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Inotuzumab ozogamicin in infants and young children with relapsed or refractory acute lymphoblastic leukaemia: a case series

E. Brivio, C. Chantrain, T. Gruber, A. Thano, F. Rialland, A. Contet, S. Elitzur, L. Dalla-Pozza et al.

British Journal of Haematology, 2021

9 participants · 22 citations

Abstract

No data on inotuzumab ozogamicin (InO) in infant acute lymphoblastic leukaemia (ALL) have been published to date. We collected data internationally on infants/young children (<3 years) with ALL treated with InO. Fifteen patients (median 4.4 months at diagnosis) received InO due to relapsed or refractory (R/R) disease. Median percentage of CD22+ blasts was 72% (range 40–100%, n = 9). The median dose in the first course was 1.74 mg/m2 (fractionated). Seven patients (47%) achieved complete remission; one additional minimal residual disease (MRD)‐positive patient became MRD‐negative. Six‐month overall survival was 47% (95% confidence interval [CI] 27–80%). Two patients developed veno‐occlusive disease after transplant. Further evaluation of InO in this subgroup of ALL is justified.

How strong is the evidence?

Evidence Hub reads this as a case series, done in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health. Reported size: 9 participants or records.

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