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Ishida H, Imamura T, Tatebe Y, Ishihara T, Sakaguchi K, Suenobu S, Sato A, Hashii Y, Deguchi T, Takahashi Y, Hasegawa D, Miyamura T, Iguchi A, Kato K, Saito-Moriya A, Hara J, Horibe K. Impact of asparaginase discontinuation on outcomes of children with acute lymphoblastic leukaemia receiving the Japan Association of Childhood Leukaemia Study ALL-02 protocol. Br J Haematol 2023. [PMID: 36891758 DOI: 10.1111/bjh.18745] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/10/2023]
Abstract
Asparaginase is an essential drug for acute lymphoblastic leukaemia (ALL) treatment, but has several side effects, and its discontinuation often compromises patient outcomes. In the prospective Japan Association of Childhood Leukaemia Study ALL-02 protocol, two major changes were made: (1) additional chemotherapies to compensate for the reduction of treatment intensity when asparaginase was discontinued and (2) more intensive concomitant corticosteroid administration, relative to our previous ALL-97 protocol. In ALL-02 study, 1192 patients were included and L-asparaginase was discontinued for 88 (7.4%). Discontinuation due to allergy was markedly decreased relative to the ALL-97 protocol (2.3% vs 15.4%). Event-free survival (EFS) among patients with T-ALL was compromised when L-asparaginase was discontinued, as well as among patients with high-risk B-cell ALL, especially when discontinued before maintenance therapy. Moreover, multivariate analysis identified discontinuation of L-asparaginase as an independent poor prognostic factor for EFS. In the current study, additional chemotherapies failed to fully compensate for L-asparaginase discontinuation, illustrating the difficulty of replacing asparaginase with other classes of drugs, although this study was not designed to evaluate the effect of these modifications. Concomitant intensive corticosteroid treatment may help to reduce allergy to asparaginase. These results will assist in further optimization of asparaginase use.
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Affiliation(s)
- Hisashi Ishida
- Department of Pediatrics, Okayama University Hospital, Okayama, Japan
| | - Toshihiko Imamura
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Yasuhisa Tatebe
- Department of Pharmacy, Okayama University Hospital, Okayama, Japan
| | - Takashi Ishihara
- Department of Pediatrics, Nara Medical University, Kashihara, Japan
| | - Kimiyoshi Sakaguchi
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Souichi Suenobu
- Division of General Pediatrics and Emergency Medicine, Oita University Faculty of Medicine, Yufu, Japan
| | - Atsushi Sato
- Department of Hematology/Oncology, Miyagi Children's Hospital, Sendai, Japan
| | - Yoshiko Hashii
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takao Deguchi
- Department of Pediatrics, Mie University, Tsu, Japan
| | - Yoshihiro Takahashi
- Department of Pediatrics, Aomori Prefectural Central Hospital, Aomori, Japan
| | - Daiichiro Hasegawa
- Department of Hematology/Oncology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
| | - Takako Miyamura
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Akihiro Iguchi
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Koji Kato
- Department of Hematology Oncology, Children's Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - Akiko Saito-Moriya
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Junichi Hara
- Department of Pediatric Hematology/Oncology, Osaka City General Hospital, Osaka, Japan
| | - Keizo Horibe
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
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