Lee CYC, Olivier A, Honing J, et al. Endoscopic surveillance with systematic random biopsy for the early diagnosis of hereditary diffuse gastric cancer: a prospective 16-year longitudinal cohort study. Lancet Oncol 2023; 24: 107–16—In this Article, the x-axis labels in figure 2A corresponding to “Prophylactic total gastrectomy” and “Visible tumour (macroscopic)” have been corrected. In the fourth paragraph of the Results, the second and third sentences should have read: “In three (5%) of 58 asymptomatic individuals, macroscopic advanced tumours were directly visualised at the index endoscopy.