Related Experiment Video
Updated: Feb 11, 2026

Murine Model of Leukemia Relapse to Induction Chemotherapy for Acute Lymphoblastic Leukemia
Published on: October 17, 2025
An effective modestly intensive re-induction regimen with bortezomib in relapsed or refractory paediatric acute
Gertjan J L Kaspers1,2, Denise Niewerth1, Bram A J Wilhelm3
1Department of Paediatric Oncology/Haematology, VU University Medical Centre, Amsterdam, the Netherlands.
Abstract:
This trial explored the efficacy of re-induction chemotherapy including bortezomib in paediatric relapsed/refractory acute lymphoblastic leukaemia. Patients were randomized 1:1 to bortezomib (1.3 mg/m2 /dose) administered early or late to a dexamethasone and vincristine backbone. Both groups did not differ regarding peripheral blast count on day 8, the primary endpoint. After cycle 1, 8 of 25 (32%) patients achieved complete remission with incomplete blood count recovery, 7 (28%) a partial remission and 10 had treatment failure. Most common grade 3-4 toxicities were febrile neutropenia (31%) and pain (17%). Bortezomib was safely combined with vincristine. Bortezomib rarely penetrated the cerebrospinal fluid.
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