PMID- 36372357 OWN - NLM STAT- MEDLINE DCOM- 20230213 LR - 20230424 IS - 2666-6367 (Electronic) IS - 2666-6367 (Linking) VI - 29 IP - 2 DP - 2023 Feb TI - Significance of Omitting Day 11 Mini-Dose Methotrexate for GVHD Prophylaxis After Unrelated Bone Marrow Transplantation. PG - 119.e1-119.e7 LID - S2666-6367(22)01771-7 [pii] LID - 10.1016/j.jtct.2022.11.006 [doi] AB - The combination of calcineurin inhibitors and short-term methotrexate has been used as a standard graft-versus-host-disease (GVHD) prophylaxis in allogeneic hematopoietic stem cell transplantation. Mini-dose methotrexate (mini-MTX), consisting of 5 mg/m(2)/d on days 1, 3, 6, and 11, is occasionally selected as an alternative considering toxicity. The significance of day 11 administration remains unclear. We performed a retrospective study of 135 cases of unrelated bone marrow transplantation at our institute between 2006 and 2019 and compared the outcomes between day 11 MTX dose omitted (n = 72) and full-doses of mini-MTX (n = 63). In total cohort, the 4-year overall survival (OS) was 58.7 %, and the omitted group showed poor GVHD/relapse-free-survival (P = .01) with comparable OS (P = .11) and relapse-free survival (P = .11). Human leukocyte antigen (HLA) mismatch is a major risk factor for severe GVHD. We analyzed the impact of omitting day 11 MTX in 2 cohorts from HLA matched or mismatched donors. In both cohorts, the omitted group had a higher risk of severe acute and chronic GVHD. In conclusion, the omission of day 11 MTX was associated with a higher risk of severe GVHD. Therefore the omission of the day 11 dose is not recommended. CI - Copyright (c) 2022 The American Society for Transplantation and Cellular Therapy. Published by Elsevier Inc. All rights reserved. FAU - Nakamura, Naokazu AU - Nakamura N AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. FAU - Wada, Fumiya AU - Wada F AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. FAU - Kondo, Tadakazu AU - Kondo T AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Hematology, Kobe City Medical Center General Hospital, Kobe, Japan. Electronic address: tadakazu@kuhp.kyoto-u.ac.jp. FAU - Aoki, Kazunari AU - Aoki K AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Stem Cell Genetics, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan. FAU - Arai, Yasuyuki AU - Arai Y AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Clinical Laboratory Medicine, Faculty of Medicine, Kyoto University, Kyoto, Japan. FAU - Mizumoto, Chisaki AU - Mizumoto C AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. FAU - Kanda, Junya AU - Kanda J AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. FAU - Kitawaki, Toshio AU - Kitawaki T AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. FAU - Yamashita, Kouhei AU - Yamashita K AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. FAU - Takaori-Kondo, Akifumi AU - Takaori-Kondo A AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221111 PL - United States TA - Transplant Cell Ther JT - Transplantation and cellular therapy JID - 101774629 RN - YL5FZ2Y5U1 (Methotrexate) SB - IM MH - Humans MH - *Methotrexate/therapeutic use MH - Bone Marrow Transplantation/adverse effects MH - Retrospective Studies MH - Transplantation, Homologous/adverse effects MH - *Graft vs Host Disease/etiology/prevention & control OTO - NOTNLM OT - GVHD OT - Methotrexate OT - Prophylaxis OT - Unrelated bone marrow transplantation EDAT- 2022/11/14 06:00 MHDA- 2023/02/14 06:00 CRDT- 2022/11/13 19:35 PHST- 2022/08/20 00:00 [received] PHST- 2022/10/12 00:00 [revised] PHST- 2022/11/03 00:00 [accepted] PHST- 2022/11/14 06:00 [pubmed] PHST- 2023/02/14 06:00 [medline] PHST- 2022/11/13 19:35 [entrez] AID - S2666-6367(22)01771-7 [pii] AID - 10.1016/j.jtct.2022.11.006 [doi] PST - ppublish SO - Transplant Cell Ther. 2023 Feb;29(2):119.e1-119.e7. doi: 10.1016/j.jtct.2022.11.006. Epub 2022 Nov 11.