SLC2A1 encodes the membrane protein Glucose Transporter 1 (GLUT1) and high expression of GLUT1 has been associated with poor survival in oesophageal squamous cell carcinoma and progression of Barrett's oesophagus to adenocarcinoma but GLUT1 has not been studied as a prognostic marker in OAC [18–23]. This evidence concerns the gene SLC2A1 and Barrett esophagus.