Abstract
The efficacy of high-dose methotrexate (HD-MTX) for central nervous system (CNS) relapse prophylaxis in patients with high-risk diffuse large B-cell lymphoma (DLBCL) is controversial. We compared the prophylactic effects of HD-MTX and intrathecal methotrexate (IT-MTX) on CNS relapse in high-risk DLBCL, in a multicenter retrospective study. A total of 132 patients with DLBCL at high risk of CNS relapse who received frontline chemotherapy and IT-MTX from 2003 to 2013 (n = 34) or HD-MTX from 2014 to 2020 (n = 98) were included. After a median follow-up of 52 months (range: 9–174), 11 patients had isolated CNS relapse: six (6.1%) in the HD-MTX group and five (14.7%) in the IT-MTX group. The median time until CNS relapse was 38 months (range: 11–122), and the cumulative incidence of CNS relapse at 3 years was 3.9% in the HD-MTX group and 6.1% in the IT-MTX group (P = 0.93). Similar results were obtained after adjusting for background factors using propensity score-matched analysis (4.5% HD-MTX vs. 7.6% IT-MTX, P = 0.84). The CNS relapse rate in HD-MTX-treated patients was equivalent to that in IT-MTX patients, demonstrating that HD-MTX was not superior to IT-MTX in preventing CNS relapse.
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For original data, please contact the corresponding author (takuya_m@yokohama-cu.ac.jp).
Abbreviations
- ABC:
-
Activated B-cell-like
- Ccr:
-
Creatinine clearance
- CNS:
-
Central nervous system relapse
- DA-EPOCH-R:
-
Dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, doxorubicin, and rituximab combination therapy
- DHL:
-
Double-hit lymphoma
- DLBCL:
-
Diffuse large B-cell lymphoma
- GCB:
-
Germinal center B-cell-like
- HD-MTX:
-
High-dose methotrexate
- IT-MTX:
-
Intrathecal methotrexate
- IPI:
-
International Prognostic Index
- OS:
-
Overall survival
- PFS:
-
Progression-free survival
- PS:
-
Performance status
- R-CHOP:
-
Rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone combination therapy
- SMD:
-
Standardized mean difference
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Acknowledgements
We would like to thank all the members of the Yokohama Cooperative Study Group for Hematology for cooperating with this study.
Funding
This study received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
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MA: Data curation, statistical analysis and writing – original draft. TM: Statistical analysis and writing – original draft. HT: Data curation. TO: Data curation. HT: Data curation. HT: Data curation. KM: Data curation. CH: Data curation. KF: Data curation. HF: Data curation. YS: Statistical analysis. All authors reviewed, read, and approved the final version of the manuscript.
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Katsumichi Fujimaki has received honoraria from Pfizer. Shin Fujisawa has received research funding and honoraria from Pfizer. Hideaki Nakajima has received a scholarship donation from Pfizer. All the other authors have no conflict of interest to declare.
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Approval of the research protocol by an Institutional Reviewer Board: The Institutional Review Board of Yokohama City University Medical Center and affiliated institutions approved this study, and the study procedure complied with the principles of the Declaration of Helsinki.
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12185_2023_3700_MOESM1_ESM.docx
Figure S1. Central nervous system (CNS) prophylaxis protocol. Table S1. Prophylaxis-related toxicity Grade 3 or 4. Supplementary file1 (DOCX 33 KB)
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Akimoto, M., Miyazaki, T., Takahashi, H. et al. Comparison of standardized prophylactic high-dose and intrathecal methotrexate for DLBCL with a high risk of CNS relapse. Int J Hematol 119, 164–172 (2024). https://doi.org/10.1007/s12185-023-03700-0
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DOI: https://doi.org/10.1007/s12185-023-03700-0