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Effect of Blinatumomab vs Chemotherapy on Event-Free Survival Among Children With High-risk First-Relapse B-Cell Acute Lymphoblastic Leukemia: A Randomized Clinical Trial
F. Locatelli, G. Zugmaier, C. Rizzari, JD. Morris, B. Gruhn, T. Klingebiel, R. Parasole, C. Linderkamp, C. Flotho, A. Petit, C. Micalizzi, N. Mergen, A. Mohammad, WN. Kormany, C. Eckert, A. Möricke, M. Sartor, O. Hrusak, C. Peters, V. Saha, L....
Jazyk angličtina Země Spojené státy americké
Typ dokumentu klinické zkoušky, fáze III, srovnávací studie, časopisecké články, multicentrická studie, randomizované kontrolované studie, práce podpořená grantem
Medline Complete (EBSCOhost) od 1998-01-07 do Před 1 měsícem
Odkazy
PubMed
33651091
DOI
10.1001/jama.2021.0987
Knihovny.cz E-zdroje
- MeSH
- akutní lymfatická leukemie farmakoterapie mortalita terapie MeSH
- antitumorózní látky škodlivé účinky terapeutické užití MeSH
- chemoterapie konsolidační škodlivé účinky MeSH
- dítě MeSH
- imunoterapie * MeSH
- Kaplanův-Meierův odhad MeSH
- kojenec MeSH
- kombinovaná terapie MeSH
- leukemie B-buněčná farmakoterapie mortalita MeSH
- lidé MeSH
- míra přežití MeSH
- mladiství MeSH
- následné studie MeSH
- předškolní dítě MeSH
- přežití po terapii bez příznaků nemoci MeSH
- protilátky bispecifické škodlivé účinky terapeutické užití MeSH
- protokoly antitumorózní kombinované chemoterapie terapeutické užití MeSH
- recidiva MeSH
- rizikové faktory MeSH
- transplantace hematopoetických kmenových buněk * MeSH
- Check Tag
- dítě MeSH
- kojenec MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky, fáze III MeSH
- multicentrická studie MeSH
- práce podpořená grantem MeSH
- randomizované kontrolované studie MeSH
- srovnávací studie MeSH
Importance: Blinatumomab is a CD3/CD19-directed bispecific T-cell engager molecule with efficacy in children with relapsed or refractory B-cell acute lymphoblastic leukemia (B-ALL). Objective: To evaluate event-free survival in children with high-risk first-relapse B-ALL after a third consolidation course with blinatumomab vs consolidation chemotherapy before allogeneic hematopoietic stem cell transplant. Design, Setting, and Participants: In this randomized phase 3 clinical trial, patients were enrolled November 2015 to July 2019 (data cutoff, July 17, 2019). Investigators at 47 centers in 13 countries enrolled children older than 28 days and younger than 18 years with high-risk first-relapse B-ALL in morphologic complete remission (M1 marrow, <5% blasts) or with M2 marrow (blasts ≥5% and <25%) at randomization. Intervention: Patients were randomized to receive 1 cycle of blinatumomab (n = 54; 15 μg/m2/d for 4 weeks, continuous intravenous infusion) or chemotherapy (n = 54) for the third consolidation. Main Outcomes and Measures: The primary end point was event-free survival (events: relapse, death, second malignancy, or failure to achieve complete remission). The key secondary efficacy end point was overall survival. Other secondary end points included minimal residual disease remission and incidence of adverse events. Results: A total of 108 patients were randomized (median age, 5.0 years [interquartile range {IQR}, 4.0-10.5]; 51.9% girls; 97.2% M1 marrow) and all patients were included in the analysis. Enrollment was terminated early for benefit of blinatumomab in accordance with a prespecified stopping rule. After a median of 22.4 months of follow-up (IQR, 8.1-34.2), the incidence of events in the blinatumomab vs consolidation chemotherapy groups was 31% vs 57% (log-rank P < .001; hazard ratio [HR], 0.33 [95% CI, 0.18-0.61]). Deaths occurred in 8 patients (14.8%) in the blinatumomab group and 16 (29.6%) in the consolidation chemotherapy group. The overall survival HR was 0.43 (95% CI, 0.18-1.01). Minimal residual disease remission was observed in more patients in the blinatumomab vs consolidation chemotherapy group (90% [44/49] vs 54% [26/48]; difference, 35.6% [95% CI, 15.6%-52.5%]). No fatal adverse events were reported. In the blinatumomab vs consolidation chemotherapy group, the incidence of serious adverse events was 24.1% vs 43.1%, respectively, and the incidence of adverse events greater than or equal to grade 3 was 57.4% vs 82.4%. Adverse events leading to treatment discontinuation were reported in 2 patients in the blinatumomab group. Conclusions and Relevance: Among children with high-risk first-relapse B-ALL, treatment with 1 cycle of blinatumomab compared with standard intensive multidrug chemotherapy before allogeneic hematopoietic stem cell transplant resulted in an improved event-free survival at a median of 22.4 months of follow-up. Trial Registration: ClinicalTrials.gov Identifier: NCT02393859.
