Accepted Article Preview: Published ahead of advance online publication HLA-DPB1 mismatch induces a graft-versus-leukemia (GVL) effect without severe acute GVHD after single-unit umbilical cord blood transplantation T Yabe, F Azuma, K Kashiwase, K Matsumoto, T Orihara, H Yabe, S Kato, K Kato, S Kai, T Mori, S Morishima, M Satake, M Takanashi, K Nakajima, Y Morishima, on behalf of Japanese Cord Blood Transplantation Histocompatibility Research Group Cite this article as: T Yabe, F Azuma, K Kashiwase, K Matsumoto, T Orihara, H Yabe, S Kato, K Kato, S Kai, T Mori, S Morishima, M Satake, M Takanashi, K Nakajima, Y Morishima, on behalf of Japanese Cord Blood Transplantation Histocompatibility Research Group, HLA-DPB1 mismatch induces a graft- versus-leukemia (GVL) effect without severe acute GVHD after single-unit umbilical cord blood transplantation, Leukemia accepted article preview 27 June 2017; doi: 10.1038/leu.2017.202. This is a PDF file of an unedited peer-reviewed manuscript that has been accepted for publication. NPG are providing this early version of the manuscript as a service to our customers. The manuscript will undergo copyediting, typesetting and a proof review before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers apply. Received 15 February 2017; revised 26 May 2017; accepted 1 June 2017; Accepted article preview online 27 June 2017 © 2017 Macmillan Publishers Limited. All rights reserved.