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Published in: Annals of Hematology 3/2020

01-03-2020 | Graft-Versus-Host Disease | Original Article

Reduced dose of MTX for GVHD prophylaxis promotes engraftment and decreases non-relapse mortality in umbilical cord blood transplantation

Authors: Souichi Shiratori, Hiroyuki Ohigashi, Shuichiro Takahashi, Takahide Ara, Hideki Goto, Masao Nakagawa, Junichi Sugita, Masahiro Onozawa, Kaoru Kahata, Tomoyuki Endo, Daigo Hashimoto, Takanori Teshima, North Japan Hematology Study Group (NJHSG)

Published in: Annals of Hematology | Issue 3/2020

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Abstract

Although a combination of calcineurin inhibitor and methotrexate (MTX) is used for graft-versus-host disease (GVHD) prophylaxis in umbilical cord blood transplantation (CBT), optimal dose of MTX for CBT remains to be determined.
We conducted a retrospective study to evaluate the safety and efficacy of standard-dose MTX (St-MTX, 15 mg/m2 on day 1 and 10 mg/m2 on days 3 and 6) and mini-dose MTX (Mini-MTX, 5 mg/m2 on days 1, 3 and 6) for GVHD prophylaxis in patients who underwent single unit CBT against hematological malignancies.
Thirty-two and 26 patients received St-MTX and Mini-MTX, respectively. Cumulative incidence of neutrophil engraftment was significantly higher in the Mini-MTX group than in the St-MTX group (88.5% vs 65.6%, P = 0.00448). Cumulative incidences of grade II to IV and grade III to IV of acute graft-versus-host disease (GVHD) were 34.4% and 6.2% in the St-MTX group, and 34.6% and 7.7% in the Mini-MTX group with no statistical significance. One-year non-relapse mortality (NRM) was significantly lower in the Mini-MTX group compared to the St-MTX group (31.2% vs 3.8%, P = 0.00938), whereas relapse rate was not different between the groups. Multivariate analysis also indicated that Mini-MTX significantly improved engraftment (HR, 0.5359; 95% CI, 0.3082 to 0.9318; P = 0.0270) and reduced NRM (HR, 0.117; 95% CI, 0.0151 to 0.9067; P = 0.040).
Our study suggests that GVHD prophylaxis using Mini-MTX in CBT is feasible and associated with improvement of engraftment and reduction in NRM.
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Metadata
Title
Reduced dose of MTX for GVHD prophylaxis promotes engraftment and decreases non-relapse mortality in umbilical cord blood transplantation
Authors
Souichi Shiratori
Hiroyuki Ohigashi
Shuichiro Takahashi
Takahide Ara
Hideki Goto
Masao Nakagawa
Junichi Sugita
Masahiro Onozawa
Kaoru Kahata
Tomoyuki Endo
Daigo Hashimoto
Takanori Teshima
North Japan Hematology Study Group (NJHSG)
Publication date
01-03-2020
Publisher
Springer Berlin Heidelberg
Published in
Annals of Hematology / Issue 3/2020
Print ISSN: 0939-5555
Electronic ISSN: 1432-0584
DOI
https://doi.org/10.1007/s00277-020-03937-3

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