The main significant factors identified are the type of resection (total gastrectomy, HR = 2.93, 95% CI—1.45–7.12, p = 0.001), type of anastomosis (esojejunal anastomosis, HR = 2.97, 95% CI—1.97–7.11), albumin below 3.5 g/dL (HR = 3.67, 95% CI—1.97–5.34, p = 0.001), transfusion requirement over 2 units (HR = 1.97, 95% CI—1.11–6.27, p = 0.003), and diabetes mellitus (HR = 2.44, 95% CI—1.09–4.11, p = 0.001). The gene discussed is ALB; the disease is diabetes mellitus.