NCT06211452

Comparison of Consolidation Strategies for Pediatric Patients With Acute Myeloid Leukemia

Comparison of Consolidation Strategies for Pediatric Patients With Acute Myeloid Leukemia - Results of the Randomized GATLA 8-LMA-P'07 Trial

• Status: Completed
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 258 (actual)
• Sponsor: Grupo Argentino de Tratamiento de la Leucemia Aguda · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

GATLA 8-AML´07 trial is an multicenter phase III dose-optimization trial for the treatment of acute myeloid leukemias in children and adolescents. Patients are treated with a combination of intensive chemotherapy in combination with intrathecal-injection by CNS and haematopoietic stem cell transplantation. The patients are stratified in a standard-group (SR) and a high risk-group (HR). SR was defined as FAB (French-American-British) M1/M2 with Auer rods; FAB M4eo or favorable cytogenetics \[t(8;21)/AML1-ETO or inv(16) or t(16;16) and/or CBFB/MYH11)\]; bone marrow blasts ≤5% on day 15. HR was defined as all others. SR patients were reclassified to the HR group if FLT3-ITD positive. Based on the experience of the BFM group, it was decided to randomly evaluate whether the six-drug conventional consolidation stage can be replaced with the use of a consolidation based by block therapy on drugs of proven efficacy in AML with the aim of reducing residual disease, and the toxicity of this stage. Patients are randomized once the double induction is completed into those who will receive the conventional consolidation phase and those who will receive consolidation with the combination of high doses cytarabine and two different anthracyclines sequentially.

Detailed description

All patients in the trial, whether standard risk (SR) or high risk (HR), receive 2 Induction courses: AIE and HAM and then are randomized to continue with the consolidation phase: a conventional consolidation (Arm A) with 6 drugs vs 2 blocks of chemotherapy that are incorporated in this protocol (AI and haM) (Arm B) and then an Intensification phase with high doses of cytarabine and etoposide. The difference between the SR and AR groups is that the former don't continue with the maintenance phase, while those in HR receive 1 year of Maintenance if they don't have a histoidentical family donor. SR patients according to cytogenetics and with \< 5% blasts in the bone marrow on day 15, haven´t indication for TCHP in 1st CR. HR patients, with a histoidentical family donor, will be transplanted in the 1st. CR after the Consolidation phases or the AI and haM blocks, according to the treatment arm that corresponded to them by randomization

Conditions

• AML
• Pediatric AML

Interventions

Type	Name	Description
DRUG	ARM A: Active Comparator Drug	Consolidation 6-thioguanine 60 mg/m2/d, 1 to 43 po; prednisone 40 mg/m2/d, on days 1-28 orally; vincristine 1.5 mg/m2/d, days 1, 8, 15, 22; idarubicin 7 mg/m2/d, on days 1, 8, 15, 22; cytarabine 75 mg/m2/d, on days 3-6, 10-13, 17-20, 24-27, 31-34, 38-41; intrathecal cytarabine on days 1, 15, 29, 43; cyclophosphamide 500 mg/m2/d, days 29, 43.
DRUG	ARM B: Blocks Therapy Drug	Blocks AI Cytarabine 500 mg/m2 as 24 infusion infusion x 4 d; Idarubicin 7 mg/m2 on days 3 and 5; Intrathecal cytarabine on days 0 and 6. haM Cytarabine 1 g/m2 every 12 hours for 3 days; Mitoxantrone 10 mg/m2 days 4 and 5; Intrathecal cytarabine days 6 and 15.

Timeline

• Start date: 2007-08-01
• Primary completion: 2015-03-15
• Completion: 2015-12-21
• First posted: 2024-01-18
• Last updated: 2024-01-18