Amgen Inc Thousand Oaks California
Amgen Ltd Uxbridge United Kingdom
Azienda Ospedaliera di Rilievo Nazionale Santobono Pausilipon Naples Italy
Charité Universitätsmedizin Berlin Berlin Germany
Charles University Motol University Hospital Prague Czech Republic
IRCCS Istituto Giannina Gaslini Genova Italy
IRCCS Ospedale Pediatrico Bambino Gesù and Sapienza University of Rome Rome Italy
Jena University Hospital Jena Germany
Medizinische Hochschule Hannover Hannover Germany
Sorbonne Université Hôpital Armand Trousseau AP HP Paris France
St Anna Children's Hospital Vienna Austria
Tata Translational Cancer Research Center Tata Medical Center Kolkata West Bengal India
The University of Manchester Manchester United Kingdom
Universitätsklinikum Frankfurt am Main Frankfurt Germany
Universitätsklinikum Freiburg Freiburg Germany
Universitätsklinikum Schleswig Holstein Kiel Germany
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- $a Importance: Blinatumomab is a CD3/CD19-directed bispecific T-cell engager molecule with efficacy in children with relapsed or refractory B-cell acute lymphoblastic leukemia (B-ALL). Objective: To evaluate event-free survival in children with high-risk first-relapse B-ALL after a third consolidation course with blinatumomab vs consolidation chemotherapy before allogeneic hematopoietic stem cell transplant. Design, Setting, and Participants: In this randomized phase 3 clinical trial, patients were enrolled November 2015 to July 2019 (data cutoff, July 17, 2019). Investigators at 47 centers in 13 countries enrolled children older than 28 days and younger than 18 years with high-risk first-relapse B-ALL in morphologic complete remission (M1 marrow, <5% blasts) or with M2 marrow (blasts ≥5% and <25%) at randomization. Intervention: Patients were randomized to receive 1 cycle of blinatumomab (n = 54; 15 μg/m2/d for 4 weeks, continuous intravenous infusion) or chemotherapy (n = 54) for the third consolidation. Main Outcomes and Measures: The primary end point was event-free survival (events: relapse, death, second malignancy, or failure to achieve complete remission). The key secondary efficacy end point was overall survival. Other secondary end points included minimal residual disease remission and incidence of adverse events. Results: A total of 108 patients were randomized (median age, 5.0 years [interquartile range {IQR}, 4.0-10.5]; 51.9% girls; 97.2% M1 marrow) and all patients were included in the analysis. Enrollment was terminated early for benefit of blinatumomab in accordance with a prespecified stopping rule. After a median of 22.4 months of follow-up (IQR, 8.1-34.2), the incidence of events in the blinatumomab vs consolidation chemotherapy groups was 31% vs 57% (log-rank P < .001; hazard ratio [HR], 0.33 [95% CI, 0.18-0.61]). Deaths occurred in 8 patients (14.8%) in the blinatumomab group and 16 (29.6%) in the consolidation chemotherapy group. The overall survival HR was 0.43 (95% CI, 0.18-1.01). Minimal residual disease remission was observed in more patients in the blinatumomab vs consolidation chemotherapy group (90% [44/49] vs 54% [26/48]; difference, 35.6% [95% CI, 15.6%-52.5%]). No fatal adverse events were reported. In the blinatumomab vs consolidation chemotherapy group, the incidence of serious adverse events was 24.1% vs 43.1%, respectively, and the incidence of adverse events greater than or equal to grade 3 was 57.4% vs 82.4%. Adverse events leading to treatment discontinuation were reported in 2 patients in the blinatumomab group. Conclusions and Relevance: Among children with high-risk first-relapse B-ALL, treatment with 1 cycle of blinatumomab compared with standard intensive multidrug chemotherapy before allogeneic hematopoietic stem cell transplant resulted in an improved event-free survival at a median of 22.4 months of follow-up. Trial Registration: ClinicalTrials.gov Identifier: NCT02393859.
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