EGFR and neoplasm: Additionally, EGFR gene amplification was more common in tumours of distal oesophagus (5/20 tumours, 25.0 %) and GOJ/cardia (13/63 tumours, 20.6 %) than in those of gastric corpus (2/65 tumours, 3.1 %) (χ2, p = 0.013).