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Imahashi N, Kurita N, Konuma T, Takahashi S, Nishida T, Tanaka M, Nakamae H, Kawakita T, Ota S, Doki N, Onishi Y, Sawa M, Ozeki K, Hiramoto N, Onizuka M, Ishimaru F, Ichinohe T, Atsuta Y, Kanda J. Effect of Conditioning Regimens and Graft-versus-Host Disease Prophylaxis on the Outcomes of Umbilical Cord Blood Transplantation Performed with Cyclophosphamide/Total Body Irradiation-Based Regimens. Transplant Cell Ther 2024; 30:318.e1-318.e11. [PMID: 38081416 DOI: 10.1016/j.jtct.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/20/2023] [Accepted: 12/06/2023] [Indexed: 01/08/2024]
Abstract
Umbilical cord blood (UCB) is a valuable alternative donor source for allogeneic hematopoietic stem cell transplantation. Various conditioning regimens and graft-versus-host disease (GVHD) prophylaxis regimens aimed at improving the outcomes of umbilical cord blood transplantation (UCBT) have been explored; however, the differences in their effects remain unclear. This study was conducted to elucidate the differences in the effects of conditioning and GVHD prophylaxis regimens on UCBT outcomes by disease type in a nationwide, retrospective study. We retrospectively analyzed the effects of conditioning and GVHD prophylaxis regimens on the outcomes of UCBT performed with cyclophosphamide (Cy)/total body irradiation (TBI)-based regimens in patients with acute myeloid leukemia (AML; n = 1126), acute lymphoblastic leukemia (ALL; n = 620), myelodysplastic syndrome (MDS; n = 170), and lymphoma (n = 128). Multivariate analysis for overall survival (OS) demonstrated the benefit of adding high-dose cytarabine to the Cy/TBI regimen for the AML group (relative risk [RR], .76; P = .003) and lymphoma group (RR, .54; P = .02), but not for the ALL and MDS groups. In the ALL group, adding etoposide to the Cy/TBI regimen was associated with a lower OS (RR, 1.45; P = .03). For GVHD prophylaxis, a tacrolimus/methotrexate regimen was associated with a lower OS compared with a cyclosporine/methotrexate regimen in the AML group (RR, 1.26; P = .01); this difference was not observed in the other groups. These differences in OS according to the conditioning and GVHD prophylaxis regimen were attributable mainly to differences in relapse risk. Our data show that the effects of conditioning regimens and GVHD prophylaxis on UCBT outcomes differed according to disease type. UCBT outcomes could be improved by selecting optimal conditioning regimens and GVHD prophylaxis for each disease type.
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Affiliation(s)
- Nobuhiko Imahashi
- Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan.
| | - Naoki Kurita
- Department of Hematology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Takaaki Konuma
- Department of Hematology/Oncology, the Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Satoshi Takahashi
- Department of Hematology/Oncology, the Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Tetsuya Nishida
- Department of Hematology, Japanese Red Cross Aichi Medical Center Nagoya Daiichi Hospital, Nagoya, Japan
| | - Masatsugu Tanaka
- Department of Hematology, Kanagawa Cancer Center, Yokohama, Japan
| | - Hirohisa Nakamae
- Department of Hematology, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Toshiro Kawakita
- Department of Hematology, National Hospital Organization Kumamoto Medical Center, Kumamoto, Japan
| | - Shuichi Ota
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - Noriko Doki
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
| | - Yasushi Onishi
- Department of Hematology, Tohoku University Hospital, Sendai, Japan
| | - Masashi Sawa
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - Kazutaka Ozeki
- Department of Hematology and Oncology, Konan Kosei Hospital, Konan, Japan
| | - Nobuhiro Hiramoto
- Department of Hematology, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Makoto Onizuka
- Department of Hematology/Oncology, Tokai University School of Medicine, Isehara, Japan
| | - Fumihiko Ishimaru
- Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan
| | - Tatsuo Ichinohe
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Yoshiko Atsuta
- Japanese Data Center for Hematopoietic Cell Transplantation, Nagakute, Japan; Department of Registry Science for Transplant and Cellular Therapy, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Junya Kanda
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Imamura M. Medium-dose etoposide, cyclophosphamide and total body irradiation conditioning potentiates anti-leukemia immunity in adults with acute lymphoblastic leukemia without aggravating graft-versus-host disease. Cytotherapy 2023; 25:1251-1258. [PMID: 37665303 DOI: 10.1016/j.jcyt.2023.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 07/18/2023] [Accepted: 07/27/2023] [Indexed: 09/05/2023]
Abstract
Medium-dose etoposide (ETP), cyclophosphamide (CY) and total body irradiation (TBI) is a beneficial conditioning regimen for allogeneic hematopoietic cell transplantation (allo-HCT) in adults with acute lymphoblastic leukemia (ALL), especially with high-risk ALL, as compared with CY and TBI conditioning. ETP may enhance immunogenicity of leukemia-associated antigens through increased expression of major histocompatibility antigen complex class I, leading to cross-priming of T cells by dendritic cells and generating leukemia-specific cytotoxic T cells. Furthermore, ETP can eliminate activated effector T cells, sparing naïve and memory T cells, accompanied with depletion of regulatory T cells. These mechanisms are supposed to lead to inhibit immune escape of leukemia cells and enhance anti-leukemia immunity in addition to direct cytotoxicity of ETP, followed by an efficient eradication of leukemia cells. According to the findings of pharmacokinetics studies, spreading the administration of low-dose ETP may be more efficacious than non-spreading administration, to induce a potent anti-leukemia immunity without aggravating graft-versus-host disease and transplant-related toxicity. In the present review, I discuss the immunological aspects elicited by the addition of medium-dose ETP to the CY/TBI conditioning and the possible positioning of allo-HCT with this conditioning in adults with ALL, considering recent progress in non-HCT treatment including bispecific antibody-based therapy.
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Affiliation(s)
- Masahiro Imamura
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan.
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