Deeren, D. (2026) “Do high-volume centers really save more lives? A call for scientific rigor and transparency. Comment on: ‘Does size matter? Center-specific characteristics and survival after allogeneic hematopoietic cell transplantation for acute myeloid leukemia: an analysis of the German Registry for Stem Cell Transplantation and Cell Therapy’”, Haematologica. Pavia, Italy, 111(2), pp. 771-772. doi: 10.3324/haematol.2025.288731.