REGATTA trial, a phase 3, randomized controlled trial, concluded an opposite conclusion that gastrectomy followed by chemotherapy did not show any survival benefit compared with chemotherapy alone in advanced gastric cancer with a single non-curable factor. Interestingly, five patients initially assigned to chemotherapy alone in the study had got survival benefit form gastrectomy with curative intent because of complete disappear of all non-curable factors during chemotherapy. This finding raised the question as to conversional radical surgery following upfront chemotherapy could be a possible treatment option. We assessed the effectiveness of conversional radical surgery following docetaxel, oxalipaltin and S1 therapy for advanced gastric cancer with a single non-curable factor. 